Review
Geosciences, Multidisciplinary
Hongkai Gao, Jingjing Wang, Yuzhong Yang, Xicai Pan, Yongjian Ding, Zheng Duan
Summary: Permafrost covering 40% of the Qinghai-Tibet Plateau significantly impacts surface runoff and the hydraulic connection with groundwater. The degradation of permafrost due to accelerating warming is altering regional hydrological regimes, attracting interdisciplinary attention. However, there are still knowledge gaps in the systematic review of permafrost hydrological processes and modeling on the QTP.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Meteorology & Atmospheric Sciences
Feng Yan, Yanjiao Wang, Qi Lu, Li Qiao
Summary: Covering 50%-56% of the Qinghai-Tibet Plateau (QTP), seasonal frozen ground (SFG) has significant impacts on the local and global climate change, terrestrial ecosystems, and regional energy and hydrological cycles. This study utilized long-term observational data to analyze the temporal and spatial changes of SFG in the central-eastern QTP and identified latitude and altitude as key factors influencing the freeze-thaw activities. Surface air temperature, soil temperature, precipitation, and soil moisture were found to be significantly correlated with the freeze-thaw changes of SFG.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2023)
Article
Soil Science
Guojie Hu, Lin Zhao, Ren Li, Xiaodong Wu, Tonghua Wu, Defu Zou, Xiaofan Zhu, Chen Jie, Youqi Su, Junming Hao, Wangping Li
Summary: The seasonal dynamics of the freeze-thaw front during the freezing and thawing period strongly affect the hydrothermal processes in permafrost regions. This study analyzed the freeze-thaw front dynamics using field observation data in the Qinghai-Tibet Plateau. Changes in the freeze-thaw front were characterized by three distinct stages: the downward migration of the thaw front, zero curtain process at the bottom of the active layer, and the bidirectional freezing period. The findings provide insights into the hydrothermal characteristics of the active layers in permafrost regions and can improve future permafrost simulation models.
Article
Geosciences, Multidisciplinary
Yu-Jun Ma, Ting Xie, Xiao-Yan Li
Summary: Soil organic carbon (SOC) on the Qinghai-Tibet plateau plays a significant role in global carbon dynamics. This study assessed the SOC stock and spatial patterns in the Qinghai Lake watershed. The results showed that SOC content decreased with depth and varied among different vegetation types. Soil profile depth, soil water content, and NDVI together explained a large portion of the variation in SOC density. The regression-kriging method was found to be the best approach for predicting SOC in the study area. The assessment revealed high storage and heterogeneity of SOC in the watershed, with implications for the sustainability of regional terrestrial ecosystems.
Article
Environmental Sciences
Wenhao Liu, Ren Li, Tonghua Wu, Xiaoqian Shi, Lin Zhao, Xiaodong Wu, Guojie Hu, Jimin Yao, Dong Wang, Yao Xiao, Junjie Ma, Yongliang Jiao, Shenning Wang, Defu Zou, Xiaofan Zhu, Jie Chen, Jianzong Shi, Yongping Qiao
Summary: In this study, the spatial distribution patterns and spatiotemporal variation of soil thermal conductivity (STC) in the shallow layer of the Qinghai-Tibet Plateau and the permafrost area were simulated using a machine learning model. The results showed that STC in the permafrost region was higher during the thawing period and varied among different regions. The study provides important baseline data for the subsequent analysis and simulation of permafrost on the Qinghai-Tibet Plateau.
Article
Environmental Sciences
Zhou Gao, Xia Hu, Xiao-Yan Li, Zong-Chao Li
Summary: The study found that the soil macropore network of hummocks was more extensive and continuous than that of interhummocks. During freeze-thaw cycles, the soil macropore number and size were significantly affected, while the morphology had less impact. Soil moisture played a crucial role in the formation of hummocks.
JOURNAL OF SOILS AND SEDIMENTS
(2021)
Article
Geochemistry & Geophysics
Wentao Yang, Fei Guo, Xiaohong Zhang, Tianhe Xu, Nazi Wang, Lili Jing
Summary: This study used high temporal and spatial resolution GNSS-R data to detect soil freeze-thaw (F/T) cycles. The results showed that CYGNSS accurately detected the F/T state of near-surface soil and can improve the F/T detection capability.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2023)
Article
Environmental Sciences
Jie Ni, Tonghua Wu, Xiaofan Zhu, Xiaodong Wu, Qiangqiang Pang, Defu Zou, Jie Chen, Ren Li, Guojie Hu, Yizhen Du, Junming Hao, Xiangfei Li, Yongping Qiao
Summary: The study found that ground ice is a critical factor in assessing settlement risk in permafrost regions. In the future, the proportion of low-risk areas along the Qinghai-Tibet Railway will be the highest, while the combination of medium-risk and high-risk areas will account for over 40%.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Cao Wei, Sheng Yu, Wu Jichun, Chou Yaling, Peng Erxing, Gagarin Leonid
Summary: The study found that soil hydrological processes in the active layer of permafrost regions are influenced by factors such as temperature, terrain, and precipitation. Soil moisture and suprapermafrost water level show different stage changes with the freeze-thaw process, while soil temperature exhibits significant linear correlations with soil moisture and suprapermafrost water level.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Chenglong Jiao, Yizhao Wang, Yi Shan, Peifeng He, Junlin He
Summary: Thermokarst terrain, including retrogressive thaw slumps, is rapidly developing on the ice-rich permafrost of the Qinghai-Tibet Plateau in China. However, the impacts of freeze-thaw erosion caused by thermokarsts, especially in terms of sediment migration, have not been quantified due to limitations in hydro-thermal-mass transport laws. This study developed a coupled model to simulate the geotemperature regime and groundwater flow in a retrogressive thaw slump area, allowing for the quantification of permafrost thaw and mass wasting. The results showed significant seepage velocities in the superficial zone, an average thaw volume of 13.4 m(2), and a cumulative mass transport volume of 22 m(2). The relationship between freeze-thaw erosion and ground ice ablation can be described by an exponential equation. This work provides a reliable method for quantifying the effects of freeze-thaw erosion and assessing the eco-environmental impacts of retrogressive thaw slumps.
LAND DEGRADATION & DEVELOPMENT
(2023)
Article
Agriculture, Dairy & Animal Science
Ting Xie, Yu-Jun Ma
Summary: This study analyzed the soil temperature variation under the disturbance of plateau zokor in grassland, mound, and bald patch, and used the SHAW model to simulate the soil temperature change of three land surface types. The results showed that the disturbance of plateau zokor alters the soil properties and vegetation characteristics, and distinctly affects heat transfer and soil temperature.
Article
Meteorology & Atmospheric Sciences
Junjie Ma, Ren Li, Hongchao Liu, Zhongwei Huang, Tonghua Wu, Guojie Hu, Yao Xiao, Lin Zhao, Yizhen Du, Shuhua Yang
Summary: This study analyzed the interaction between surface energy budget and freeze-thaw processes, finding seasonal variations and important influencing factors.
ADVANCES IN ATMOSPHERIC SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Renwei Li, Mingyi Zhang, Pavel Konstantinov, Wansheng Pei, Oleg Tregubov, Guanji Li
Summary: This study aims to provide the first hazard data-driven thaw settlement susceptibility map for the Qinghai-Tibet Plateau (QTP) and identify high-risk areas for decision makers.
Article
Environmental Sciences
Hongwei Zhang, Lihui Tian, Eerdun Hasi, Dengshan Zhang, Wangyang Wu
Summary: Different types of dunes affect vegetation growth and soil moisture distribution in the alpine desert. Plant community characteristics and soil properties show differences in different sand-binding communities. This study provides valuable insights into plant-soil-water relationships and sand-fixation effectiveness.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Hongkai Gao, Chuntan Han, Rensheng Chen, Zijing Feng, Kang Wang, Fabrizio Fenicia, Hubert Savenije
Summary: This study explores the impact of frozen soil on catchment hydrology and develops a novel frozen soil hydrological model to explain newly identified hydrological properties. By utilizing expert-driven data analysis and modeling, the complex hydrological processes are successfully simulated, providing new insights for frozen soil hydrology research.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2022)
Article
Environmental Sciences
Fei Ran, Rui-ying Chang, Yang Yang, Wan-ze Zhu, Ji Luo, Gen-xu Wang
JOURNAL OF MOUNTAIN SCIENCE
(2017)
Article
Environmental Sciences
Genxu Wang, Wei Bai, Na Li, Hongchang Hu
Article
Soil Science
Wang Genxu, Li Yuanshou, Wang Yibo, Wu Qingbo
Article
Soil Science
Wang Genxu, Li Shengnan, Hu Hongchang, Li Yuanshou
Article
Geography, Physical
Genxu Wang, Lin'an Liu, Guangsheng Liu, Hongchang Hu, Taibin Li
PERMAFROST AND PERIGLACIAL PROCESSES
(2010)
Article
Engineering, Environmental
Wang Genxu, Zhou Jian, Jumpei Kubota, Su Jianping
WATER ENVIRONMENT RESEARCH
(2008)
Article
Ecology
Wei Bai, Genxu Wang, Jingyang Xi, Yongwan Liu, Pengsong Yin
EUROPEAN JOURNAL OF SOIL BIOLOGY
(2019)
Article
Environmental Sciences
Ju-ying Sun, Xiang-yang Sun, Zhao-yong Hu, Gen-xu Wang
JOURNAL OF MOUNTAIN SCIENCE
(2020)
Article
Environmental Sciences
Naveed Ahmed, Wang Gen-xu, Adeyeri Oluwafemi, Sarfraz Munir, Hu Zhao-yong, Aamir Shakoor, Muhammad Ali Imran
JOURNAL OF MOUNTAIN SCIENCE
(2020)
Article
Environmental Sciences
Long-yu Jia, Gen-xu Wang, Ji Luo, Fei Ran, Wei Li, Jun Zhou, Dan-li Yang, Wen-bo Shi, Qian Xu, Kun Zhu, Yang Yang
Summary: The forest ecosystem in Tibet plays a crucial role in mitigating climate change, with carbon density and storage displaying spatial variation patterns. The main influential factor is temperature.
JOURNAL OF MOUNTAIN SCIENCE
(2021)
Article
Environmental Sciences
Yu Hui, Liu Bin-tao, Wang Gen-xu, Zhang Tong-zuo, Yang Yan, Lu Ya-qiong, Xu You-xue, Huang Min, Yang Yi, Zhang Lv
Summary: The Yellow River Source National Park is a highly sensitive and fragile ecological region due to historical grazing and climate change. Assessment of grassland ecological carrying capability and balance between wild ungulates and livestock in the area showed that while livestock were not overloaded, the grassland faced pressure above the warning line. Recommendations for a sustainable strategy include increasing supplementary feeding or reducing grazing livestock to maintain a balanced ecosystem.
JOURNAL OF MOUNTAIN SCIENCE
(2021)
Article
Environmental Sciences
An-ni Qiu, Yan-jun Zhang, Gen-xu Wang, Jun-fang Cui, Yuan-xin Song, Xiang-yang Sun, Li Chen
Summary: Subsurface stormflow is a dominant runoff mechanism in steep humid mountainous areas. This study introduces the bedrock surface topographic index and develops a modified TOPMODEL to improve runoff simulation performance. The modified TOPMODEL performs well in the HBL watershed, especially for peak simulation.
JOURNAL OF MOUNTAIN SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Wenjing Yang, Yibo Wang, Xin Liu, Haipeng Zhao, Genxu Wang, Rui Shao
Article
Geosciences, Multidisciplinary
W. Genxu, H. Hongchang, L. Guangsheng, L. Na
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2009)
Article
Engineering, Civil
Arfan Arshad, Ali Mirchi, Javier Vilcaez, Muhammad Umar Akbar, Kaveh Madani
Summary: High-resolution, continuous groundwater data is crucial for adaptive aquifer management. This study presents a predictive modeling framework that incorporates covariates and existing observations to estimate groundwater level changes. The framework outperforms other methods and provides reliable estimates for unmonitored sites. The study also examines groundwater level changes in different regions and highlights the importance of effective aquifer management.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Lihua Chen, Jie Deng, Wenzhe Yang, Hang Chen
Summary: A new grid-based distributed karst hydrological model (GDKHM) is developed to simulate streamflow in the flood-prone karst area of Southwest China. The results show that the GDKHM performs well in predicting floods and capturing the spatial variability of karst system.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Faruk Gurbuz, Avinash Mudireddy, Ricardo Mantilla, Shaoping Xiao
Summary: Machine learning algorithms have shown better performance in streamflow prediction compared to traditional hydrological models. In this study, researchers proposed a methodology to test and benchmark ML algorithms using artificial data generated by physically-based hydrological models. They found that deep learning algorithms can correctly identify the relationship between streamflow and rainfall in certain conditions, but fail to outperform traditional prediction methods in other scenarios.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Yadong Ji, Jianyu Fu, Bingjun Liu, Zeqin Huang, Xuejin Tan
Summary: This study distinguishes the uncertainty in drought projection into scenario uncertainty, model uncertainty, and internal variability uncertainty. The results show that the estimation of total uncertainty reaches a minimum in the mid-21st century and that model uncertainty is dominant in tropical regions.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Z. R. van Leeuwen, M. J. Klaar, M. W. Smith, L. E. Brown
Summary: This study quantifies the effectiveness of leaky dams in reducing flood peak magnitude using a transfer function noise modelling approach. The results show that leaky dams have a significant but highly variable impact on flood peak magnitude, and managing expectations should consider event size and type.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Zeda Yin, Yasaman Saadati, M. Hadi Amini, Linlong Bian, Beichao Hu
Summary: Combined sewer overflows pose significant threats to public health and the environment, and various strategies have been proposed to mitigate their adverse effects. Smart control strategies have gained traction due to their cost-effectiveness but face challenges in balancing precision and computational efficiency. To address this, we propose exploring machine learning models and the inversion of neural networks for more efficient CSO prediction and optimization.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Qimou Zhang, Jiacong Huang, Jing Zhang, Rui Qian, Zhen Cui, Junfeng Gao
Summary: This study developed a N-cycling model for lowland rural rivers covered by macrophytes and investigated the N imports, exports, and response to sediment dredging. The findings showed a considerable N retention ability in the study river, with significant N imports from connected rivers and surrounding polders. Sediment dredging increased particulate nitrogen resuspension and settling rates, while decreasing ammonia nitrogen release, denitrification, and macrophyte uptake rates.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Xue Li, Yingyin Zhou, Jian Sha, Man Zhang, Zhong-Liang Wang
Summary: High-resolution climate data is crucial for predicting regional climate and water environment changes. In this study, a two-step downscaling method was developed to enhance the spatial resolution of GCM data and improve the accuracy for small basins. The method combined medium-resolution climate data with high-resolution topographic data to capture spatial and temporal details. The downscaled climate data were then used to simulate the impacts of climate change on hydrology and water quality in a small basin. The results demonstrated the effectiveness of the downscaling method for spatially differentiated simulations.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Tongqing Shen, Peng Jiang, Jiahui Zhao, Xuegao Chen, Hui Lin, Bin Yang, Changhai Tan, Ying Zhang, Xinting Fu, Zhongbo Yu
Summary: This study evaluates the long-term interannual dynamics of permafrost distribution and active layer thickness on the Tibetan Plateau, and predicts future degradation trends. The results show that permafrost area has been decreasing and active layer thickness has been increasing, with an accelerated degradation observed in recent decades. This has significant implications for local water cycle processes, water ecology, and water security.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Chi Zhang, Xu Zhang, Qiuhong Tang, Deliang Chen, Jinchuan Huang, Shaohong Wu, Yubo Liu
Summary: Precipitation over the Tibetan Plateau is influenced by systems such as the Asian monsoons, the westerlies, and local circulations. The Indian monsoon, the westerlies, and local circulations are the main systems affecting precipitation over the entire Tibetan Plateau. The East Asian summer monsoon primarily affects the eastern Tibetan Plateau. The Indian monsoon has the greatest influence on precipitation in the southern and central grid cells, while the westerlies have the greatest influence on precipitation in the northern and western grid cells. Local circulations have the strongest influence on the central and eastern grid cells.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Manuel Almeida, Antonio Rodrigues, Pedro Coelho
Summary: This study aimed to improve the accuracy of Total Phosphorus export coefficient models, which are essential for water management. Four different models were applied to 27 agroforestry watersheds in the Mediterranean region. The modeling approach showed significant improvements in predicting the Total Phosphorus diffuse loads.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Yutao Wang, Haojie Yin, Ziyi Wang, Yi Li, Pingping Wang, Longfei Wang
Summary: This study investigated the distribution and transformation of dissolved organic nitrogen (DON) in riverbed sediments impacted by effluent discharge. The authors found that the spectral characteristics of dissolved organic matter (DOM) in surface water and sediment porewater could be used to predict DON variations in riverbed sediments. Random forest and extreme gradient boosting machine learning methods were employed to provide accurate predictions of DON content and properties at different depths. These findings have important implications for wastewater discharge management and river health.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Saba Mirza Alipour, Kolbjorn Engeland, Joao Leal
Summary: This study assesses the uncertainty associated with 100-year flood maps under different scenarios using Monte Carlo simulations. The findings highlight the importance of employing probabilistic approaches for accurate and secure flood maps, with the selection of probability distribution being the primary source of uncertainty in precipitation.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Janine A. de Wit, Marjolein H. J. van Huijgevoort, Jos C. van Dam, Ge A. P. H. van den Eertwegh, Dion van Deijl, Coen J. Ritsema, Ruud P. Bartholomeus
Summary: The study focuses on the hydrological consequences of controlled drainage with subirrigation (CD-SI) on groundwater level, soil moisture content, and soil water potential. The simulations show that CD-SI can improve hydrological conditions for crop growth, but the success depends on subtle differences in geohydrologic characteristics.
JOURNAL OF HYDROLOGY
(2024)
Article
Engineering, Civil
Constantin Seidl, Sarah Ann Wheeler, Declan Page
Summary: Water availability and quality issues will become increasingly important in the future due to climate change impacts. Managed Aquifer Recharge (MAR) is an effective water management tool, but often overlooked. This study analyzes global MAR applications and identifies the key factors for success, providing valuable insights for future design and application.
JOURNAL OF HYDROLOGY
(2024)