中文摘要：

以峨眉山自然保护区为例,基于Landsat数据,提取1980年、1994年、2002年和2010年归一化植被指数（NDVI）,并结合GIS空间分析技术,分析了近30年植被覆被的NDVI变化及高程特征.结果表明,区域内植被覆盖以1994年为分界,呈现显著的先增后减趋势;植被垂直分带为低山分布的常绿阔叶林优势显著,占全区面积的41.44％,低中山分布的常绿与落叶阔叶混交林和中山海拔分布的针阔叶混交林的NDVI集中分布在0.2-0.5区间,而高中山海拔分布的亚高山针叶林的NDVI较稳定,NDVI＜ 0.2的区域极少.

英文摘要：

Normalized Difference Vegetation Index （NDVI） was extracted to research the NDVI dynamic evolution characteristics aided by GIS technology and remote sensing data of Landsat in the natural scenic area of Emei Mountain. The results showed that the year in 1994 was the boundary. Area vegetation coverage obviously showed a trend ： Increasing first but decreasing next. In term of vertical vegetation coverage, in the lower part of the mountain, evergreen broad - leaved forest grew markedly, taking up 41.44 % of the total area, evergreen and deciduous broad - leaved mixed for- est in the middle and lower part of the mountain and needle broadleaf mixed forest in the middle of the mountain, the date of NDVI both concentration distribution in the range of 0.2 - 0.5. In the higher part of the mountain, the NDVI of subalpine coniferous forest was relatively stable, the area where NDVI less than 0.2 was very few.