摘要
利用归一化植被指数(NDVI)估算植被覆盖度的模型,根据遥感数字图像,对鄱阳湖区1989年和2003年的植被覆盖度进行了估算,在此基础上,求得研究区不同植被覆盖度等级的变化转移矩阵,分析了鄱阳湖区14年来植被覆盖度等级变化的空间过程和变化趋势。总体上,该地区的植被覆盖度变化不大,仅局部区域变化较大。
Vegetation coverage around Poyung Lake area in 1989 and 2003 were estimated based on the model of vegetation coverage deriving from normalized difference vegetation index （NDVI） with the remote sensing data. And the change of vegetation coverage grade was established. The spatio -temporal change in vegetation coverage and its driving processes during recent 14 years were also discussed in this paper. The change of vegetation coverage is not obvious in the mass, but obvious between different districts.
出处
《江西农业学报》
CAS
2007年第1期103-106,共4页
Acta Agriculturae Jiangxi
关键词
鄱阳湖
遥感
植被覆盖度
NDVI
Poyang Lake
Remote sensing
Vegetation covernge
NDVI
