Geo-Environment Vulnerability Assessment of Multiple Geohazards Using VWT-AHP: A Case Study of the Pearl River Delta, China
Geohazards pose significant risks to communities and infrastructure, emphasizing the need for accurate susceptibility assessments to guide land-use planning and hazard management. This study presents a comprehensive method that combines Variable Weight Theory (VWT) with Analytic Hierarchy Process (A...
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MDPI AG
2023-10-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/15/20/5007 |
| _version_ | 1797572420485251072 |
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| author | Peng Huang Xiaoyu Wu Chuanming Ma Aiguo Zhou |
| author_facet | Peng Huang Xiaoyu Wu Chuanming Ma Aiguo Zhou |
| author_sort | Peng Huang |
| collection | DOAJ |
| description | Geohazards pose significant risks to communities and infrastructure, emphasizing the need for accurate susceptibility assessments to guide land-use planning and hazard management. This study presents a comprehensive method that combines Variable Weight Theory (VWT) with Analytic Hierarchy Process (AHP) to assess geo-environment vulnerability based on susceptibility to various geohazards. The method was applied to the Pearl River Delta in China, resulting in the classification of areas into high vulnerability (5961.85 km<sup>2</sup>), medium vulnerability (19,227.93 km<sup>2</sup>), low vulnerability (14,892.02 km<sup>2</sup>), and stable areas (1616.19 km<sup>2</sup>). The findings demonstrate improved accuracy and reliability compared to using AHP alone. ROC curve analysis confirms the enhanced performance of the integrated method, highlighting its effectiveness in discerning susceptibility levels and making informed decisions in hazard preparedness and risk reduction. Additionally, this study assessed the risks posed by geohazards to critical infrastructures, roads, and artificial surfaces, while discussing prevention strategies. However, this study acknowledges certain limitations, including the subjective determination of its judgment matrix and data constraints. Future research could explore the integration of alternative methods to enhance the objectivity of factor weighting. In practical applications, this study contributes to the understanding of geo-environment vulnerability assessments, providing insight into the intricate interplay among geological processes, human activities, and disaster resilience. |
| first_indexed | 2024-03-10T20:56:01Z |
| format | Article |
| id | doaj.art-c7cd9570c46e4bc28ab99aaf017884b9 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T20:56:01Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-c7cd9570c46e4bc28ab99aaf017884b92023-11-19T17:59:30ZengMDPI AGRemote Sensing2072-42922023-10-011520500710.3390/rs15205007Geo-Environment Vulnerability Assessment of Multiple Geohazards Using VWT-AHP: A Case Study of the Pearl River Delta, ChinaPeng Huang0Xiaoyu Wu1Chuanming Ma2Aiguo Zhou3School of Environmental Studies, China University of Geosciences, Wuhan 430000, ChinaSchool of Environmental Studies, China University of Geosciences, Wuhan 430000, ChinaSchool of Environmental Studies, China University of Geosciences, Wuhan 430000, ChinaSchool of Environmental Studies, China University of Geosciences, Wuhan 430000, ChinaGeohazards pose significant risks to communities and infrastructure, emphasizing the need for accurate susceptibility assessments to guide land-use planning and hazard management. This study presents a comprehensive method that combines Variable Weight Theory (VWT) with Analytic Hierarchy Process (AHP) to assess geo-environment vulnerability based on susceptibility to various geohazards. The method was applied to the Pearl River Delta in China, resulting in the classification of areas into high vulnerability (5961.85 km<sup>2</sup>), medium vulnerability (19,227.93 km<sup>2</sup>), low vulnerability (14,892.02 km<sup>2</sup>), and stable areas (1616.19 km<sup>2</sup>). The findings demonstrate improved accuracy and reliability compared to using AHP alone. ROC curve analysis confirms the enhanced performance of the integrated method, highlighting its effectiveness in discerning susceptibility levels and making informed decisions in hazard preparedness and risk reduction. Additionally, this study assessed the risks posed by geohazards to critical infrastructures, roads, and artificial surfaces, while discussing prevention strategies. However, this study acknowledges certain limitations, including the subjective determination of its judgment matrix and data constraints. Future research could explore the integration of alternative methods to enhance the objectivity of factor weighting. In practical applications, this study contributes to the understanding of geo-environment vulnerability assessments, providing insight into the intricate interplay among geological processes, human activities, and disaster resilience.https://www.mdpi.com/2072-4292/15/20/5007geo-environment vulnerabilitygeohazard susceptibilityVWT-AHPPearl River Delta |
| spellingShingle | Peng Huang Xiaoyu Wu Chuanming Ma Aiguo Zhou Geo-Environment Vulnerability Assessment of Multiple Geohazards Using VWT-AHP: A Case Study of the Pearl River Delta, China Remote Sensing geo-environment vulnerability geohazard susceptibility VWT-AHP Pearl River Delta |
| title | Geo-Environment Vulnerability Assessment of Multiple Geohazards Using VWT-AHP: A Case Study of the Pearl River Delta, China |
| title_full | Geo-Environment Vulnerability Assessment of Multiple Geohazards Using VWT-AHP: A Case Study of the Pearl River Delta, China |
| title_fullStr | Geo-Environment Vulnerability Assessment of Multiple Geohazards Using VWT-AHP: A Case Study of the Pearl River Delta, China |
| title_full_unstemmed | Geo-Environment Vulnerability Assessment of Multiple Geohazards Using VWT-AHP: A Case Study of the Pearl River Delta, China |
| title_short | Geo-Environment Vulnerability Assessment of Multiple Geohazards Using VWT-AHP: A Case Study of the Pearl River Delta, China |
| title_sort | geo environment vulnerability assessment of multiple geohazards using vwt ahp a case study of the pearl river delta china |
| topic | geo-environment vulnerability geohazard susceptibility VWT-AHP Pearl River Delta |
| url | https://www.mdpi.com/2072-4292/15/20/5007 |
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