干旱区生态环境知识资源中心(Arid): Is the runoff coefficient increasing or decreasing after ecological restoration on China's Loess Plateau?

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DOI	10.1016/j.iswcr.2021.04.009
	Is the runoff coefficient increasing or decreasing after ecological restoration on China's Loess Plateau?
	Zheng, Haiyan; Miao, Chiyuan; Zhang, Guanghui; Li, Xiaoyan; Wang, Shuai; Wu, Jingwen; Gou, Jiaojiao
通讯作者	Miao, CY (corresponding author), Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China.
来源期刊	INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH
ISSN	2095-6339
EISSN	2589-059X
出版年	2021
卷号	9 期号:3 页码:333-343
英文摘要	The Grain for Green project (GGP) was launched in 1999 on China's Loess Plateau to reduce soil erosion, which had far-reaching impacts on the local eco-hydrological processes. In this study, we use monthly runoff depth and precipitation datasets spanning 1961 to 2015 for 16 primary basins of the plateau to reveal changes in runoff generation capacity before and after the GGP. We use a Budyko-based elasticity method to calculate the runoff depth (R-1) and runoff coefficient (C-1) exclusively attributable to land use/ cover change. Results indicate that the mean annual runoff coefficients (C-0) decline by 26%-76% from the periods 1961-1999 to 2000-2015. The annual observed runoff depth (R-0) and C-0 for 75% of basins show significant downward trends during 1961-1999; after the implementation of the GGP, both annual R-0 and annual C-0 for over 50% of basins show upward trends. The study further finds that the increase of erosive rainfall during the period 2000-2015, whose mean increasing rate reaches 4.6 mm/year, is the main reason for the upward trends of R-0 and C-0. After removing the effect of precipitation variation during this period, we find that 11 out of 16 basins show decreased trends for C-1, with the downward rate between 2.4% and 6.0% per year. The reduction rate in semi-arid areas is about four times the rate in semi-humid areas. The results remind us to consider the carrying capacity of local water resources when implementing soil and water conservation measures across the Loess Plateau. (C) 2021 International Research and Training Center on Erosion and Sedimentation, China Water & Power Press. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd.
英文关键词	Loess Plateau Precipitation Runoff coefficient Budyko-based elasticity method Land use/cover change
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000659949800003
WOS关键词	CLIMATE-CHANGE ; EVAPORATION ; PRECIPITATION ; VARIABILITY ; RESPONSES ; EROSION
WOS类目	Environmental Sciences ; Soil Science ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Agriculture ; Water Resources
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350614
作者单位	[Zheng, Haiyan; Miao, Chiyuan; Zhang, Guanghui; Li, Xiaoyan; Wang, Shuai; Wu, Jingwen; Gou, Jiaojiao] Beijing Normal Univ, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Haiyan,Miao, Chiyuan,Zhang, Guanghui,et al. Is the runoff coefficient increasing or decreasing after ecological restoration on China's Loess Plateau?[J]. 北京师范大学,2021,9(3):333-343.
APA	Zheng, Haiyan.,Miao, Chiyuan.,Zhang, Guanghui.,Li, Xiaoyan.,Wang, Shuai.,...&Gou, Jiaojiao.(2021).Is the runoff coefficient increasing or decreasing after ecological restoration on China's Loess Plateau?.INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH,9(3),333-343.
MLA	Zheng, Haiyan,et al."Is the runoff coefficient increasing or decreasing after ecological restoration on China's Loess Plateau?".INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH 9.3(2021):333-343.