Combined Impacts of Climate and Land Use Changes on Long-Term Streamflow in the Upper Halda Basin, Bangladesh

In Bangladesh, rapid population growth and associated land-use changes are escalating water scarcity issues, which will be further exacerbated under ongoing climate change. As such, predicting the consequences of climate and land-use change on freshwater supplies is critical for the sustainable mana...

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Autores principales:	Farzana Raihan, Gabrijel Ondrasek, Mohammad Shahidul Islam, Joseph M. Maina, Linda J. Beaumont
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	Halda Basin hydrology climate change land-use change land cover change SWAT model Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/88666cf860894441936b138a193657ea
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id	oai:doaj.org-article:88666cf860894441936b138a193657ea
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spelling	oai:doaj.org-article:88666cf860894441936b138a193657ea2021-11-11T19:43:31ZCombined Impacts of Climate and Land Use Changes on Long-Term Streamflow in the Upper Halda Basin, Bangladesh10.3390/su1321120672071-1050https://doaj.org/article/88666cf860894441936b138a193657ea2021-11-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/21/12067https://doaj.org/toc/2071-1050In Bangladesh, rapid population growth and associated land-use changes are escalating water scarcity issues, which will be further exacerbated under ongoing climate change. As such, predicting the consequences of climate and land-use change on freshwater supplies is critical for the sustainable management of water resources. In this study, a Soil and Water Assessment Tool (SWAT) associated with a Land Cover Model (LCM) were used to simulate long-term stream flows in the Halda Basin, Bangladesh, under baseline and future climate and land-use change scenarios. In addition, the separate and combined impacts of both types of change on long-term streamflow projections were assessed. Results indicate that by the 2060s, the maximum temperature of the Halda Basin may rise by 1.6 °C in comparison to the baseline 1986–2005 period, while minimum temperature will also increase, albeit at a lower rate than maximum temperature. Precipitation during the dry season is expected to increase, although it may decline in the monsoon period. Simulations show that these changes in climate are likely to increase future streamflow in the Halda catchment, with monthly streamflow influenced mainly by the variability in precipitation. The LCM projected decreases in grassland along with cultivated land at the expense of artificial areas. Combined, future climate and land-use changes are projected to increase annual streamflow, with climate change likely to be a greater driver of altered streamflow than land-use changes. Our results should guide environmental management authorities in more sustainable and strategic water resource planning under global climate change.Farzana RaihanGabrijel OndrasekMohammad Shahidul IslamJoseph M. MainaLinda J. BeaumontMDPI AGarticleHalda Basinhydrologyclimate changeland-use changeland cover changeSWAT modelEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 12067, p 12067 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Halda Basin hydrology climate change land-use change land cover change SWAT model Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
spellingShingle	Halda Basin hydrology climate change land-use change land cover change SWAT model Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Farzana Raihan Gabrijel Ondrasek Mohammad Shahidul Islam Joseph M. Maina Linda J. Beaumont Combined Impacts of Climate and Land Use Changes on Long-Term Streamflow in the Upper Halda Basin, Bangladesh
description	In Bangladesh, rapid population growth and associated land-use changes are escalating water scarcity issues, which will be further exacerbated under ongoing climate change. As such, predicting the consequences of climate and land-use change on freshwater supplies is critical for the sustainable management of water resources. In this study, a Soil and Water Assessment Tool (SWAT) associated with a Land Cover Model (LCM) were used to simulate long-term stream flows in the Halda Basin, Bangladesh, under baseline and future climate and land-use change scenarios. In addition, the separate and combined impacts of both types of change on long-term streamflow projections were assessed. Results indicate that by the 2060s, the maximum temperature of the Halda Basin may rise by 1.6 °C in comparison to the baseline 1986–2005 period, while minimum temperature will also increase, albeit at a lower rate than maximum temperature. Precipitation during the dry season is expected to increase, although it may decline in the monsoon period. Simulations show that these changes in climate are likely to increase future streamflow in the Halda catchment, with monthly streamflow influenced mainly by the variability in precipitation. The LCM projected decreases in grassland along with cultivated land at the expense of artificial areas. Combined, future climate and land-use changes are projected to increase annual streamflow, with climate change likely to be a greater driver of altered streamflow than land-use changes. Our results should guide environmental management authorities in more sustainable and strategic water resource planning under global climate change.
format	article
author	Farzana Raihan Gabrijel Ondrasek Mohammad Shahidul Islam Joseph M. Maina Linda J. Beaumont
author_facet	Farzana Raihan Gabrijel Ondrasek Mohammad Shahidul Islam Joseph M. Maina Linda J. Beaumont
author_sort	Farzana Raihan
title	Combined Impacts of Climate and Land Use Changes on Long-Term Streamflow in the Upper Halda Basin, Bangladesh
title_short	Combined Impacts of Climate and Land Use Changes on Long-Term Streamflow in the Upper Halda Basin, Bangladesh
title_full	Combined Impacts of Climate and Land Use Changes on Long-Term Streamflow in the Upper Halda Basin, Bangladesh
title_fullStr	Combined Impacts of Climate and Land Use Changes on Long-Term Streamflow in the Upper Halda Basin, Bangladesh
title_full_unstemmed	Combined Impacts of Climate and Land Use Changes on Long-Term Streamflow in the Upper Halda Basin, Bangladesh
title_sort	combined impacts of climate and land use changes on long-term streamflow in the upper halda basin, bangladesh
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/88666cf860894441936b138a193657ea
work_keys_str_mv	AT farzanaraihan combinedimpactsofclimateandlandusechangesonlongtermstreamflowintheupperhaldabasinbangladesh AT gabrijelondrasek combinedimpactsofclimateandlandusechangesonlongtermstreamflowintheupperhaldabasinbangladesh AT mohammadshahidulislam combinedimpactsofclimateandlandusechangesonlongtermstreamflowintheupperhaldabasinbangladesh AT josephmmaina combinedimpactsofclimateandlandusechangesonlongtermstreamflowintheupperhaldabasinbangladesh AT lindajbeaumont combinedimpactsofclimateandlandusechangesonlongtermstreamflowintheupperhaldabasinbangladesh
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Combined Impacts of Climate and Land Use Changes on Long-Term Streamflow in the Upper Halda Basin, Bangladesh

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