Article
Engineering, Civil
Zeyong Gao, Fujun Niu, Yibo Wang, Zhanju Lin, Wei Wang
Summary: The dynamics of suprapermafrost groundwater play a crucial role in regulating hydrological processes in Arctic, boreal, and high-altitude regions. However, there have been limited studies focusing on these dynamics on the Qinghai-Tibet Plateau (QTP). This study observed soil hydraulic conductivities, saturated thicknesses, and related hydrological processes around a typical thermokarst lake on the QTP, revealing fluctuations in water table depths and contributions to lake water by suprapermafrost groundwater.
JOURNAL OF HYDROLOGY
(2021)
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
Lan Li, Xindi Zhang, Xuan Li, Shufang Zhao, Wankui Ni, Zhenzhen Yang
Summary: A thermokarst lake is formed in the Qinghai-Tibet Plateau due to permafrost degradation and glacier retreat. The increase in thermokarst lakes has significant impacts on regional hydro-ecological equilibrium, permafrost temperature, and carbon cycle.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Environmental Sciences
Rui Wang, Lanlan Guo, Yuting Yang, Hao Zheng, Lianyou Liu, Hong Jia, Baijian Diao, Jifu Liu
Summary: The warming climate on the Qinghai-Tibet Plateau leads to permafrost degradation and the formation of thermokarst lakes. These lakes exacerbate permafrost instability and have significant impacts on regional geomorphology and hydrology. However, their spatial distribution and future changes have rarely been assessed at large scales.
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
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
Li Wang, Guimin Liu, Peng Ma, Zhouyun Cheng, Yaoxing Wang, Yuying Li, Xiaodong Wu
Summary: The rapid permafrost degradation caused by climate warming can lead to thermokarst development, which in turn greatly alter soil parameters and impact the soil bacterial communities. However, the effects of thermokarst development on soil bacterial communities largely remain unclear.
Article
Environmental Sciences
Ruijie Wang, Yanjiao Wang, Feng Yan
Summary: This study investigates the effects of topography on the growth status of vegetation in frozen soil regions on the Qinghai-Tibet Plateau. The results show that topographic factors, especially elevation and slope, significantly influence the spatial and temporal variations of vegetation cover in different soil types on the plateau.
Article
Environmental Sciences
Zixuan Ni, Xiangfei Lu, Guanwen Huang
Summary: Weather conditions significantly impact thermokarst lakes, with the total lake area mainly influenced by annual average temperature. The study used Pearson correlation and multiple linear regression to analyze this relationship, finding that the total area of typical thermokarst lakes increased annually. The selected thermokarst lake's surface area was found to be related to annual average temperature and wind speed.
Article
Engineering, Geological
Tao Wang, Erxing Peng, Lijiang Xia, Guoqing Zhou, Jianzhou Wang
Summary: This study investigates the uncertainties of thermal boundaries and soil properties in the permafrost regions of the Qinghai-Tibet Plateau through field experiments and Monte Carlo simulations. A stochastic analysis method is proposed for the probabilistic permafrost table, with findings showing that the COV and ACD of thermal boundaries and soil properties affect the depth of permafrost table fluctuations.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2021)
Article
Geosciences, Multidisciplinary
Rui-Zhe Wang, Xia Hu
Summary: Soils in alpine ecosystems are significant carbon sinks, with soil aggregates and their pore structure playing a crucial role in carbon sequestration. This study examined the soil pore structure, carbon content, and their relationships in three typical alpine ecosystems in the Qinghai-Tibet Plateau. The results revealed the dominance of small macroaggregates and microspores in the soil aggregates, as well as the correlation between carbon content and pore characteristics. Additionally, the study highlighted the impact of soil water content and particle compositions on soil organic carbon in different alpine ecosystems.
Article
Geosciences, Multidisciplinary
Guoqing Zhang, Youhua Ran, Wei Wan, Wei Luo, Wenfeng Chen, Fenglin Xu, Xin Li
Summary: Lakes over the Qinghai-Tibet Plateau are effective indicators of climate change, showing rapid responses and transitions over the past century, including shrinkage, growth, and stability.
EARTH SYSTEM SCIENCE DATA
(2021)
Article
Environmental Sciences
Xianmin Ke, Yujiao Li, Wei Wang, Fujun Niu, Zeyong Gao
Summary: This study compared the chemical and hydrogeochemical characteristics of lake water and groundwater in a typical thermokarst lake region on the Qinghai-Tibet Plateau, revealing the variations in contribution of permafrost meltwater and precipitation to groundwater and lake water during different stages of active layer melting.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Geography, Physical
Mei Mu, Cuicui Mu, Pengsi Lei, Xiaoxiao Mo, Yuan Qiao, Xu Chen, Hebin Liu
Summary: This study created a dataset of thermokarst lakes on the Qinghai-Tibet Plateau using Google Earth Engine data and visual inspection. The study analyzed the temporal and spatial changes in the lakes and their relationship to environmental factors. The results showed that the number and surface area of thermokarst lakes in the region have increased over the past 30 years.
Article
Water Resources
Jinhua Hu, Tao Che, Haoran Sun, Xiaofan Yang
Summary: This study focused on simulating the thermo-hydrologic processes in frozen soils on the south-facing and north-facing slopes of a valley in the upper reaches of the Heihe River Basin on the Qinghai-Tibetan Plateau. The results showed that slope aspect has significant impacts on the temperature and moisture distributions in frozen soils, with the south-facing slope experiencing earlier thaw and being drier compared to the north-facing slope. This study provides new insights for understanding integrated hydrological processes and frozen soil-groundwater interactions in cold regions.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2022)
