Study of the Vegetation Coverage Changes based on NDVI in Linfen City by Remote Sensing
Aiguo Zhang
Abstract
Aiguo Zhang
Abstract
The vegetation coverage change was extracted by NDVI rapidly.In this paper,there were TM /ETM images of Linfen,which acquired 1990s and early 20th,selected.The vegetation coverage were calculated based on NDVI.The vegetation coverage and its changes between 1990 and 2002 were also analyzed.The result showed that: the vegetation coverage increased from 39.61% in 1990 to 41.77% in 2002;the decreasing rate of very lower vegetation coverage was 57.69%;the increasing rate of high vegetation coverage was 9.67%.
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The vegetation coverage change was extracted by NDVI rapidly.In this paper,there were TM /ETM images of Linfen,which acquired 1990s and early 20th,selected.The vegetation coverage were calculated based on NDVI.The vegetation coverage and its changes between 1990 and 2002 were also analyzed.The result showed that: the vegetation coverage increased from 39.61% in 1990 to 41.77% in 2002;the decreasing rate of very lower vegetation coverage was 57.69%;the increasing rate of high vegetation coverage was 9.67%.
Key concepts: Normalized Difference Vegetation Index, Vegetation (pathology), Environmental science, Remote sensing, Vegetation Index, Enhanced vegetation index, Physical geography, Geography