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遥感技术与应用  2012, Vol. 27 Issue (1): 128-134    DOI: 10.11873/j.issn.1004-0323.2012.1.128
遥感应用     
内蒙古浑善达克沙地南部草地盖度探测及其变化分析
马娜1,2,刘越1,胡云锋1,张学利2,艳燕1,3
(1.中国科学院地理科学与资源研究所,北京 100101;2.江苏省有色金属华东地质勘查局,江苏 南京 210007;3.内蒙古师范大学地理科学院,内蒙古 呼和浩特 010022)
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)
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摘要:

陆地生态系统植被覆盖程度是评价区域生态环境变化的重要因子。以内蒙古浑善达克沙地南部(锡林郭勒盟正蓝旗北部地区)为研究区,应用中国环境与灾害监测预报小卫星数据HJ-1A CCD及美国陆地卫星数据Landsat TM,分别基于像元二分模型和三波段梯度差模型、使用NDVI和RDVI等参数,对研究区草地植被覆盖度进行了探测,并对比了不同模型方法和参数所得研究区草地植被盖度成果的分类精度。研究结果表明,基于像元二分模型和RDVI参数探测植被盖度的方法表现最好;以此为基础,进一步分析了研究区2000~2009年区域植被覆盖度动态变化,发现本地区在2000年之后草地覆盖改善区面积超过草地盖度下降区面积,浑善达克沙地南缘植被恢复状况总体较好。

 

关键词: 像元二分模型三波段梯度差模型植被覆盖度动态变化浑善达克沙地    
Abstract:

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.

Key words: Fraction dimidiate pixel model    Gradient difference by three-band    Vegetation fraction degree;Dynamic change    Otindag sandy land
收稿日期: 2011-05-17 出版日期: 2012-03-22
:  TP 79  
基金资助:

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)。

通讯作者: 胡云锋(1974-),男,江西赣州人,博士,副研究员,主要从事地理信息技术应用研究。Email:huyf@lreis.ac.cn。   
作者简介: 马娜(1984-),女,山东青岛人,硕士,助理工程师,主要从事GIS与遥感应用研究。Email:mana.zhxl@foxmail.com。
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引用本文:

马娜,刘越,胡云锋,张学利,艳燕. 内蒙古浑善达克沙地南部草地盖度探测及其变化分析[J]. 遥感技术与应用, 2012, 27(1): 128-134.

Ma Na,Liu Yue,Hu Yunfeng,Zhang Xueli,Yan Yan. Detection of Vegetation Coverage and Their Dynamic Changes of Otindag Sandy Land in Inner Mongolia. Remote Sensing Technology and Application, 2012, 27(1): 128-134.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2012.1.128        http://www.rsta.ac.cn/CN/Y2012/V27/I1/128

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