基于MODIS数据的东北亚森林时序变化分析

被引:11
作者
付安民 [1 ,2 ]
孙国清 [1 ,3 ]
过志峰 [1 ]
王殿中 [1 ]
机构
[1] 中国科学院遥感应用研究所遥感科学国家重点实验室
[2] 国家林业局调查规划设计院
[3] Department of Geography,University of Maryland,College
关键词
北方森林; 森林扰动变化; MODIS; TM/ETM+;
D O I
10.13209/j.0479-8023.2010.119
中图分类号
S718.5 [森林生态学]; P237 [测绘遥感技术];
学科分类号
1404 ;
摘要
基于MODIS传感器在2000—2006年观测的MOD13A1影像产品,对东北亚森林的覆盖变化进行了专题分析和制图。一方面,通过生长季节的累加归一化植被指数GNDVI和成对双样本T检验方法,在像素尺度上反映发生变化的强度和显著性特征;另一方面,对地物交错区域的边缘条带进行缓冲区判读分析,去除由于多期影像配准位移所导致的错误判断。然后,利用TM/ETM+影像得到的森林变化图对上述的森林变化检测结果在两个核心区域进行了比较验证。在MOD13A1像素内面积变化5ha以上,且3×3窗口的空间配准尺度下,两区域的森林变化制图精度分别达到了80.24%和88.73%。
引用
收藏
页码:835 / 843
页数:9
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