This paper analyzes the spatial and temporal variations of vegetation coverage in Tajikistan using the MODIS NDVI data during 2000—2014 and based on the method of trends analysis.The results showed that(1)The average NDVI in the summers of Tajikistan was on the rise in the recent 15 years,but the linear trend was not obvious.(2)The area percentage of NDVI value grade was volatile in the smaller (< 0.2)and bigger (> 0.5)ranges,the middle (0.2～0.5)range of area was relatively smooth.(3)In spatial distribution,the average NDVI in the central and western regions was higher than that in the eastern region;the NDVI of lower altitude mountains and flat valley is higher than that in the high altitude mountains.(4)In spatial variations,the increasing area was the largest,the reducing area is the second,and the stability area was the smallest;To the linear change,the significant and very significant areas were very small,and the less significant area covers more than 95% of the vegetation covered areas.(5)To find out the variation characteristics of vegetation coverage can promote the study of the country's vegetation evolution trend,and play a positive role in the development of ecological environment construction policies.
LI Wei
,
BATUR Bake
,
WU Yanfeng
,
WEI Xiaoqin
,
RASULOV Hamid
. Spatiotemporal Variations of Vegetation Coverage in Summers from 2000 to 2014,Tajikistan[J]. Forest and Grassland Resources Research, 2015
, 0(1)
: 106
-111
.
DOI: 10.13466/j.cnki.lyzygl.2015.01.019
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