首页 >  2000, Vol. 4, Issue (4) : 295-298

摘要

全文摘要次数: 3348 全文下载次数: 28
引用本文:

DOI:

10.11834/jrs.20000410

收稿日期:

1999-06-08

修改日期:

1999-09-01

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一种利用多时相TM影像分析地表植被变化的新方法--以敦煌地区绿洲植被变化分析为例
北京大学城市与环境学系,北京100871
摘要:

变化分析是多时相遥感影像的主要应用领域。以郭煌绿洲为例, 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。

A New Method for Vegetation Change Detection Based on Multitemporal Landsat TM Images-application in Vegetation Change Detection of Dunhuang Oasis
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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