Water budgets in an arid and alpine permafrost basin:Observations from the High Mountain Asia  

作　　者：Qing-Feng WANG Hui-Jun JIN Dong-Liang LUO Yu SHENG Jun WEN Chien-Lu PING Mark H.CLARK Qiang MA Xiao-Ying JIN Ji-Chun WU Yu-Zhong YANG Qiang LI Raul D.SERBAN Daqing YANG Victor F.BENSE Qing-Bai WU 

机构地区：[1]Key Laboratory of Cryospheric Science and Frozen Soil Engineering,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China [2]Qinghai-Beiluhe Plateau Frozen Soil Engineering Safety National Oseration and Research Station Norhwes Institute of Eco-Environment and Resources Chinese Academy of Sciences,Lanzhou 730000,China [3]School of Civil Engineering and Transportation,China-Russia Joint Laboratory of Cold Regions Engineering and Environment,and Permafrost Institute,Northeast Forestry University,Harbin 150040 China [4]College of Atmospheric Science,Plateau Atmosphere and Environment Key Laboratory of Sichuan Province,Chengdu University of Information Technology Chengdu 610225,China [5]Agricultural and Forestry Experiment Station,University of Alaska Fairbanks,Palmer Research Center,Palmer 99645,USA [6]USDA-Natural Resources Conservation Service,Palmer 99645,USA [7]College of Water Conservancy and Hydropower Engineering,Gansu Agricultural University,Lanzhou 730070,China [8]Institute for Alpine Environment,Eurac Research,Bolzano 39100,Italy [9]Faculty of Agricultural,Environmental and Food Sciences,Free University of Bozen-Bolzano,Bolzano 39100,Italy [10]Watershed Hydrology and Ecology Division,Environment and Climate Change Canada,Victoria V8S 3V3,Canada [11]Institute of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing 100101,China [12]Hydrology and Quantiative Water Management Group,Department of Environmental Sciences,Wageningen University,Wageningen 6700,The Netherlands

出　　处：《Advances in Climate Change Research》2024年第5期830-844,共15页气候变化研究进展（英文版）

基　　金：supported by the Natural Science Foundation of China(41971091);Autonomous Province of Bozen/Bolzano-Department for Innovation,Research and University in the frame of the International Mobility for Researchers Programme(13585/2023).

摘　　要：Ground freeze-thaw processes have significant impacts on infiltration,runoff and evapotranspiration.However,there are still critical knowledge gaps in understanding of hydrological processes in permafrost regions,especially of the interactions among permafrost,ecology,and hydrology.In this study,an alpine permafrost basin on the northeastern Qinghai-Tibet Plateau was selected to conduct hydrological and meteorological observations.We analyzed the annual variations in runoff,precipitation,evapotranspiration,and changes in water storage,as well as the mechanisms for runoff gen-eration in the basin from May 2014 to December 2015.The annual flow curve in the basin exhibited peaks both in spring and autumn floods.The high ratio of evapotranspiration to annual precipitation(>1.O)in the investigated wetland is mainly due to the considerably underestimated‘observed'precipitation caused by the wind-induced instrumental error and the neglect of snow sublimation.The stream flow from early May to late October probably came from the lateral discharge of subsurface flow in alpine wetlands.This study can provide data support and validation for hydrological model simulation and prediction,as well as water resource assessment,in the upper Yellow River Basin,especially for the headwater area.The results also provide case support for permafrost hydrology modeling in ungauged or poorly gauged watersheds in the High Mountain Asia.

关 键 词：Water budget RUNOFF Freeze-thaw processes Active layer Permafrost basin Alpine wetland 

分 类 号：P642.14[天文地球—工程地质学]