鄱阳湖区洪灾风险与农户脆弱性分析(英文)

编号 zgly0001586619

文献类型 期刊论文

文献题名 鄱阳湖区洪灾风险与农户脆弱性分析(英文)

作者 马定国  陈洁  张文江  郑林  刘影 

作者单位 InstituteofGeographicSciencesandNaturalResourcesResearchCAS  CollegeofGeography&Environment  JiangxiNormalUniversity  InstituteofGeographicSciencesandNaturalResourcesResearch  CAS  Beijing100101  ChinaCollegeofGeography&Environm 

母体文献 Journal of Geographical Sciences 

年卷期 2007年03期

年份 2007 

分类号 X43 

关键词 floodrisk  farmer  vulnerability  PoyangLakeRegion 

文摘内容 This paper quantitatively explores farmers’ vulnerability to flood in the Poyang Lake Region (PLR) with the supports of GIS spatial functions. The analysis consists of three major steps,which is based on the spatial unit of township. Firstly,the spatial extent and charac-teristics of flood risk areas were determined using a digital elevation model (DEM) derived from the 1:50,000 topographic map. Secondly,for each of the township,six indices indicating the economic activities of local farmers were calculated. These indices are: rural population proportion,cultivated land proportion,GDP per unit area,employment proportion of primary industry,net rural income per capita and agricultural income proportion. These six indices were then normalized and used for later vulnerability assessment. Thirdly,the normalized indices (as GIS data layers) were overlaid with the flood risk areas to produce the risk coeffi-cient for each township and to calculate the overall vulnerability for each township. The analysis results show that in the PLR there are high flood risk areas where the farmers’ livings are seriously influenced or threatened. About 55.56% of the total 180 townships in the flood risk areas have a high degree of flood vulnerability. The townships under flood risk are mainly distributed in the areas around the Poyang Lake and the areas along the five rivers.