Quantifying the impacts of human activities on runoff and sediment load changes in a Loess Plateau catchment, China
Hu Jinfei1,2; Mu Xingmin1,3; Tian Peng4; Gao Peng1,3; Sun Wenyi1,3
SubtypeArticle
2019-11
Source PublicationJOURNAL OF SOILS AND SEDIMENTS
ISSN1439-0108
description.correspondentemailgjzhao@ms.iswc.ac.cn ; xmmu@ms.iswc.ac.cn
Volume19Issue:11Pages:3866-3880
Abstract

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 counterclockwise 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.

KeywordClimate Variability Human Activities Paired Flood Events Runoff Suspended Sediment Load
DOI10.1007/s11368-019-02353-z
Indexed BySCI
Language英语
WOS IDWOS:000491550500019
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/9169
Collection水保所2018--2020届毕业生论文(学位论文、期刊论文)
Corresponding AuthorMu Xingmin
Affiliation1.State Key Laboratory of Soil Erosion and Dry Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Xinong Road 26, Yangling 712100, Shaanxi Province, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, 26 Xinong Road, Yangling 712100, Shaanxi Province, China
4.College of Resources and Environment, Northwest A&F University, 26 Xinong Road, Yangling 712100, Shaanxi Province, China
Recommended Citation
GB/T 7714
Hu Jinfei,Mu Xingmin,Tian Peng,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,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.
Files in This Item: Download All
File Name/Size DocType Version Access License
Quantifying the impa(5098KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Hu Jinfei]'s Articles
[Mu Xingmin]'s Articles
[Tian Peng]'s Articles
Baidu academic
Similar articles in Baidu academic
[Hu Jinfei]'s Articles
[Mu Xingmin]'s Articles
[Tian Peng]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Hu Jinfei]'s Articles
[Mu Xingmin]'s Articles
[Tian Peng]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Quantifying the impacts of human activities on runoff and sediment load changes in a Loess Plateau catchment, China.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.