Maurille P. S. Lanmandjèkpogni, F. P. Codo, B. Hountondji, B. Yao
{"title":"水环境可达性指数作为城市地表水脆弱性指标——以贝宁奥克帕拉盆地为例","authors":"Maurille P. S. Lanmandjèkpogni, F. P. Codo, B. Hountondji, B. Yao","doi":"10.4236/ojmh.2019.94006","DOIUrl":null,"url":null,"abstract":"Physiographic \ndifferences and conditions of use of water resources in anthropogenic basins \nexplain the variability of risk to surface water. Based on the multi-criteria \nanalysis of Saaty, the present work proposes an assessment of the vulnerability \nof surface water through a three-factor accessibility index: the slope, \nthe subdivision rate and the drainage density of the basin. It is observed that \nthe topographic (slope) and urbanistic (subdivision) conditions are the most \nimportant (weighting of 59%, 34%) in front of the hydrographic condition \n(drainage 6%) with an overall consistency of 2%. Thus, in the Okpara basin in \nthe city of Parakou, the analysis of the vulnerability of surface waters by the \naccessibility index highlights two groups. The \nGanre and Kokouro basins with about 30% of their areas in the low and moderate \nclasses and the Wonka and Dama basins in the very strong class at more than 50% \nof their areas.","PeriodicalId":70695,"journal":{"name":"现代水文学期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2019-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Accessibility Index of Aquatic Environments as an Indicator of Surface Water Vulnerability in Urban Areas: Case of the Okpara Basin (Benin)\",\"authors\":\"Maurille P. S. Lanmandjèkpogni, F. P. Codo, B. Hountondji, B. Yao\",\"doi\":\"10.4236/ojmh.2019.94006\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Physiographic \\ndifferences and conditions of use of water resources in anthropogenic basins \\nexplain the variability of risk to surface water. Based on the multi-criteria \\nanalysis of Saaty, the present work proposes an assessment of the vulnerability \\nof surface water through a three-factor accessibility index: the slope, \\nthe subdivision rate and the drainage density of the basin. It is observed that \\nthe topographic (slope) and urbanistic (subdivision) conditions are the most \\nimportant (weighting of 59%, 34%) in front of the hydrographic condition \\n(drainage 6%) with an overall consistency of 2%. Thus, in the Okpara basin in \\nthe city of Parakou, the analysis of the vulnerability of surface waters by the \\naccessibility index highlights two groups. The \\nGanre and Kokouro basins with about 30% of their areas in the low and moderate \\nclasses and the Wonka and Dama basins in the very strong class at more than 50% \\nof their areas.\",\"PeriodicalId\":70695,\"journal\":{\"name\":\"现代水文学期刊(英文)\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2019-09-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"现代水文学期刊(英文)\",\"FirstCategoryId\":\"1089\",\"ListUrlMain\":\"https://doi.org/10.4236/ojmh.2019.94006\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"现代水文学期刊(英文)","FirstCategoryId":"1089","ListUrlMain":"https://doi.org/10.4236/ojmh.2019.94006","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Accessibility Index of Aquatic Environments as an Indicator of Surface Water Vulnerability in Urban Areas: Case of the Okpara Basin (Benin)
Physiographic
differences and conditions of use of water resources in anthropogenic basins
explain the variability of risk to surface water. Based on the multi-criteria
analysis of Saaty, the present work proposes an assessment of the vulnerability
of surface water through a three-factor accessibility index: the slope,
the subdivision rate and the drainage density of the basin. It is observed that
the topographic (slope) and urbanistic (subdivision) conditions are the most
important (weighting of 59%, 34%) in front of the hydrographic condition
(drainage 6%) with an overall consistency of 2%. Thus, in the Okpara basin in
the city of Parakou, the analysis of the vulnerability of surface waters by the
accessibility index highlights two groups. The
Ganre and Kokouro basins with about 30% of their areas in the low and moderate
classes and the Wonka and Dama basins in the very strong class at more than 50%
of their areas.