International Seminar on Soil Erosion and Riverine Sediment in Mountainous Regions
International famous soil erosion and river sediment research experts from Asia, Europe, the America and other regions will be invited to give main reports and panel discussion on this seminar. The climate changing impact, new trends, new progress and new problems of the soil erosion and river sediment in mountainous regions will be discussed, and new countermeasures against the influence of climate change will be discussed also.
Soil erosion and river sediment research belongs to natural sciences. Soil erosion is one of the most widely distributed environmental problems in the world, which poses a great threat to world food security and ecological environment. With the global climate change, the development and evolution process of soil erosion types, intensity and influencing factors in alpine regions have also changed greatly, which affects the sediment transport in alpine regions and its downstream rivers and the design and operation of water conservancy and hydropower projects.
Discussion on the progress and new countermeasures against the influence of climate change (SDGs 13) on soil erosion and river sediment in alpine regions not only accords with the important direction of international soil erosion basic research, but also meets urgent demand of water resource security (SDGs 6) in mountainous areas.
Soil erosion and river sediment research has always been a basic scientific issue of global concern. Soil erosion and river sediment in alpine regions have strong response to climate change, and have great influence on the local ecological environment, sediment transport of downstream rivers and design and operation of water conservancy and hydropower projects, which has become a new hot issue for scientists all over the world.
This activity will strengthen the communication between the soil erosion and river sediment scientists worldwide, promote global cooperation among scientists, governments and enterprises, popularize the UNESCO and SDGs, and add with new perspectives from soil erosion and river sediment in mountainous regions to the relevant SDGs.
- Study on the history and rate of gully erosion in typical small watershed of black soil region based on UAV remote sensing and 137Cs tracer
Oradores:Yanru Wen - Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences
- Simulation and estimation of natural runoff in China
Oradores:Chiyuan Miao - Beijing Normal University
- A little experience of national fund application
Oradores:Guanghui Zhang - Beijing Normal University
- Da Dao Zhi Jian - CCHZ-DISO Big Data and Model evaluation System
Oradores:Zengyun Hu - XinJiang Institute of Ecology and Geography Chinese Academy of Sciences
- Multi-scale hydrological process monitoring and eco-hydrological simulation in Qilian Mountains
Oradores:Baoqing Zhang - Lanzhou University
- Long-term response of runoff and sediment load to spatiotemporally varied rainfall in the Lhasa River basin, Tibetan Plateau
- Fluvial runoff and sediment play vital roles in channel evolution, material cycling, water resource utilization and ecological environment. In the context of global climate change, the assessment of runoff and sediment in response to climate change is of great signiﬁcance for water and soil conservation, especially in alpine regions such as the Tibetan Plateau with limited availability of long-term observed data. In this study, based on the available records for the period 1980–2018, the spatiotemporal variations in rainfall-related parameters (rainfall and rainfall erosivity (RE)), and their impacts on the runoff–sediment load (SL) process were investigated in the Lhasa River Basin (LRB) by cross-coherence analysis. In addition, the individual and combined effects of other regional environmental factors (e.g., temperature, snow water equivalent (SWE) and vegetation) on runoff and SL were quantitatively identiﬁed using partial least squares structural equation modeling (PLS-SEM). The results showed that the changes in rainfall-related parameters experienced an upward trend at a rate of 3.59 mm/decade (rainfall amount) and 46.05 MJ⋅mm⋅ha-1⋅h-1/decade (RE), respectively. The regions with the most obvious increase occurred in downstream of LRB. However, runoff displayed an insigniﬁcant decreasing trend, together with increasing water inputs from the wetter climate in the middle and lower reaches. The contrasting SL trends were found in the middle (signiﬁcantly descending: 5.5 × 104 t/decade) and downstream reaches (slightly increasing: 19.27 × 104 t/decade). Rainfall-related parameters generally played a positive role in runoff and SL at all hydrological stations, and their action gradually weakened after 2005 despite still being the dominant factor. Other environmental variables, such as vegetation, did not limit runoff but did reduce the SL with an increase in vegetation coverage in the LRB, where large-area vegetation restoration projects were implemented and mainly distributed on the sandy land and ﬂoodplain.
Oradores:Donghong Xiong-Institute of Mountain Hazard and Environment-CAS
- Water stress of Asia's water tower
- Water resources sustainability in High Mountain Asia (HMA) surrounding the Tibetan Plateau (TP)—known as Asia’s water tower—has triggered widespread concerns because HMA protects millions of people against water stress. However, the mechanisms behind the heterogeneous trends observed in terrestrial water storage (TWS) over the TP remain poorly understood. Here we use a Lagrangian particle dispersion model and satellite observations to attribute about 1 Gt of monthly TWS decline in the southern TP during 2003–2016 to westerlies-carried deficit in precipitation minus evaporation (PME) from the southeast North Atlantic. We further show that HMA blocks the propagation of PME deficit into the central TP, causing a monthly TWS increase by about 0.5 Gt. Furthermore, warming-induced snow and glacial melt as well as drying-induced TWS depletion in HMA weaken the blocking of HMA’s mountains, causing persistent northward expansion of the TP’s TWS deficit since 2009. Future projections under two emissions scenarios verified by satellite observations during 2020–2021 indicate that, by the end of the twenty-first century, up to 84% (for scenario SSP245) and 97% (for scenario SSP585) of the TP could be afflicted by TWS deficits. Our findings indicate a trajectory towards unsustainable.
Oradores:Qiang Zhang - Beijing Normal University
- Frontier problems and progress of ecological hydrology in cold regions
- Understanding and quantitative simulation of eco-hydrological processes and driving mechanisms in cold regions is the key to systematically solve many ecological and environmental problems faced by cold regions under the synergetic effect of climate change and cryosphere change. This report focuses on the international frontier scientific issues such as SPAC hydro-thermal coupling transfer process in cold regions, key processes of water cycle in permafrost-ecological coupling, runoff formation mechanism and simulation in permafrost basins, and carbon transport process and attribution in permafrost basins. It systematically introduces the major advances in these three aspects, and reviews the frontier challenges of existing theories and methods and their future development directions.
Oradores:Genxu Wang - Institute of Mountain Hazard and Environment - CAS
- The profound effects of extreme events on surface processes
- Under the circumstance of global change and active tectonic activity, the social and environmental effects of extreme emergencies (including rainstorm, flood, typhoon, earthquake, etc.) have been widely concerned. These extreme events may increase the flux of surface material transport and geochemical processes by several times or even orders of magnitude,However, little is known about terrestrial surface geochemical processes, flux changes, and their mechanisms for these types of events.The report presents the assessment of the impact of extreme events such as rainstorms and earthquakes on superbiogeochemical processes in recent years, and evaluates the intensity, magnitude and duration of the impact of high-intensity events on the basin's denudation-weathering and carbon budget.
Oradores:Zhangdong Jin - Institute of Earth Environment - CAS
- - 10:00 - 11:00
- Glacier melt and element transport
- With the continuous global warming,glaciers will melt faster, physical erosion and chemical weathering will increase, and the production of water, sediment and chemical elements will increase. These elements are likely to affect the aquatic ecosystem after entering the downstream, which may eventually affect the carbon cycle and feed back to the climate system. The authors carried out systematic studies on chemical weathering and bioavailable element production and transport processes that are closely related to glacier ablation. They evaluated the soluble iron release rate/yield of global glaciers, revised the soluble organic carbon release rate/yield of global glaciers, and found conclusive evidence of the increase of chemical weathering rate in global glacier basins.
Oradores:Xiangying Li - College of Urban and Environmental Science - Northwest University
- - 14:00 - 15:00
- Study on the mechanism of short-term abrupt change and long-term evolution of permafrost water and heat migration and its hydrological response
- Climate change and human activities have intensified the degradation of permafrost in the source areas of the Tibetan Plateau leading to more significant spatiotemporal variations in hydrological and physical processes and water resources in the basin, posing a serious threat to the sustainable development of the socio-economic and ecological environment.The report will focus on the impact of multi time scale variation of precipitation under climate change on the water and heat transport in the active layer of permafrost. In response to the issue of the short-term sudden change and long-term evolution mechanism of water and heat transport in in permafrost and their hydrological responses,scientific issues such as the research methods for the evolution process and trend of precipitation event characteristics under climate change, enhanced monitoring schemes for water and heat transport in permafrost based on different precipitation conditions,short-term sudden change and long-term evolution characteristics of water and heat transport in permafrost, and hydrological process responses in typical permafrost regions are discussed.
Oradores:Peng Jiang - College of Hohai University College of Hydrology and Water Resources
- - 16:00-18:00
- Nutritional Adaptation and Ecological Management of Grassland in High Mountain areas
- Grassland is the main ecological type in theTibetan Plateau, and its fragile characteristics are sensitive to changes in the environment. The report aims to clarify the enhanced intensity and frequency of freezing/thawing leading to changes in soil water/ice phase transition and nutrient supply behavior, reveal the relationship between root configuration efficiency and plant functional traits in the freezing/thawing region, and explore the adaptation mechanism of plants from a new perspective of root nutrient absorption preferences. A carbon sink measurement method based on flux analysis, controlled experiments, and mechanism models has been developed for high mountain areas, and a management path for grasslands in theTibetan Plateau based on the dual carbon background has been proposed.
- - 14:00-16:00
- Observation and simulation of blowing snow process in High Mountain areas
- The blowing snow process significantly affects the spatial and temporal distribution of snow and surface radiation income and expenditure in mountainous areas, and is an important hydrological process of snow accumulation in alpine mountains. However, the existing land surface models do not consider the influence of blowing snow processes, and there are significant biases in the simulation of the spatial and temporal distribution characteristics of snow accumulation in the plateau region in the land surface model. This report will introduce the development of the coupled blowing snow-land surface model and the progress of the evaluation and development of wind-blown snow occurrence scenarios in the context of the simulation status of the surface energy-moisture process and the problems of the simulation of the spatial and temporal distribution characteristics of snow accumulation in the plateau region of the Tibetan plateau by the land surface process model CLM4.5.
Oradores:Yunpeng Xie - Institute of Tibetan Plateau Research - CAS
- - 15:30 - 18:30
- Effects of hydrological connectivity on sediment production and carbon transport by erosion in a watershed
- Runoff is an important carrier of sediment transport, and its smoothness, i.e. hydrological connectivity, determines whether sediment can be exported from its source. Studying the impact of hydrological connectivity on the erosion and sediment production process in a watershed is a key scientific issue in understanding the erosion and sediment production process and mechanism of the watershed as a whole. This study applies methods such as graph theory and scenario simulation to quantitatively characterize the connectivity of watershed structure and elucidate the impact of human activities on the connectivity of watershed structure; Based on this, a functional connectivity index based on soil moisture was established, and the key influencing factors of hydrological functional connectivity in the watershed and their rainfall thresholds were determined; By coupling the functional connectivity index and MUSLE, a rainfall event scale watershed erosion and sediment yield model was constructed, revealing the spatiotemporal correlation between watershed hydrological connectivity and sediment source and sink distribution; In addition, the response of soluble carbon output patterns in watersheds to hydrological connectivity was studied, clarifying the main driving forces of soluble carbon migration in watersheds during rainfall processes.
- Multidynamic composite erosion mechanism and key ecological governance technologies in the Yellow River arsenic sandstone area
- The arsenic sandstone area in the Yellow River Basin is known as the "ecological cancer of the Earth". This area is the core source of coarse sediment in the Yellow River and plays a very important role in the national strategy for ecological protection in the Yellow River Basin. In response to the practical problems of severe composite erosion and ecological governance in the arsenic sandstone area, the spatial interaction characteristics of hydraulic, wind, and freeze-thaw composite erosion in the area were elucidated through multiple methods such as typical sampling survey, remote sensing interpretation statistics, field in-situ observation, physical model testing and demonstration verification. The breakthrough was made in the multi dynamic composite erosion in-situ observation dissociation test method and erosion physical model similarity simulation technology, We have innovated the ecological comprehensive governance model and new technologies in the arsenic sandstone area, elucidated the application effects of typical watershed governance technologies, and looked forward to the development direction of ecological governance theory and technology research in the arsenic sandstone area, providing technological support for ecological protection and governance in vulnerable areas.
- - 14:00 -16:00
- Changes of lake light environment and its driving mechanism
- The main contents of the report include the construction of satellite remote sensing inversion models of underwater light environment such as diffuse attenuation coefficient and transparency, the spatio-temporal change pattern of underwater light environment of lakes in China and even the world, and the driving mechanism of climate change and human activities on the underwater light environment of lakes.
Oradores:Kun Shi - Nanjing Institute of Geography and Limnology - Chinese Academy of Sciences
- - 14:00-16:00
- Permafrost accounts for about 20% of the land area in the Northern Hemisphere and is an important part of the cryosphere. However, due to its deep burial depth, direct surface observation is often difficult to obtain its response to climate change. Therefore, global models and the corresponding output products are important tools for permafrost research. ERA5-Land which was newly released by the European Centre for Medium-Range Weather Forecasts (ECMWF) is the first set of medium and high resolution reanalysis products in the world. This report mainly introduces the applicability of ERA5-Land to soil temperature in permafrost regions and the sources of model errors. By coupling the advanced multi-layer snow cover model to the HTESSEL land surface model, the reporter improved the simulation ability of energy exchange between the ground and atmosphere, thereby significantly improving the applicability of ERA5-Land in permafrost regions.
Oradores:Bin Cao - Institute of Tibetan Plateau Research - Chinese Academy of Sciences
- - 14:00-16:00
- Modeling Flow and Transport Processes in Cold Region Subsurface Environments: A Case Study in the Qilian Mountains
- Thermo-hydrologic (TH) processes in frozen soils are prominent for improving the mechanistic understanding of subsurface hydrology in cold regions, which are extremely sensitive to seasonal and climate change. Unfortunately, due to the harsh natural environment, it is difficult to obtain long-term and high-resolution datasets via field observations. Numerical modeling and simulation could serve as a powerful tool to improve a predictive understanding of the TH processes in frozen soils. In this talk, we present an in-house developed physically-based cryo-hydrogeological model for simulating TH processes in frozen soils, which was implemented into an open-source, massively-parallel computational fluid dynamics (CFD) software with a user-friendly interface. As validations, a series of benchmarking cases and laboratory freezing experiment were applied to validate the accuracy of the proposed model. The proposed model was then applied to simulate the TH processes in the frozen soils of a small catchment of the Qilian Mountain on the edge of the Qinghai-Tibet Plateau. The trends of the dynamic multiphase flow, ice-water phase transition and heat transfer in seasonally frozen soils were highly consistent with field observations. The effects of seasonal change, slope aspect and micro-topography on the TH processes were diagnosed. The proposed model and major findings of this research would provide scientific support for predicting changes in subsurface environments of cold regions.
Oradores:Xiaofan Yang - Faculty of Geographical Science - Beijing Normal University
- - 15:00-16:00
- The Regulation Mechanism of Dynamic Variation of Underlying Vegetation on Watershed Water Resources
- Climate and underlying surface changes have a significant impact on basin evapotranspiration. However, how to quantitatively decompose their contributions to evapotranspiration variation has always been the focus and difficulty of basin Hydrology research. Based on the basic principle of water and energy balance, a spatial coordinate system for water and energy allocation is established to separate and quantify the impact of climate and underlying surface changes on watershed evapotranspiration. Based on an optimized water energy allocation framework, an attribution study was conducted on the actual evapotranspiration changes in 83 typical watersheds worldwide (1900-2008). The results of this method were compared with those of the decomposition method based on the Budyko Fu formula, and the scientific applicability and applicability of this framework in large-scale watersheds worldwide were tested. Based on this, further discuss the regulatory mechanism of underlying vegetation variation on watershed or regional water resources.
Oradores:Zhiyong Liu - Sun Yat-sen University
- - 15:00-16:00
- Development and Equipment Fabrication of Soil Erosion Process Observation/Monitoring Technology
- In response to the challenges of observing soil erosion's evolution on surface morphology during rainfall and the bottlenecks of outdated monitoring technology, the study highlights the breakthroughs made by the Soil and Water Conservation Monitoring and Information Technology Team. Over the years, they have developed continuous measurement technology for underlying surface morphology during rainfall and automatic monitoring technology for runoff and sediment processes, surpassing the limitations of outdated instruments and equipment. Their efforts have significantly advanced the understanding of soil erosion processes and paved the way for more effective soil and water conservation practices.
Oradores:Minghang Guo - Institute of Soil and Water Conservation - Northwest A&F University
- - 15:00-16:00
- Improving Microbiological Risk Understanding in Natural and Engineered Environments for Enhanced Human Health Protection
- Microbial risks in natural and engineering environments are crucial for human health protection. However, these microbial risks are highly diverse, and the issues involved often become more complex due to the complexity of environmental conditions. This report will introduce the use of traditional microbiological methods and modern molecular and metagenomic tools to characterize and understand microbial risks in the environment. The natural environment includes water basins and coastal waters, while the engineering system includes wastewater, drinking water, and agricultural systems. We will also discuss how to use risk information to develop new strategies to strengthen human health protection.
Oradores:Tao Yan - University of Hawaii at Manoa
- - 14:00-16:00
- SALEACH: A New Web-based Soil Salinity Leaching Model for Improved Irrigation Management
- Leaching is essential in irrigated croplands where natural precipitation is insufficient to control salinity buildup. Several useful models exist for salinity management; however, leaching requirement (LR) calculations are based on steady-state approaches that only consider salinity tolerance of crops and irrigation water salinity to estimate the LR. In this study, a web-based soil salinity leaching management model (SALEACH) was developed as an online tool to assist growers for better and easier management of soil salinity to sustain agricultural production in irrigated croplands. SALEACH employs the traditional steady-state approach to estimate LRs but improves outputs by not only considering irrigation water salinity (ECiw) and salinity tolerance of specific crops (ECt), but also root water uptake patterns to account for irrigation system differences, and soil types for differences in hydraulic characteristics, as well as water stress and rainfall input.
Oradores:Laosheng Wu - University of California - Riverside
- - 15:00-17:00
- Soil erosion model and its key factor monitoring
- Soil erosion is one of the main global environmental problems, which restricts the coordinated development of society, economy, and environment. The soil erosion model is an important method for quantitatively predicting the degree of soil erosion and also an important tool for guiding soil and water conservation practices. This report will focus on the current development status of soil erosion models and monitoring technologies, focusing on explaining the principles and application cases of mainstream soil erosion models, and discussing the monitoring and optimization of key parameters of the models.
Oradores:Bin Wang - School of Soil and Water Conservation - Beijing Forestry University
- - 10:00 - 12:00
- SEIMS: a flexible and easy-to-use high-performance watershed modeling framework
- Watershed process simulation can map real watersheds to digital space for rehearsal of different decision-making schemes, and is an important means of watershed scientific management. Scientific management of watersheds requires accurate, fast, and easy-to-use simulation of watershed processes. Therefore, we have developed a flexible framework for watershed modeling, SEIMS, to achieve refinement of watershed process simulation; Propose efficient parallel computing methods that support real-time simulation of watershed processes; Build a network modeling platform supported by Big data to facilitate the use of river basin process simulation, thus effectively supporting refined river basin management.
Oradores:Junzhi Liu - Center for Pan-third Pole Environment - Lanzhou University
- Soil Environmental Effects of Vegetation Restoration
Oradores:Shaoshan An - Research Center of Water and Soil Conservation and Ecological Environment - CAS & MOE
- Terrestrial ecosystem Carbon cycle and Global change
Oradores:Jinshi Jian - Research Center of Water and Soil Conservation and Ecological Environment - CAS & MOE
- Study on Microplastics of water and soil environment in typical agricultural areas of qinghai province
Oradores:Yimei Huang - Research Center of Water and Soil Conservation and Ecological Environment - CAS & MOE
- The impact of seasonal freeze-thaw on soil erosion in the Loess Plateau
Oradores:Bo Ma - Research Center of Water and Soil Conservation and Ecological Environment - CAS & MOE
- Contribution characteristics and driving factors of microbial residues to soil organic carbon in different ecosystems
Oradores:Baorong Wang - Research Center of Water and Soil Conservation and Ecological Environment - CAS & MOE
- The Process and Main Control Factors of Runoff and Sediment Production in Frozen Soil Small Watersheds
Oradores:Xiaonan Shi - Institute of Tibetan Plateau Research - CAS
- Preliminary Study on Water Quality and Sediment in the Qinghai Tibet Plateau
Oradores:Chen Zeng - Institute of Tibetan Plateau Research - CAS
- Relationship between Water and Sediment and the Mechanism of Sediment Production in the Upper Reaches of the Heihe River
Oradores:Guanxing Wang - Institute of Tibetan Plateau Research - CAS
- The Response of Runoff and Sediment Processes to Climate Change in the Source Area of Rivers on the Tibet Plateau
Oradores:Li Wang - Institute of Tibetan Plateau Research - CAS
- Risk Analysis of Gully Erosion in High Cold Watershed and Tracing of River Sediment Sources
Oradores:Yang Zhao - Institute of Tibetan Plateau Research - CAS
- - 10:00-12:00
- Analysis of the dynamic changes and causes of surface water bodies in arid areas of Central Asia
- This study was based on the Google Earth Engine (GEE) cloud computing platform and utilized long-term Landsat data and water extraction algorithms to generate a high-precision, comprehensive, and 30 m spatial resolution dataset of surface water areas in Central Asia. An estimation model for lake water storage variations in Central Asia was developed, which analyzed the characteristics of lake water storage variations at multiple scales. By integrating climate and socio-economic data, the driving factors behind the changes in surface water bodies in Central Asia were analyzed.
- - 15:30-16:30
- Research on regional snow cover changes based on remote sensing, modeling, and reanalysis
- Snow has significant impacts on the water balance in China’s high-altitude areas and the agricultural water resources security in arid regions. Since 2016, we have conducted a series of studies focusing on the spatiotemporal patterns and driving mechanisms of snow cover changes in China, with an emphasis on monitoring and simulating snow cover variations and processes using a combination of observations, remote sensing, models, and reanalysis methods, considering the effects of complex terrain and climatic factors. Based on previous research, this report will summarize our latest progress in remote sensing extraction of snow phenological parameters and the identification of driving factors for regional snow phenological changes in China.
- - 16:30-17:30
- Research progress in ecological hydrology based on stable isotope technology
- This report mainly introduces the principles of stable isotope technology and the methods for the collection and determination of samples. It provides an overview of the main analytical methods based on stable isotope technology, and combines previously published articles to introduce specific applications of stable isotope methods. It also provides a prospect for future research content and directions.
- - 10:00 - 11:00
- Preliminary Research on Isotopic Ecology and Ecological Protection in the Ecological Barrier Zone of Qinghai-Tibet Plateau
- The report introduces the research background from the perspectives of the construction of the ecological barrier zone in the Qinghai-Tibet Plateau, the establishment of national parks in high-altitude mountainous areas, and the accelerated phase transition of water bodies. In order to address relevant scientific issues, the report provides a detailed description of the construction of the isotopic hydroecology observation network in the ecological barrier zone of the Qinghai-Tibet Plateau. Based on this, the preliminary research progress in isotopic hydroecology in the Qilian Mountains of China is elaborated, with a focus on the research achievements supporting the construction of the Qilian Mountains National Park and ecological conservation.
- - 11:00 - 12:00
- Environmental Processes and Historical Changes of Mercury in the Surface Interactions of the Qinghai-Tibet Plateau
- The presence, migration, transformation, and ecological and environmental impacts of mercury in the context of multi-sphere interactions have become a frontier research topic in environmental chemistry in the “Third Pole” region. This report provides a systematic review, reflection, and future prospects on the distribution and environmental behavior of mercury in glaciers and snow ice in the Qinghai-Tibet Plateau, the impacts of rapid cryosphere changes on the biogeochemical cycle of mercury, and the historical records of mercury pollution in various environmental media in the cryosphere region.
- Research on Heat Tracing Theory and Numerical Simulation of Underflow Zone
- Extensive water conservancy engineering has caused changes in water levels, water temperature, and flow velocity in upstream and downstream rivers and lakes, thus having a significant impact on the ecological environment of rivers and lakes. A deep understanding of the exchange process in the hyporheic zone (subsurface flow zone), has important implications for groundwater environmental protection, biodiversity and ecosystem services, and achieving the "dual carbon" goals. Thermal tracing methods, as a cost-effective, easy-to-use, and continuously monitorable natural tracing method, have been widely used to study the exchange patterns and quantify exchange rates in the hyporheic zone. In recent years, the rapid progress of computer numerical techniques and the continuous improvement of temperature sensors have opened up broader development opportunities for in-depth research on thermal tracing methods.
- Carbon storage and carbon sink potential of inland water bodies in China under global change
- The land-water-air carbon fluxes and carbon balance processes in terrestrial ecosystems play a crucial role in uncovering carbon "loss" processes in the land-atmosphere and land-ocean realms, as well as in the carbon neutrality of the Earth system. Therefore, bridging the regional land-water-air carbon fluxes and carbon balance processes between land and ocean is a critical process for carbon neutrality in the Earth system. Analyzing the coupling process of carbon exchange and transport in land-water-air systems, quantitatively evaluating carbon fluxes and carbon balance mechanisms, will provide important scientific evidence for a deeper understanding of the role of terrestrial ecosystems in carbon neutrality processes under global change.
- Preliminary Study on Water and Sediment Changes and Sediment Sources in Karst Watersheds
- This report covers six aspects: temporal variation characteristics and attribution analysis of water and sediment, spatial variation characteristics and main controlling factors of water and sediment, variation characteristics and influencing mechanisms of water-sediment relationship, annual distribution of water and sediment and decoupling of influencing factors, prediction of water and sediment in different time scales of the watershed, and inverse estimation of erosion and sediment yield as well as tracing of sediment sources. It decouples the contributions of climate and underlying surface changes to the water and sediment in karst basins; establishes a quantitative analysis method for the response of erosion and sediment yield in karst basins to environmental factors; elucidates the mechanism of rainfall-runoff-sediment lag in the watershed and reveals the constrained mechanism of sediment supply in the process of erosion and sediment yield in the watershed; optimizes the prediction model of erosion and sediment yield in karst basins, enhances the accuracy of streamflow and sediment yield prediction in karst basins; constructs a dating model applicable to karst depressions, inversely analyzes the changing patterns of soil erosion rate in the watershed over the past 70 years, and successfully applies compound fingerprint tracing to identify the sources of above-ground and underground sediment in the watershed.
- How to write a scientific Research paper
- Writing scientific papers is an important part of graduate education and serves as a primary means of showcasing research findings. Following the process of paper writing, it involves systematic and in-depth reporting and analysis on article structure, presentation of results, chart and table creation, methodology and materials, introduction to the paper, reference citation, essential elements of discussion, tone selection, concise titles, author determination, abstract composition, selection of keywords, and listing of references. The aim is to enhance the efficiency of graduate students and young researchers in scientific paper writing, as well as strengthen their ability to independently engage in scientific research.
- Reflection on the Construction of High Quality Silt Dams on the Loess Plateau
- This research focuses on the water and sediment changes in the Yellow River Basin and introduces the development process of silt check dams, as well as their mechanisms for regulating water and sediment. It elaborates on the role of silt check dams in rainwater regulation and storage, and proposes suggestions for the planning, construction, and operational management of silt check dams in the new era based on practical experiences.
Oradores:Peng Li - Xi’an University of Technology
- Research on the Impact Mechanism of Climate Change and Cascade Reservoir Regulation on the Runoff of the Lancang River
- Freshwater resources have always been a strategically scarce resource for economic and social development worldwide. The development and utilization of transboundary river water resources involve the essential interests of countries in the basin, and continually draw attention from the international community. Currently, the accuracy of runoff simulation studies based on single-target parameter calibration in the basin is often limited, leading to increased uncertainty in the simulation of runoff regulation by cascade reservoirs, making it difficult to quantitatively assess the impact of climate change and reservoir regulation on runoff. It is an urgent scientific problem for the academic community to conduct systematic and quantitative research on the dynamic changes of all cascade reservoirs based on hydrological and meteorological research methods, utilizing advanced technologies such as existing geospatial observations.
Oradores:Xingxing Zhang - Institute of Geographic Sciences and Natural Resources Research - Chinese Academy of Sciences
- The impacts of changes in hydrological processes on the transport and release of carbon in frozen soil
- The carbon storage in permafrost regions accounts for approximately 50% of the global soil carbon pool. Climate change has led to the degradation of permafrost and the release of large amounts of greenhouse gases into the atmosphere, further exacerbating global temperature rise and forming positive feedback on climate change. The degradation of permafrost affects carbon transport and release by altering hydrological processes. However, insufficient consideration is currently given to the degradation process of permafrost, including warming and rapid collapse, which limits the estimation of carbon release in permafrost. The report focuses on the degradation of permafrost, the carbon cycle of permafrost, and hydrological processes. It mainly elaborates on three aspects: how hydrological processes respond to permafrost degradation, how permafrost degradation affects carbon transport and release processes, and how it will affect the Arctic carbon cycle as a whole.
- Third Pole microbes under climate change
- Microbes are important life forms in the extreme environments of the Third Pole, mediating the cycling of crucial elements such as carbon, nitrogen, and sulfur. Conducting research around them can reveal the boundary conditions required for sustaining life and also hold implications for the exploration of extraterrestrial life. Additionally, the Third Pole is one of the regions most strongly affected by climate warming. The direct impact of climate warming leads to accelerated glacier melting and extensive exposure of bare soils at the glacier forefront. By understanding the influence of climate warming on microbes in glacier forefronts, we can deepen our understanding of the effects of climate change and provide a theoretical basis for the feedback between glacier ecosystems and climate change.
Baoqing Zhang - Lanzhou University
Baorong Wang - Research Center of Water and Soil Conservation and Ecological Environment - CAS & MOEBaorong Wang - Research Center of Water and Soil Conservation and Ecological Environment - CAS & MOE
Bin Cao - Institute of Tibetan Plateau Research - Chinese Academy of Sciences
Bin Wang - School of Soil and Water Conservation - Beijing Forestry University
Bo Ma - Research Center of Water and Soil Conservation and Ecological Environment - CAS & MOE
Chen Zeng - Institute of Tibetan Plateau Research - CAS
Chiyuan Miao - Beijing Normal University
Donghong Xiong-Institute of Mountain Hazard and Environment-CAS
Genxu Wang - Institute of Mountain Hazard and Environment - CAS
Guanghui Zhang - Beijing Normal University
Guanxing Wang - Institute of Tibetan Plateau Research - CAS
Jinshi Jian - Research Center of Water and Soil Conservation and Ecological Environment - CAS & MOE
Junzhi Liu - Center for Pan-third Pole Environment - Lanzhou University
Kun Shi - Nanjing Institute of Geography and Limnology - Chinese Academy of Sciences
Laosheng Wu - University of California - Riverside
Li Wang - Institute of Tibetan Plateau Research - CAS
Minghang Guo - Institute of Soil and Water Conservation - Northwest A&F University
Peiqing Xiao - Yellow River Institute of Hydraulic Research
Peng Jiang - College of Hohai University College of Hydrology and Water Resources
Peng Li - Xi’an University of Technology
Qiang Zhang - Beijing Normal University
Shaoshan An - Research Center of Water and Soil Conservation and Ecological Environment - CAS & MOE
Tao Yan - University of Hawaii at Manoa
Xiangying Li - College of Urban and Environmental Science - Northwest University
Xiaodan Wang - Institute of Mountain Hazards and Environment - CAS
Xiaofan Yang - Faculty of Geographical Science - Beijing Normal University
Xiaonan Shi - Institute of Tibetan Plateau Research - CAS
Xingxing Zhang - Institute of Geographic Sciences and Natural Resources Research - Chinese Academy of SciencesXingxing Zhang - Institute of Geographic Sciences and Natural Resources Research - Chinese Academy of Sciences
Yang Zhao - Institute of Tibetan Plateau Research - CAS
Yanru Wen - Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural SciencesYanru Wen - Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences
Yimei Huang - Research Center of Water and Soil Conservation and Ecological Environment - CAS & MOE
Yunpeng Xie - Institute of Tibetan Plateau Research - CAS
Zengyun Hu - XinJiang Institute of Ecology and Geography Chinese Academy of Sciences
Zhangdong Jin - Institute of Earth Environment - CAS
Zhihua Shi - College of Resources&Environment of Huazhong Agricultural University
Zhiyong Liu - Sun Yat-sen University