Projecting the impacts of climate change on streamflow in the upper reaches of the Yangtze River basin

The study of climate change impacts on streamflow in small-middle basins within the Upper Yangtze River Basin (UYRB) is not paid enough attention. This paper projected future streamflow changes in the Laixi River basin (LRB), a small-middle basin in the UYRB, during 2041–2100 under RCP2.6, RCP4.5 an...

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Auteurs principaux:	Danyang Gao, Ting Chen, Kebi Yang, Jiye Zhou, Tianqi Ao
Format:	article
Langue:	EN
Publié:	IWA Publishing 2021
Sujets:	canesm2 laixi river basin sdsm subtropical monsoon humid zone swat Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Accès en ligne:	https://doaj.org/article/e8732d9976b54dffa493de025b80e811
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spelling	oai:doaj.org-article:e8732d9976b54dffa493de025b80e8112021-11-05T19:01:50ZProjecting the impacts of climate change on streamflow in the upper reaches of the Yangtze River basin2040-22442408-935410.2166/wcc.2020.082https://doaj.org/article/e8732d9976b54dffa493de025b80e8112021-08-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/5/1724https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354The study of climate change impacts on streamflow in small-middle basins within the Upper Yangtze River Basin (UYRB) is not paid enough attention. This paper projected future streamflow changes in the Laixi River basin (LRB), a small-middle basin in the UYRB, during 2041–2100 under RCP2.6, RCP4.5 and RCP8.5 by coupling SDSM and SWAT. The results indicate that the temperature and precipitation in the LRB show a fluctuating upward trend, and the change is most severe under RCP8.5. The increase of maximum temperature is larger than that of minimum temperature. The precipitation changes in May to September are relatively greater than in other months, while temperature is the opposite. More importantly, the streamflow is projected to rise gradually during the whole period. Under RCP2.6, increases of streamflow in the 2050s are greater than in the 2080s, while it is the opposite under RCP4.5 and RCP8.5. The increase in high flow from May to August is expected to be significantly higher than the low flow from September to April. Although the study is focused on the LRB, the results gained can provide a reference for other small-middle basins in the UYRB and all basins experiencing subtropical monsoon humid climate. HIGHLIGHTS It is the first study to project climate impacts on streamflow in the Laixi River basin (LRB).; We do not focus on the whole Upper Yangtze River Basin (UYRB) (1,000,000 km2) but pay attention to a small-middle basin (3,240 km2) within it.; We focus on streamflow response in a subtropical monsoon humid climate basin.; This paper coupled SDSM and SWAT.; Comparative analysis of differences between the LRB and the UYRB were discussed.;Danyang GaoTing ChenKebi YangJiye ZhouTianqi AoIWA Publishingarticlecanesm2laixi river basinsdsmsubtropical monsoon humid zoneswatEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 5, Pp 1724-1743 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	canesm2 laixi river basin sdsm subtropical monsoon humid zone swat Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	canesm2 laixi river basin sdsm subtropical monsoon humid zone swat Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Danyang Gao Ting Chen Kebi Yang Jiye Zhou Tianqi Ao Projecting the impacts of climate change on streamflow in the upper reaches of the Yangtze River basin
description	The study of climate change impacts on streamflow in small-middle basins within the Upper Yangtze River Basin (UYRB) is not paid enough attention. This paper projected future streamflow changes in the Laixi River basin (LRB), a small-middle basin in the UYRB, during 2041–2100 under RCP2.6, RCP4.5 and RCP8.5 by coupling SDSM and SWAT. The results indicate that the temperature and precipitation in the LRB show a fluctuating upward trend, and the change is most severe under RCP8.5. The increase of maximum temperature is larger than that of minimum temperature. The precipitation changes in May to September are relatively greater than in other months, while temperature is the opposite. More importantly, the streamflow is projected to rise gradually during the whole period. Under RCP2.6, increases of streamflow in the 2050s are greater than in the 2080s, while it is the opposite under RCP4.5 and RCP8.5. The increase in high flow from May to August is expected to be significantly higher than the low flow from September to April. Although the study is focused on the LRB, the results gained can provide a reference for other small-middle basins in the UYRB and all basins experiencing subtropical monsoon humid climate. HIGHLIGHTS It is the first study to project climate impacts on streamflow in the Laixi River basin (LRB).; We do not focus on the whole Upper Yangtze River Basin (UYRB) (1,000,000 km2) but pay attention to a small-middle basin (3,240 km2) within it.; We focus on streamflow response in a subtropical monsoon humid climate basin.; This paper coupled SDSM and SWAT.; Comparative analysis of differences between the LRB and the UYRB were discussed.;
format	article
author	Danyang Gao Ting Chen Kebi Yang Jiye Zhou Tianqi Ao
author_facet	Danyang Gao Ting Chen Kebi Yang Jiye Zhou Tianqi Ao
author_sort	Danyang Gao
title	Projecting the impacts of climate change on streamflow in the upper reaches of the Yangtze River basin
title_short	Projecting the impacts of climate change on streamflow in the upper reaches of the Yangtze River basin
title_full	Projecting the impacts of climate change on streamflow in the upper reaches of the Yangtze River basin
title_fullStr	Projecting the impacts of climate change on streamflow in the upper reaches of the Yangtze River basin
title_full_unstemmed	Projecting the impacts of climate change on streamflow in the upper reaches of the Yangtze River basin
title_sort	projecting the impacts of climate change on streamflow in the upper reaches of the yangtze river basin
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/e8732d9976b54dffa493de025b80e811
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Projecting the impacts of climate change on streamflow in the upper reaches of the Yangtze River basin

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