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当前位置: 首页 > 文章 > 1982—2001年间我国受旱和受旱成灾耕地的遥感提取研究 中国农业大学学报 2008,13 (6) 43-48
Position: Home > Articles > Study on remotely sensed drought-stricken and drought-damaged farmland in China during 1982 to 2001 Journal of China Agricultural University 2008,13 (6) 43-48

1982—2001年间我国受旱和受旱成灾耕地的遥感提取研究

作  者：
齐述华;李召良;王长耀
单  位：
中国科学院地理科学与资源研究所/陆地水循环及地表过程重点实验室;遥感科学国家重点实验室中国科学院遥感应用研究所;江西师范大学地理与环境学院
关键词：
水分亏缺指数;遥感;耕地;旱灾;受旱成灾
摘  要：
水分亏缺指数(WDI)是综合陆地表面温度和植被指数建立的区域干旱遥感监测评价指标。本研究利用1982—2001年NOAA AVHRR资料计算了全国20年间各旬WDI,提出基于WDI判断农田受旱及受旱成灾的标准,结合土地覆盖分类提取的耕地范围,提取我国1982—2001年间各年份受旱和受旱成灾耕地面积。结果表明:利用遥感手段提取农田受旱面积具有一定参考价值,遥感获取的农田受旱成灾面积与统计结果基本一致,是快速有效获取干旱成灾范围和成灾面积的方法。
译  名：
Study on remotely sensed drought-stricken and drought-damaged farmland in China during 1982 to 2001
作  者：
QI Shu-hua1,LI Zhao-liang2,WANG Chang-yao3(1.Key Laboratory of Poyang Lake Wetland and Watershed Research,Ministry of Education,Jiangxi Normal University,Nanchang,330022,China;2.Key Lab of Water Cycle and Related Land Surface Processes,Institute of Geographic Science and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China;3.State Key Laboratory ofRemote Sensing Science,Institute of Remote Sensing Applications of Chinese Academy of Sciences,,Beijing 100101,China)
关键词：
water deficit index;remote sensing;farmland;drought;drought-damaged;China
摘  要：
In this paper,Water Deficit Index(WDI) was introduced briefly and was estimated with NOAA-AVHRR 10-day composite dataset of NDVI,CH4 and CH5 light temperature.Based on the 10-day WDI images,the pixels that represent the drought-stricken farmland and the drought-damaged farmland were picked up for each year.Only when more than one decade WDI during crop development period from March to October was greater than 0.7,the pixel was thought as drought-stricken.And more than two continuous decades WDI were greater than 0.75,the pixel was treated as drought-damaged.With the criterion,the drought-stricken and drought-damaged farmland in China was estimated during 1982-2001 with the assistance of farmland distribution map.The comparison between remotely sensed and statistical drought-stricken and drought-damaged farmland areas showed that it is disagreement in the early 1980s,while remotely sensed drought-stricken farmland areas could be reference data and remotely sensed drought-damaged farmland areas were consistent with the statistical data.

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