Trend and attribution analysis of water and sediment variations in sandy rivers

Human activities and climate change have led to significant changes in the flow and sediment of sandy rivers in northern China. The key work to reveal the changes of river water and sediment conditions is to quantitatively study the changes of precipitation, water and soil conservation in river basi...

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Autores principales:	Dangwei Wang, Junhong Zhang, Anjun Deng, Yong Jin, Tianjie Lei, Yuhai Wang
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	attribution analysis changing trend sediment retention water and soil conservation yongding river Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/45f5c540432246488105b5171a8a16a2
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id	oai:doaj.org-article:45f5c540432246488105b5171a8a16a2
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spelling	oai:doaj.org-article:45f5c540432246488105b5171a8a16a22021-11-23T18:56:51ZTrend and attribution analysis of water and sediment variations in sandy rivers1606-97491607-079810.2166/ws.2021.147https://doaj.org/article/45f5c540432246488105b5171a8a16a22021-11-01T00:00:00Zhttp://ws.iwaponline.com/content/21/7/3810https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Human activities and climate change have led to significant changes in the flow and sediment of sandy rivers in northern China. The key work to reveal the changes of river water and sediment conditions is to quantitatively study the changes of precipitation, water and soil conservation in river basins, and the effect of reservoirs on sediment containment. Taking the Yongding River as a case study, we analyze the changing trend of the water and sediment into the Yongding River and find that their amount has greatly decreased. In particular, the sediment yield has decreased by more than 90% and its trend has changed, and the turning point occurred in the 1980s. Based on the statistical data analysis model, the influences of human activities on the sediment inflow of the Guanting Reservoir were quantitatively evaluated. The results show that sand retention of the upper cascade reservoirs is the main reason for the sharp reduction in sediment loads, but the sand retention effect of reservoirs has a certain time limit. Water and soil conservation played a vital role in the sediment loads reduction during the present stage. The present studies may provide insights into understanding the integrated reclamation of the river basin. HIGHLIGHTS Influences evaluation of human activities on water and sediment transport.; Reservoir regulation Influences were found evident only before sedimentation balance.; Erosion and torrent control works were found as the principal cause of recent hydrological variations.; Time-effect of different factors on hydrological changes was evaluated.; Ecological restoration was considered as a sustainable sediment reduction measure.;Dangwei WangJunhong ZhangAnjun DengYong JinTianjie LeiYuhai WangIWA Publishingarticleattribution analysischanging trendsediment retentionwater and soil conservationyongding riverWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 7, Pp 3810-3824 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	attribution analysis changing trend sediment retention water and soil conservation yongding river Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	attribution analysis changing trend sediment retention water and soil conservation yongding river Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Dangwei Wang Junhong Zhang Anjun Deng Yong Jin Tianjie Lei Yuhai Wang Trend and attribution analysis of water and sediment variations in sandy rivers
description	Human activities and climate change have led to significant changes in the flow and sediment of sandy rivers in northern China. The key work to reveal the changes of river water and sediment conditions is to quantitatively study the changes of precipitation, water and soil conservation in river basins, and the effect of reservoirs on sediment containment. Taking the Yongding River as a case study, we analyze the changing trend of the water and sediment into the Yongding River and find that their amount has greatly decreased. In particular, the sediment yield has decreased by more than 90% and its trend has changed, and the turning point occurred in the 1980s. Based on the statistical data analysis model, the influences of human activities on the sediment inflow of the Guanting Reservoir were quantitatively evaluated. The results show that sand retention of the upper cascade reservoirs is the main reason for the sharp reduction in sediment loads, but the sand retention effect of reservoirs has a certain time limit. Water and soil conservation played a vital role in the sediment loads reduction during the present stage. The present studies may provide insights into understanding the integrated reclamation of the river basin. HIGHLIGHTS Influences evaluation of human activities on water and sediment transport.; Reservoir regulation Influences were found evident only before sedimentation balance.; Erosion and torrent control works were found as the principal cause of recent hydrological variations.; Time-effect of different factors on hydrological changes was evaluated.; Ecological restoration was considered as a sustainable sediment reduction measure.;
format	article
author	Dangwei Wang Junhong Zhang Anjun Deng Yong Jin Tianjie Lei Yuhai Wang
author_facet	Dangwei Wang Junhong Zhang Anjun Deng Yong Jin Tianjie Lei Yuhai Wang
author_sort	Dangwei Wang
title	Trend and attribution analysis of water and sediment variations in sandy rivers
title_short	Trend and attribution analysis of water and sediment variations in sandy rivers
title_full	Trend and attribution analysis of water and sediment variations in sandy rivers
title_fullStr	Trend and attribution analysis of water and sediment variations in sandy rivers
title_full_unstemmed	Trend and attribution analysis of water and sediment variations in sandy rivers
title_sort	trend and attribution analysis of water and sediment variations in sandy rivers
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/45f5c540432246488105b5171a8a16a2
work_keys_str_mv	AT dangweiwang trendandattributionanalysisofwaterandsedimentvariationsinsandyrivers AT junhongzhang trendandattributionanalysisofwaterandsedimentvariationsinsandyrivers AT anjundeng trendandattributionanalysisofwaterandsedimentvariationsinsandyrivers AT yongjin trendandattributionanalysisofwaterandsedimentvariationsinsandyrivers AT tianjielei trendandattributionanalysisofwaterandsedimentvariationsinsandyrivers AT yuhaiwang trendandattributionanalysisofwaterandsedimentvariationsinsandyrivers
_version_	1718416150861185024

Trend and attribution analysis of water and sediment variations in sandy rivers

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