摘要
Abstract
Taking Beijing as the study area which is based on the Landsat 5 TM in 2000 and the Landsat 5 TM in 2010 remote sensing data,using the dimidiate pixel model to determine vegetation coverage and analyse its dynamic changing from 2000 to 2010.The study shows that in 2000,the vegetation coverage in Beijing is mainly low vegeta-tion coverage,medium vegetation coverage,middle and high vegetation coverage;While in 2010,the vegetation cov-erage in Beijing is mainly middle and high vegetation coverage and high vegetation coverage.During the 10 years be-tween 2000 and 2010,high vegetation coverage and low vegetation coverage are of the biggest changing,the former the former increases 3066 km2 ,accounted for 18.25% of the total area of Beijing City,the latter decreases 2103.36 km2 ,accounted for 1 2.5 2% of the total area ,all other levels of vegetation coverage area change degree is relatively small.In 2000,the area of low vegetation coverage was the largest,and in 2010,the area of high vegetation cover-age was the largest.In the ten years,the middle and high vegetation coverage was the most important conversion type,the conversion rate made up 45.501%.关键词
植被覆盖度/NDVI/遥感/像元二分模型Key words
Vegetation coverage/NDVI/Remote sensing/Dimidiate pixel model分类
农业科技
