干旱区生态环境知识资源中心(Arid): Human Contribution to the Variation of Runoff under Climatic Background over the Laohahe Basin, Northeast China

Arid

DOI	10.3390/w13192642
	Human Contribution to the Variation of Runoff under Climatic Background over the Laohahe Basin, Northeast China
	Gong, Luyan; Ren, Liliang; Yuan, Shanshui; Jiang, Shanhu
通讯作者	Ren, LL (corresponding author), State Key Lab Hydrol Water Resources & Hydraul En, 1 Xikang Rd, Nanjing 210098, Peoples R China. ; Ren, LL (corresponding author), Hohai Univ, Coll Hydrol & Water Resources, Nanjing 210098, Peoples R China.
来源期刊	WATER
EISSN	2073-4441
出版年	2021
卷号	13 期号:19
英文摘要	The Laohahe basin is one of the typical semi-arid regions in Northeast China. Quantitatively estimating the contributions of human intervention and climatic variability on runoff changes in this region will help enhance the understanding of local hydrological mechanisms and provide an effective reference for water resources planning and management in other semi-arid regions of the world. The non-parametric Mann-Kendall test was used to analyze the temporal trends of annual precipitation, potential evapotranspiration (PET), and runoff in the whole Laohahe basin and its three sub-basins from 1964 to 2015. The annual runoff showed a decreasing trend in each sub-basin. The change-points of annual runoff detected by Pettitt's test and residual analysis based on double mass curves (RA-DMC) are 1979 and 1998, and the baseline period and change period of each basin are 1964-1979 and 1980-2015. The RA-DMC method and the VIC model were used to quantitatively evaluate the contributions of human intervention and climatic variability to runoff change, which vary in time and space over the past 52 years. The contributions of human intervention to runoff reduction during 1980-2015 was more than 80%. On a multi-decadal temporal scale, human intervention had a stronger impact on runoff during 1980-1989, 2000-2009, and 2010-2015. The influence of human intervention on runoff reduction is gradually increasing in the 21st century. Besides, human intervention has a greater impact in dry years than in wet years. The increase of cropland area leads to a significant increase in irrigation area, which further leads to an increase in the demand for agricultural water, which is also the main reason for the sharp reduction of runoff in the Laohahe basin.
英文关键词	runoff human intervention climatic variability precipitation hydrologic model Laohahe basin
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:000707322200001
WOS关键词	RIVER-BASIN ; SEMIARID BASIN ; YELLOW-RIVER ; WATER ; VARIABILITY ; STREAMFLOW ; IMPACTS ; REGION ; CATCHMENT
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
来源机构	河海大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364851
作者单位	[Gong, Luyan; Ren, Liliang; Jiang, Shanhu] State Key Lab Hydrol Water Resources & Hydraul En, 1 Xikang Rd, Nanjing 210098, Peoples R China; [Gong, Luyan; Ren, Liliang; Jiang, Shanhu] Hohai Univ, Coll Hydrol & Water Resources, Nanjing 210098, Peoples R China; [Yuan, Shanshui] Hohai Univ, Yangtze Inst Conservat & Dev, Nanjing 210098, Peoples R China
推荐引用方式 GB/T 7714	Gong, Luyan,Ren, Liliang,Yuan, Shanshui,et al. Human Contribution to the Variation of Runoff under Climatic Background over the Laohahe Basin, Northeast China[J]. 河海大学,2021,13(19).
APA	Gong, Luyan,Ren, Liliang,Yuan, Shanshui,&Jiang, Shanhu.(2021).Human Contribution to the Variation of Runoff under Climatic Background over the Laohahe Basin, Northeast China.WATER,13(19).
MLA	Gong, Luyan,et al."Human Contribution to the Variation of Runoff under Climatic Background over the Laohahe Basin, Northeast China".WATER 13.19(2021).