Runoff sensitivity to climate and land-use changes: A case study in the Longtan basin, Southwestern China

Based on the scenario hypothesis method, this paper applied a Soil and Water Assessment Tool (SWAT) to analyze the sensitivity of runoff to climate and land-use changes in the Longtan basin, China. Results indicated that (1) for every 1 °C increase in temperature, the average annual runoff decreased...

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Autores principales:	Guiyan Mo, Ya Huang, Qing Yang, Dayang Wang, Chongxun Mo
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	climate change land-use change longtan basin sensitivity swat model Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/07cf703f870a4ecfb00e0667e25a4212
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spelling	oai:doaj.org-article:07cf703f870a4ecfb00e0667e25a42122021-11-05T18:52:08ZRunoff sensitivity to climate and land-use changes: A case study in the Longtan basin, Southwestern China2040-22442408-935410.2166/wcc.2020.196https://doaj.org/article/07cf703f870a4ecfb00e0667e25a42122021-06-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/4/1059https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354Based on the scenario hypothesis method, this paper applied a Soil and Water Assessment Tool (SWAT) to analyze the sensitivity of runoff to climate and land-use changes in the Longtan basin, China. Results indicated that (1) for every 1 °C increase in temperature, the average annual runoff decreased by 9.9 mm, and the average annual evaporation increased by 9.3 mm. However, for every 10% increase in rainfall, the average annual runoff and evapotranspiration increased by 96.3 mm and 11.53 mm, respectively. Obviously, runoff was more sensitive to the change in rainfall than temperature in the Longtan basin. Meanwhile, (2) forestland could conserve water resources, but its water consumption was larger. Although grassland played a relatively small role in water conservation, it consumed less water. At the same time, increasing the area of forestland and grassland could weaken peak floods, and the water retention function of vegetation could prevent runoff from increasing and decreasing steeply. Therefore, it is worth improving vegetation coverage. HIGHLIGHTS Constructing 25 climate change scenarios based on CMIP5 simulation results and local temporal and spatial variation characteristics.; Constructing 4 land-use scenarios based on its variation characteristics and local development plan.; Simulating and quantifying runoff response to different climate and land-use change scenarios.; Identifying the major impact factors for runoff variability.; Experiment in the karstic basin, where there is a lack of related research.;Guiyan MoYa HuangQing YangDayang WangChongxun MoIWA Publishingarticleclimate changeland-use changelongtan basinsensitivityswat modelEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 4, Pp 1059-1070 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	climate change land-use change longtan basin sensitivity swat model Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	climate change land-use change longtan basin sensitivity swat model Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Guiyan Mo Ya Huang Qing Yang Dayang Wang Chongxun Mo Runoff sensitivity to climate and land-use changes: A case study in the Longtan basin, Southwestern China
description	Based on the scenario hypothesis method, this paper applied a Soil and Water Assessment Tool (SWAT) to analyze the sensitivity of runoff to climate and land-use changes in the Longtan basin, China. Results indicated that (1) for every 1 °C increase in temperature, the average annual runoff decreased by 9.9 mm, and the average annual evaporation increased by 9.3 mm. However, for every 10% increase in rainfall, the average annual runoff and evapotranspiration increased by 96.3 mm and 11.53 mm, respectively. Obviously, runoff was more sensitive to the change in rainfall than temperature in the Longtan basin. Meanwhile, (2) forestland could conserve water resources, but its water consumption was larger. Although grassland played a relatively small role in water conservation, it consumed less water. At the same time, increasing the area of forestland and grassland could weaken peak floods, and the water retention function of vegetation could prevent runoff from increasing and decreasing steeply. Therefore, it is worth improving vegetation coverage. HIGHLIGHTS Constructing 25 climate change scenarios based on CMIP5 simulation results and local temporal and spatial variation characteristics.; Constructing 4 land-use scenarios based on its variation characteristics and local development plan.; Simulating and quantifying runoff response to different climate and land-use change scenarios.; Identifying the major impact factors for runoff variability.; Experiment in the karstic basin, where there is a lack of related research.;
format	article
author	Guiyan Mo Ya Huang Qing Yang Dayang Wang Chongxun Mo
author_facet	Guiyan Mo Ya Huang Qing Yang Dayang Wang Chongxun Mo
author_sort	Guiyan Mo
title	Runoff sensitivity to climate and land-use changes: A case study in the Longtan basin, Southwestern China
title_short	Runoff sensitivity to climate and land-use changes: A case study in the Longtan basin, Southwestern China
title_full	Runoff sensitivity to climate and land-use changes: A case study in the Longtan basin, Southwestern China
title_fullStr	Runoff sensitivity to climate and land-use changes: A case study in the Longtan basin, Southwestern China
title_full_unstemmed	Runoff sensitivity to climate and land-use changes: A case study in the Longtan basin, Southwestern China
title_sort	runoff sensitivity to climate and land-use changes: a case study in the longtan basin, southwestern china
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/07cf703f870a4ecfb00e0667e25a4212
work_keys_str_mv	AT guiyanmo runoffsensitivitytoclimateandlandusechangesacasestudyinthelongtanbasinsouthwesternchina AT yahuang runoffsensitivitytoclimateandlandusechangesacasestudyinthelongtanbasinsouthwesternchina AT qingyang runoffsensitivitytoclimateandlandusechangesacasestudyinthelongtanbasinsouthwesternchina AT dayangwang runoffsensitivitytoclimateandlandusechangesacasestudyinthelongtanbasinsouthwesternchina AT chongxunmo runoffsensitivitytoclimateandlandusechangesacasestudyinthelongtanbasinsouthwesternchina
_version_	1718444081249517568

Runoff sensitivity to climate and land-use changes: A case study in the Longtan basin, Southwestern China

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