DOI: 10.1002/2017JD027625
Scopus记录号: 2-s2.0-85043379276
论文题名: Effects of Climate/Land Surface Changes on Streamflow With Consideration of Precipitation Intensity and Catchment Characteristics in the Yellow River Basin
作者: Lv M. ; Ma Z. ; Lv M.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 4 起始页码: 1942
结束页码: 1958
语种: 英语
英文关键词: catchment characteristics
; climate elasticity of streamflow
; precipitation intensity
; Yellow River Basin
Scopus关键词: catchment
; headwater
; potential evapotranspiration
; precipitation intensity
; streamflow
; China
; Yellow River Basin
英文摘要: The climate elasticity of streamflow is an important indicator for quantifying the contributions of climate/underlying surface changes to streamflow, but precipitation intensity and catchment characteristics are usually ignored. In this study, the effects of precipitation amount (P), precipitation intensity (i), potential evapotranspiration (ET0), and multiple catchment characteristics parameters (including parameter n of the Choudhury-Yang equation and vegetation leaf area index, LAI) on naturalized streamflow were estimated for the Yellow River Basin of China using elasticity of streamflow. The results showed that the naturalized streamflow was most sensitive to ET0, followed by P and i in terms of climate elasticity. The factors responsible for the decrease in naturalized streamflow in 2001–2010 relative to 1961–2000 varied across the basin. Factors i and ET0 played the most important roles in the headwaters and were responsible for 27.0% and −82.7% of the absolute streamflow change. The dominant factors were P (−17.6% to −12.5%), ET0 (−19.2% to −14.4%), and LAI (−22.9% to −14.0%) in the middle-lower subbasins. The contributions of parameter n and LAI were similar in the headwaters, but the contribution of LAI became relatively large in the downstream. The physical meaning of n, which has not been clearly identified, was discussed in this study. The annual n was correlated well with the sum of evapotranspiration and terrestrial water storage, which represents the water both stored in the ground and evaporated into the air. The findings of this study can provide guidance for the river basin water resource management. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114431
Appears in Collections: 气候减缓与适应
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作者单位: CAS Key Laboratory of Regional Climate-Environment for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Lv M.,Ma Z.,Lv M.. Effects of Climate/Land Surface Changes on Streamflow With Consideration of Precipitation Intensity and Catchment Characteristics in the Yellow River Basin[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(4)