首页|Quantify the impacts of climate variability and anthropogenic activities on runoff:With an improved double mass curve method

Quantify the impacts of climate variability and anthropogenic activities on runoff:With an improved double mass curve method

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Quantitative assessments of the impacts of climate change and anthropogenic ac-tivities on runoff help us to better understand the mechanisms of hydrological processes.This study analyzed the dynamics of mountainous runoff in the upper reaches of the Shiyang River Basin(USRB)and its sub-catchments,and quantified the impacts of climate change and human activities on runoff using the improved double mass curve(IDMC)method,which comprehensively considers the effects of precipitation and evapotranspiration on runoff,in-stead of only considering precipitation as before.The results indicated that the annual runoff depth in the USRB showed a slightly increased trend from 1961 to 2018,and sub-catchments were increased in the west and decreased in the east.The seasonal distribution pattern of run-off depth in the USRB and its eight sub-catchments all showed the largest in summer,followed by autumn and spring,and the smallest in winter with an increasing trend.Quantitative as-sessment results using the IDMC method showed that the runoff change in the USRB is more significantly affected by climate change,however,considerable differences are evident in sub-catchments.This study further developed and improved the method of runoff attribution analysis conducted at watershed scale,and these results will contribute to the ecological protection and sustainable utilization of water resources in the USRB and similar regions.

runoffclimate changeland use/cover change(LUCC)improved double mass curve(IDMC)Qilian Mountains

ZHOU Junju、XUE Dongxiang、YANG Lanting、LIU Chunfang、WEI Wei、YANG Xuemei、ZHAO Yaru

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College of Geography and Environmental Science,Northwest Normal University,Lanzhou 730070,China

Gansu Engineering Research Center of Land Utilization and Comprehension Consolidation,Lanzhou 730070,China

Key Laboratory of Resource Environment and Sustainable Development of Oasis,Gansu Province,Lanzhou 730070,China

College of Earth and Environment Sciences,Lanzhou University,Lanzhou 730000,China

College of Social Development and Public Administration,Northwest Normal University,Lanzhou 730070,China

Tourism School,Lanzhou University of Arts and Science,Lanzhou 730000,China

Institute of Geology and Geophysics,CAS,Beijing 100029,China

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国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金

42361005418610344166104032060373

2023

10.1007/s11442-023-2174-y

地理学报(英文版)
中国地理学会,中国科学院地理科学与资源研究所

地理学报(英文版)

CSTPCDCSCD北大核心
影响因子：1.307
ISSN：1009-637X
年,卷(期)：2023.33(11)
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