The variation and attribution analysis of the runoff and sediment in the lower reach of the Yellow River during the past 60 years

The water and sediment regimes of the Yellow River are the basis of decision-making of major projects of the Yellow River. Based on water and sediment data at the Huayuankou station, Gaocun station, Aishan station, and Lijin station in the lower reach of the Yellow River, the Mann–Kendall test, the...

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Autores principales:	Hongxiang Wang, Jinghang Liu, Wenxian Guo
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	human activities runoff sediment load yellow 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/a9a691118a134dd8b69be169972bdfd3
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spelling	oai:doaj.org-article:a9a691118a134dd8b69be169972bdfd32021-11-06T10:08:55ZThe variation and attribution analysis of the runoff and sediment in the lower reach of the Yellow River during the past 60 years1606-97491607-079810.2166/ws.2021.085https://doaj.org/article/a9a691118a134dd8b69be169972bdfd32021-09-01T00:00:00Zhttp://ws.iwaponline.com/content/21/6/3193https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798The water and sediment regimes of the Yellow River are the basis of decision-making of major projects of the Yellow River. Based on water and sediment data at the Huayuankou station, Gaocun station, Aishan station, and Lijin station in the lower reach of the Yellow River, the Mann–Kendall test, the T-test for differences, wavelet analysis, slope change ratio method and the double cumulative curve method were applied to analyze the runoff and sediment regime alteration. The results show that the water and sediment of the lower Yellow River have a significant downward trend, and the annual sediment decreases significantly compared with the annual runoff. The annual runoff and sediment of the four hydrological stations changed around the 1980s and 1990s, respectively. The water and sediment of hydrological stations have periodic variations on multiple time-scales, but the variation scales are different. Precipitation, human activities and other factors lead to the decreasing trend of water and sediment in the lower Yellow River, and their contribution rates to the change of water and sediment are also different. Precipitation contributed 0.15%–8.71% and 0.06%–22.32% to the reduction of runoff and sediment load at the hydrological stations, while human activities contributed 91.29%–99.85% and 77.68%–102.21% to the reduction of runoff and sediment load, respectively. Human activity is the main factor in runoff and sediment reduction. HIGHLIGHTS To statistically detect the trend, change-points and periodic relationship of the annual runoff and sediment discharge of the four main hydrological stations on the lower Yellow River.; To analyze the contribution of climate change and human activities to runoff and sediment in the lower reaches of the Yellow River basin.;Hongxiang WangJinghang LiuWenxian GuoIWA Publishingarticlehuman activitiesrunoffsediment loadyellow riverWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 6, Pp 3193-3209 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	human activities runoff sediment load yellow river Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	human activities runoff sediment load yellow river Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Hongxiang Wang Jinghang Liu Wenxian Guo The variation and attribution analysis of the runoff and sediment in the lower reach of the Yellow River during the past 60 years
description	The water and sediment regimes of the Yellow River are the basis of decision-making of major projects of the Yellow River. Based on water and sediment data at the Huayuankou station, Gaocun station, Aishan station, and Lijin station in the lower reach of the Yellow River, the Mann–Kendall test, the T-test for differences, wavelet analysis, slope change ratio method and the double cumulative curve method were applied to analyze the runoff and sediment regime alteration. The results show that the water and sediment of the lower Yellow River have a significant downward trend, and the annual sediment decreases significantly compared with the annual runoff. The annual runoff and sediment of the four hydrological stations changed around the 1980s and 1990s, respectively. The water and sediment of hydrological stations have periodic variations on multiple time-scales, but the variation scales are different. Precipitation, human activities and other factors lead to the decreasing trend of water and sediment in the lower Yellow River, and their contribution rates to the change of water and sediment are also different. Precipitation contributed 0.15%–8.71% and 0.06%–22.32% to the reduction of runoff and sediment load at the hydrological stations, while human activities contributed 91.29%–99.85% and 77.68%–102.21% to the reduction of runoff and sediment load, respectively. Human activity is the main factor in runoff and sediment reduction. HIGHLIGHTS To statistically detect the trend, change-points and periodic relationship of the annual runoff and sediment discharge of the four main hydrological stations on the lower Yellow River.; To analyze the contribution of climate change and human activities to runoff and sediment in the lower reaches of the Yellow River basin.;
format	article
author	Hongxiang Wang Jinghang Liu Wenxian Guo
author_facet	Hongxiang Wang Jinghang Liu Wenxian Guo
author_sort	Hongxiang Wang
title	The variation and attribution analysis of the runoff and sediment in the lower reach of the Yellow River during the past 60 years
title_short	The variation and attribution analysis of the runoff and sediment in the lower reach of the Yellow River during the past 60 years
title_full	The variation and attribution analysis of the runoff and sediment in the lower reach of the Yellow River during the past 60 years
title_fullStr	The variation and attribution analysis of the runoff and sediment in the lower reach of the Yellow River during the past 60 years
title_full_unstemmed	The variation and attribution analysis of the runoff and sediment in the lower reach of the Yellow River during the past 60 years
title_sort	variation and attribution analysis of the runoff and sediment in the lower reach of the yellow river during the past 60 years
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/a9a691118a134dd8b69be169972bdfd3
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The variation and attribution analysis of the runoff and sediment in the lower reach of the Yellow River during the past 60 years

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