Dynamic Analysis of Vegetation Change in Tianzhu Tibetan Autonomous County Based on RS
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Aimin Wang, Lingxiao Xu, Minghao Tang
Based on MODIS products and using ArcGIS 10, ENVI 5.0 and other data processing software, this paper studied the spatial characteristic changes of vegetation coverage in Tianzhu Tibetan Autonomous County from 2015 to 2019 by using pixel dichotomial model and dynamic spatial change model, and obtained the vegetation coverage statistical table, migration matrix and dynamic spatial change matrix. The data show that the vegetation coverage in this region is on the rise, and the vegetation in the middle and low cover areas, ground cover areas and no cover areas are all converted to higher vegetation levels. However, due to natural reasons, there are still a small number of areas with small changes in vegetation coverage or even vegetation degradation. The region should continue to strengthen ecological and environmental protection on the existing basis to maintain green development.
Vegetation coverage, Dimidiate pixel model, Variation characteristics