| 一种利用多时相TM影像分析地表植被变化的新方法：——以敦煌地区绿洲植 … |
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| 引用本文： | 李本纲,陶澍.一种利用多时相TM影像分析地表植被变化的新方法：——以敦煌地区绿洲植 …[J].遥感学报,2000,4(4):295-298. |
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| 作者姓名： | 李本纲 陶澍 |
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| 作者单位： | 北京大学城市与环境学系,北京 |
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| 基金项目： | 国家杰出青年基金(49525102);北京大学青年基金资助项目 |
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| 摘 要： | 变化分析是多时相遥感影像的主要应用领域。以敦煌绿洲为例，探讨一种应用多时相ＴＭ影像进行地表植被变化分析的新方法。结果证明，用不同时相的ＮＤＶＩ影像进行彩色合成可以直观地反映地表植被的变化，而利用色彩变换得到的各分量可以对变化特点进行定量分析。其中色度反映变化类型，饱和度反映变化强度，而亮度图像则反映地表植被多年来的总体长势。除了直观和定量的特性之外，该方法还可以用于其它类型的变化分析，具有可扩展性
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| 关 键 词： | 地表植被 变化分析 色彩变换 多时相爱感影像 |
| 收稿时间： | 6/8/1999 12:00:00 AM |
| 修稿时间： | 9/1/1999 12:00:00 AM |
A New Method for Vegetation Change Detection Based on Multitemporal Landsat TM Images-application in Vegetation Change Detection of Dunhuang Oasis |
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| LI Ben-gang and TAO Shu.A New Method for Vegetation Change Detection Based on Multitemporal Landsat TM Images-application in Vegetation Change Detection of Dunhuang Oasis[J].Journal of Remote Sensing,2000,4(4):295-298. |
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| Authors: | LI Ben-gang and TAO Shu |
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| Institution: | Department of Urban and Environmental Sciences, Peking University, Beijing 1008 71;Department of Urban and Environmental Sciences, Peking University, Beijing 100871 |
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| Abstract: | Land cover change detection is an important applica ti on field of remotely sensed data In this paper, a new method for vegetation chan ge detection based on multitemporal Landsat TM images is introduced. Results of its application in vegetation change detection of Dunhuang Qasis show positive a spects of this method Color composition of multitemporal TM data gives an obviou s view of vegetation change in the stady area. Color components from color space transformation can be used for quantitative analysis of vegetation change. Hue and Saturation components indicate types and intensity of changes respectively. Lightness component shows general NDVI distribution over the study period. This new method can be easily applied to other change study fields. |
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| Keywords: | vegetation cover change detection color composition and color space transformation |
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