基于归一化指数(NDVI)的植被覆盖度分级研究——以贵州省为例

A study on vegetation coverage based on NDVI——taking Gui Zhou Province as an example

土地植被覆盖度是反映土地利用变化的一个重要指标,但传统的研究方法需要耗用大量的人力与物力进行采点分析。本文以贵州省为例,以CBERS2遥感影象为数据源,利用遥感与地理信息系统技术,根据归一化植被指数(NDVI)可提供植被反射重要信息的原理,通过建模反演植被覆盖度,利用遥感与地理信息系统软件,得出土地植被覆盖度数据与专题地图。利用NDVI研究贵州省的植被覆盖度是切实可行的技术。

Vegetation coverage is an important index reflecting the land use change.Employing traditional method,however,needs to consume massive manpower and materials for conducting sampling and analyzing.By employing remote sensing and geographic information system technology and using CBERS2 remote sensing image as the data pool,this research conducted an inversion calculation of vegetation coverage of Guizhou Province through modeling based on the theory that NDVI（normalized difference vegetation index） can provide important information of vegetation reflection.Both land coverage data and thematic map were finally obtained thanks to the support of remote sensing and geographic information system software.The results show that calculation of vegetation coverage of Guizhou Province using NDVI is feasible.