Quantifying the impacts of human activities on runoff and sediment load changes in a Loess Plateau catchment, China

doi:10.1007/s11368-019-02353-z

	Quantifying the impacts of human activities on runoff and sediment load changes in a Loess Plateau catchment, China
	Hu, Jinfei 2,3; Zhao, Guangju 2,4; Mu, Xingmin 2,4; Tian, Peng 1; Gao, Peng 2,4; Sun, Wenyi 2,4
刊名	JOURNAL OF SOILS AND SEDIMENTS
	2019-11-01
卷号	19 期号:11 页码:3866-3880
关键词	Climate variability Human activities Paired flood events Runoff Suspended sediment load
ISSN号	1439-0108
DOI	10.1007/s11368-019-02353-z
通讯作者	Zhao, Guangju(gjzhao@ms.iswc.ac.cn) ; Mu, Xingmin(xmmu@ms.iswc.ac.cn)
英文摘要	Purpose Significant changes in the runoff and sediment load have been detected in many catchments of the Loess Plateau. These changes are expected to be influenced by the interplay of climate variability and human activities. Quantitatively evaluating these effects is crucial for framing climate variability adaptation measures and the assessment and management of regional water resources. Materials and methods Based on the annual rainfall, runoff, and sediment load data taken over the period from 1974 to 2013 and using data from 112 flood events, this study investigates the runoff and sediment load variations at the annual scale and distinguishes the impacts of climate variability and human activities at the event scale. The Mann-Kendall test and Pettitt's test are employed to detect the trends and abrupt change points of the annual runoff and sediment load. Rainfall and land surface conditions play a dominant role in the runoff and sediment yield of flood events. However, vegetation recovery, which benefits from the Grain-for-Green project and the construction of check dams has greatly changed the land surface condition, resulting in a reduction in streamflow energy, hydrological connectivity, and flood peaks. Therefore, for two flood events with similar rainfall conditions but different runoff and sediment yield, the differences in the runoff and sediment load within paired events may be attributed to the changes in the land surface condition induced by human activities. Results and discussion The results showed that the annual runoff and sediment load has significantly decreasing trends (p < 0.05). The abrupt changing point was detected in 1996, dividing the runoff and sediment load series into a baseline period (1974-1995) and a changing period (1996-2013). At the flood event scale, the hysteresis analysis showed that the counter-clockwise and figure-eight loops are the main patterns for both of the periods. The relationships between the runoff depth (H) and sediment yield (SY) varied greatly in 2007-2013 compared with those during 1974-1989. Human activities accounted for an average of 47 and 81% for the changes in the runoff and sediment load, respectively, and the remainder was attributable to climate variability. Conclusions Human activities have a greater effect on the sediment load reduction in the Xichuan River catchment, while climate variability accounted for more of the runoff changes.
资助项目	National Key Scientific Research Project[2016YFC0402401] ; National Natural Science Foundation of China[41671285] ; National Natural Science Foundation of China[51509206] ; Shaanxi Youth Science and Technology[2015KJXX-58] ; Special Funds of Scientific Research Programs of the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021403-Q2]
WOS关键词	YELLOW-RIVER BASIN ; LAND-USE CHANGE ; SUSPENDED SEDIMENT ; CLIMATE-CHANGE ; SOIL-EROSION ; CHECK DAMS ; WATER-RESOURCES ; STREAMFLOW ; VARIABILITY ; DISCHARGE
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000491550500019
资助机构	National Key Scientific Research Project ; National Natural Science Foundation of China ; Shaanxi Youth Science and Technology ; Special Funds of Scientific Research Programs of the State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/131646]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhao, Guangju; Mu, Xingmin
作者单位	1.Northwest A&F Univ, Coll Resources & Environm, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dry Farming Loess Plate, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, 26 Xinong Rd, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Hu, Jinfei,Zhao, Guangju,Mu, Xingmin,et al. Quantifying the impacts of human activities on runoff and sediment load changes in a Loess Plateau catchment, China[J]. JOURNAL OF SOILS AND SEDIMENTS,2019,19(11):3866-3880.
APA	Hu, Jinfei,Zhao, Guangju,Mu, Xingmin,Tian, Peng,Gao, Peng,&Sun, Wenyi.(2019).Quantifying the impacts of human activities on runoff and sediment load changes in a Loess Plateau catchment, China.JOURNAL OF SOILS AND SEDIMENTS,19(11),3866-3880.
MLA	Hu, Jinfei,et al."Quantifying the impacts of human activities on runoff and sediment load changes in a Loess Plateau catchment, China".JOURNAL OF SOILS AND SEDIMENTS 19.11(2019):3866-3880.