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Assessment of Waterlogging Risk in Lixiahe Region of Jiangsu Province Based on AVHRR and MODIS Image

查看全文 作　　者：HUANG [1,2]Dapeng;LIU [1]Chuang;FANG [1]Huajun;PENG [3]Shunfeng 高影响力作者 机构地区：[1]Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;[2]Graduate University of the Chinese Academy of Sciences, Beijing 100049, China;[3]Huaihe River Commission, Ministry of Water Resources, P. R. China, Bengbu 233001, China高影响力机构 出　　处：《Chinese Geographical Science》索引2008年第18卷第2期,共6页高影响力期刊 基　　金：Under the auspices of Ministry of Water Resources, P. R. China (No. [2001]29) 摘　　要：Four images of 1991 AVHRR, 2003 and 2007 MODIS were used to extract waterlogging inundated water of three years, and three inundated water maps were overlaid to estimate waterlogging affected frequency. Based on wa-terlogging affected frequency, waterlogging hazard of pixel scale was assessed. According to the weighed score of area percentage of different waterlogging affected frequency in 13 counties/cities of Lixiahe region, waterlogging hazard rank of every county/city was assessed. Waterlogging affected frequency map and 1km×1km grid landuse map were used to assess waterlogging risk of pixel scale; and then waterlogging risk rank of every county/city was assessed by the similar method by which waterlogging hazard rank of every county/city was assessed. High risk region is located mainly in core zone of Lixiahe hinterland, medium risk region is adjacent to high risk region, and low risk region is located in the most outlying area of risk zone and mainly in south to middle part of Lixiahe region. Xinghua and Gaoyou belong to high risk city, Jiangyan belongs to medium risk city, and the other counties/cities have low or lower waterlogging risk. The method of assessing waterlogging risk in this paper is simple and applicable. This paper can provide guidance for the waterlogging risk analysis in broader area of Huaihe River Basin. 关 键 词：涝灾 江苏 预防措施 数据分析
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