基于MODIS MOD13Q1的植被变化研究:以西藏墨竹工卡为例

Study on Vegetation Change Using MODIS MOD13Q1 Data: A Case Study of Maizhokunggar

以西藏墨竹工卡为研究区域,利用NASA提供的MODIS MOD13Q1数据产品(2000～2012年),研究其植被空间分布规律及变化特征,结果表明:西藏墨竹工卡地区NDVI值从3 800 m到4 600 m逐渐小幅增加,而到了4 600 m以上逐渐减少。多年来,墨竹工卡大部分区域植被处于相对稳定状态,无变化区域占96.08%。

With Maizhokunggar in Tibet as study region,by using MODIS MOD13Q1 provided by NASA(2000-2012),the vegetation spatial distribution law and variation characteristics were studied.The results showed that: Tibet Maizhokunggar NDVI value is gradually slightly increased from 3 800-4 600 m,and was gradually reduced over 4 600 m.Most regional vegetation is relative stable in Maizhokunggar over the years,no change region accounted for 96.08%.