GIS-Based Groundwater Potential Assessment in Varied Topographic Areas of Mianyang City, Southwestern China, Using AHP

Mianyang City is located in the varied topographic areas of Sichuan Province in southwestern China and is characterized by a complex geological background. This area is prone to disasters and its varied topography is inconvenient for emergency water storage and supply. Groundwater is essential for a...

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Autores principales:	Qing Zhang, Shuangxi Zhang, Yu Zhang, Mengkui Li, Yu Wei, Meng Chen, Zeyi Zhang, Zhouqing Dai
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	groundwater potential GIS RS AHP Mianyang City Sichuan of southwestern China Science Q
Acceso en línea:	https://doaj.org/article/5a6107e00905400aae4bbc2e6359a4df
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spelling	oai:doaj.org-article:5a6107e00905400aae4bbc2e6359a4df2021-11-25T18:55:23ZGIS-Based Groundwater Potential Assessment in Varied Topographic Areas of Mianyang City, Southwestern China, Using AHP10.3390/rs132246842072-4292https://doaj.org/article/5a6107e00905400aae4bbc2e6359a4df2021-11-01T00:00:00Zhttps://www.mdpi.com/2072-4292/13/22/4684https://doaj.org/toc/2072-4292Mianyang City is located in the varied topographic areas of Sichuan Province in southwestern China and is characterized by a complex geological background. This area is prone to disasters and its varied topography is inconvenient for emergency water storage and supply. Groundwater is essential for alleviating the demand for water and post-disaster emergency water supply in this area. This study applied AHP to integrate remote sensing, geological and hydrological data into GIS for the assessment of groundwater potential, providing a plan for the rational exploitation of groundwater and post-disaster emergency water supply in the area. Nine factors, including the spring calibration related to groundwater, were integrated by AHP after multicollinear checks. As a result, the geology-controlled groundwater potential map was classified into five levels with equal intervals. All the results were validated using borehole data, indicating the following: the areas with yield rates of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mo><</mo><mn>1</mn><mi mathvariant="normal">t</mi><mo>/</mo><mi mathvariant="normal">d</mi></mrow><mi>·</mi><mi mathvariant="normal">m</mi></mrow></semantics></math></inline-formula>, 1–20 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mi mathvariant="normal">t</mi><mo>/</mo><mi mathvariant="normal">d</mi></mrow><mi>·</mi><mi mathvariant="normal">m</mi></mrow></semantics></math></inline-formula>, and 20–400 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mi mathvariant="normal">t</mi><mo>/</mo><mi mathvariant="normal">d</mi></mrow><mi>·</mi><mi mathvariant="normal">m</mi></mrow></semantics></math></inline-formula> accounted for 2.66%, 36.1%, and 39.62%, respectively, whereas the areas with yield rates of 400–4000 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mi mathvariant="normal">t</mi><mo>/</mo><mi mathvariant="normal">d</mi></mrow><mi>·</mi><mi mathvariant="normal">m</mi></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mo>></mo><mn>4000</mn><mi mathvariant="normal">t</mi><mo>/</mo><mi mathvariant="normal">d</mi></mrow><mi>·</mi><mi mathvariant="normal">m</mi></mrow></semantics></math></inline-formula> accounted for only 20.88% and 0.75% of the overall area. The flexibility of this quick and efficient method enables its application in other regions with a similar geological background.Qing ZhangShuangxi ZhangYu ZhangMengkui LiYu WeiMeng ChenZeyi ZhangZhouqing DaiMDPI AGarticlegroundwater potentialGISRSAHPMianyang CitySichuan of southwestern ChinaScienceQENRemote Sensing, Vol 13, Iss 4684, p 4684 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	groundwater potential GIS RS AHP Mianyang City Sichuan of southwestern China Science Q
spellingShingle	groundwater potential GIS RS AHP Mianyang City Sichuan of southwestern China Science Q Qing Zhang Shuangxi Zhang Yu Zhang Mengkui Li Yu Wei Meng Chen Zeyi Zhang Zhouqing Dai GIS-Based Groundwater Potential Assessment in Varied Topographic Areas of Mianyang City, Southwestern China, Using AHP
description	Mianyang City is located in the varied topographic areas of Sichuan Province in southwestern China and is characterized by a complex geological background. This area is prone to disasters and its varied topography is inconvenient for emergency water storage and supply. Groundwater is essential for alleviating the demand for water and post-disaster emergency water supply in this area. This study applied AHP to integrate remote sensing, geological and hydrological data into GIS for the assessment of groundwater potential, providing a plan for the rational exploitation of groundwater and post-disaster emergency water supply in the area. Nine factors, including the spring calibration related to groundwater, were integrated by AHP after multicollinear checks. As a result, the geology-controlled groundwater potential map was classified into five levels with equal intervals. All the results were validated using borehole data, indicating the following: the areas with yield rates of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mo><</mo><mn>1</mn><mi mathvariant="normal">t</mi><mo>/</mo><mi mathvariant="normal">d</mi></mrow><mi>·</mi><mi mathvariant="normal">m</mi></mrow></semantics></math></inline-formula>, 1–20 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mi mathvariant="normal">t</mi><mo>/</mo><mi mathvariant="normal">d</mi></mrow><mi>·</mi><mi mathvariant="normal">m</mi></mrow></semantics></math></inline-formula>, and 20–400 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mi mathvariant="normal">t</mi><mo>/</mo><mi mathvariant="normal">d</mi></mrow><mi>·</mi><mi mathvariant="normal">m</mi></mrow></semantics></math></inline-formula> accounted for 2.66%, 36.1%, and 39.62%, respectively, whereas the areas with yield rates of 400–4000 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mi mathvariant="normal">t</mi><mo>/</mo><mi mathvariant="normal">d</mi></mrow><mi>·</mi><mi mathvariant="normal">m</mi></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mo>></mo><mn>4000</mn><mi mathvariant="normal">t</mi><mo>/</mo><mi mathvariant="normal">d</mi></mrow><mi>·</mi><mi mathvariant="normal">m</mi></mrow></semantics></math></inline-formula> accounted for only 20.88% and 0.75% of the overall area. The flexibility of this quick and efficient method enables its application in other regions with a similar geological background.
format	article
author	Qing Zhang Shuangxi Zhang Yu Zhang Mengkui Li Yu Wei Meng Chen Zeyi Zhang Zhouqing Dai
author_facet	Qing Zhang Shuangxi Zhang Yu Zhang Mengkui Li Yu Wei Meng Chen Zeyi Zhang Zhouqing Dai
author_sort	Qing Zhang
title	GIS-Based Groundwater Potential Assessment in Varied Topographic Areas of Mianyang City, Southwestern China, Using AHP
title_short	GIS-Based Groundwater Potential Assessment in Varied Topographic Areas of Mianyang City, Southwestern China, Using AHP
title_full	GIS-Based Groundwater Potential Assessment in Varied Topographic Areas of Mianyang City, Southwestern China, Using AHP
title_fullStr	GIS-Based Groundwater Potential Assessment in Varied Topographic Areas of Mianyang City, Southwestern China, Using AHP
title_full_unstemmed	GIS-Based Groundwater Potential Assessment in Varied Topographic Areas of Mianyang City, Southwestern China, Using AHP
title_sort	gis-based groundwater potential assessment in varied topographic areas of mianyang city, southwestern china, using ahp
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5a6107e00905400aae4bbc2e6359a4df
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GIS-Based Groundwater Potential Assessment in Varied Topographic Areas of Mianyang City, Southwestern China, Using AHP

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