Ecological risks of geological disasters and the patterns of the urban agglomeration in the Fujian Delta region

Geological disasters not only hinder the ecological security guarantee in urban agglomerations, but also pose serious threat to the life and property of residents in the areas. The study establishes a “hazard-vulnerability-exposure” three-dimensional ecological risk assessment model, adopts an infor...

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Autores principales:	Jinhuang Lin, Mingshui Lin, Wenhui Chen, An Zhang, Xinhua Qi, Haoran Hou
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Information value model Geological disasters Ecological risks urban agglomeration in the Fujian Delta region Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/7ada039ee0bf42059e247f1c95a24214
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spelling	oai:doaj.org-article:7ada039ee0bf42059e247f1c95a242142021-12-01T04:46:59ZEcological risks of geological disasters and the patterns of the urban agglomeration in the Fujian Delta region1470-160X10.1016/j.ecolind.2021.107475https://doaj.org/article/7ada039ee0bf42059e247f1c95a242142021-06-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21001400https://doaj.org/toc/1470-160XGeological disasters not only hinder the ecological security guarantee in urban agglomerations, but also pose serious threat to the life and property of residents in the areas. The study establishes a “hazard-vulnerability-exposure” three-dimensional ecological risk assessment model, adopts an information value model to assess hazard, use landscape indices to analyze vulnerability and nighttime light data to indicate population exposure, and then quantitatively assesses the watershed-scale ecological risks of geological disasters and their patterns. The results show that ecological risks of geological disasters are mainly medium risks, presenting the trend of weakening from southeastern coastal areas to northwestern inland areas. The ecological risks exist in eight patterns in combination of the three dimensions of hazard, vulnerability and exposure. The elevation of 600–800 m, slope of 5 ~ 15°, aspect as southwest, NDVI of 0.4–0.6, lithology of metamorphic rocks, land use type as farmland, multi-year average precipitation of >1600 mm, distance to river of less than 200 m and distance to fault of less than 1000 m are the combination of greater likelihood of inducing geological disasters. The study finds that ecological risks of geological disasters show the trend of high in the southeast and low in the northwest and are the highest under combination of the high vulnerability and high exposure pattern out of the eight patterns that are predominated by high population exposure. In addition, the study discovers the combination of greater likelihood of inducing geological disasters, and puts forward the prevention and control measures against geological disasters in the future.Jinhuang LinMingshui LinWenhui ChenAn ZhangXinhua QiHaoran HouElsevierarticleInformation value modelGeological disastersEcological risksurban agglomeration in the Fujian Delta regionEcologyQH540-549.5ENEcological Indicators, Vol 125, Iss , Pp 107475- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Information value model Geological disasters Ecological risks urban agglomeration in the Fujian Delta region Ecology QH540-549.5
spellingShingle	Information value model Geological disasters Ecological risks urban agglomeration in the Fujian Delta region Ecology QH540-549.5 Jinhuang Lin Mingshui Lin Wenhui Chen An Zhang Xinhua Qi Haoran Hou Ecological risks of geological disasters and the patterns of the urban agglomeration in the Fujian Delta region
description	Geological disasters not only hinder the ecological security guarantee in urban agglomerations, but also pose serious threat to the life and property of residents in the areas. The study establishes a “hazard-vulnerability-exposure” three-dimensional ecological risk assessment model, adopts an information value model to assess hazard, use landscape indices to analyze vulnerability and nighttime light data to indicate population exposure, and then quantitatively assesses the watershed-scale ecological risks of geological disasters and their patterns. The results show that ecological risks of geological disasters are mainly medium risks, presenting the trend of weakening from southeastern coastal areas to northwestern inland areas. The ecological risks exist in eight patterns in combination of the three dimensions of hazard, vulnerability and exposure. The elevation of 600–800 m, slope of 5 ~ 15°, aspect as southwest, NDVI of 0.4–0.6, lithology of metamorphic rocks, land use type as farmland, multi-year average precipitation of >1600 mm, distance to river of less than 200 m and distance to fault of less than 1000 m are the combination of greater likelihood of inducing geological disasters. The study finds that ecological risks of geological disasters show the trend of high in the southeast and low in the northwest and are the highest under combination of the high vulnerability and high exposure pattern out of the eight patterns that are predominated by high population exposure. In addition, the study discovers the combination of greater likelihood of inducing geological disasters, and puts forward the prevention and control measures against geological disasters in the future.
format	article
author	Jinhuang Lin Mingshui Lin Wenhui Chen An Zhang Xinhua Qi Haoran Hou
author_facet	Jinhuang Lin Mingshui Lin Wenhui Chen An Zhang Xinhua Qi Haoran Hou
author_sort	Jinhuang Lin
title	Ecological risks of geological disasters and the patterns of the urban agglomeration in the Fujian Delta region
title_short	Ecological risks of geological disasters and the patterns of the urban agglomeration in the Fujian Delta region
title_full	Ecological risks of geological disasters and the patterns of the urban agglomeration in the Fujian Delta region
title_fullStr	Ecological risks of geological disasters and the patterns of the urban agglomeration in the Fujian Delta region
title_full_unstemmed	Ecological risks of geological disasters and the patterns of the urban agglomeration in the Fujian Delta region
title_sort	ecological risks of geological disasters and the patterns of the urban agglomeration in the fujian delta region
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/7ada039ee0bf42059e247f1c95a24214
work_keys_str_mv	AT jinhuanglin ecologicalrisksofgeologicaldisastersandthepatternsoftheurbanagglomerationinthefujiandeltaregion AT mingshuilin ecologicalrisksofgeologicaldisastersandthepatternsoftheurbanagglomerationinthefujiandeltaregion AT wenhuichen ecologicalrisksofgeologicaldisastersandthepatternsoftheurbanagglomerationinthefujiandeltaregion AT anzhang ecologicalrisksofgeologicaldisastersandthepatternsoftheurbanagglomerationinthefujiandeltaregion AT xinhuaqi ecologicalrisksofgeologicaldisastersandthepatternsoftheurbanagglomerationinthefujiandeltaregion AT haoranhou ecologicalrisksofgeologicaldisastersandthepatternsoftheurbanagglomerationinthefujiandeltaregion
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Ecological risks of geological disasters and the patterns of the urban agglomeration in the Fujian Delta region

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