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《Pratacultural Science》 2008-04
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two digitization methods in measuring grassland area

FAN Yan-min1,WU Hong-qi2,JIN Gui-li1,AN Sha-zhou1(1.College of Grassland Science,Xinjiang Agricultural University,Xinjiang Laboratory of Grassland Resources and Ecology,Urumuqi 830052,China; 2.College of Resource and Environment,Xinjiang Agricultural University,Urumuq 830052,China)  
Scanning digitization and manual trailing digitization were used to measure grassland area.Through analyzing the map synthetically,27 patches were selected to study the precision in measuring area using MapInfo GIS based on patch size and complicacy.The precision of the two methods was compared based on digital planimeter.Results of relative error analysis showed that scanning digitization excelled manual trailing digitization.
【Fund】: 新疆维吾尔自治区科技厅资助项目(200442110);; 新疆维吾尔自治区草地资源与生态重点实验室资助项目(XJDX0201-2005-02)
【CateGory Index】: S812
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