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《Remote Sensing Technology and Application》 2012-01
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Detection of Vegetation Coverage and Their Dynamic Changes of Otindag Sandy Land in Inner Mongolia

Ma Na1,2,Liu Yue1,Hu Yunfeng1,Zhang Xueli2,Yan Yan1,3(1.Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences, Beijing 100101,China;2.East China Bureau of Geology for Non-ferrous Metals,Nanjing 210007,China; 3.College of Geography Science,Inner Mongolia Normal University,Hohhot 010022,China)  
The vegetation cover is an important factor to evaluate the regional ecological environment in the terrestrial ecosystem.In this study,we detected the vegetation coverage,using Chinese Environment and Disaster Monitoring and Forecasting Satellite(HJ-1A CCD) and Landsat TM data,applying the models of Gradient Difference by Three-band modol and Fraction Dimidiate Pixel Model with parameters of NDVI and RDVI.Through comparing the accuracy of the classification results respectively by different models and different paraments,we discovered that the Fraction Dimidiate Pixel Model with RDVI got the best effect.In view of this,we analyzed the dynamic changes of the vegetation coverage between 2000~2009 in the study area,then pointed out that the vegetation recover is well.
【Fund】: 国家自然科学基金项目(40971223);; 中国科学院知识创新方向性项目(KZCX2-EW-306);; 科技部科技支撑项目(2008BAH31B04);; 国家973计划项目(2010CB950904)
【CateGory Index】: S812;TP79
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