Spatial and temporal variation characteristics of vegetation coverage and analysis of topographic factors in Shanxi Province from 2000 to 2019
[Objective]The study aimed to explore the temporal and spatial variation characteristics of vegetation coverage in Shanxi Province and the impact of topographic factors on vegetation coverage,pro-viding,laying a basis for the construction and protection of ecological environment by using the favorable terrain in the region.[Method]Based on the annual NDVI data and DEM images,the temporal and spatial changes of vegetation coverage in Shanxi Province from 2000 to 2019 and its relationship with topographic factors were analyzed by using pixel binary model method,univariate linear regression and spatial superposi-tion analysis.[Result]The spatial distribution of vegetation coverage in Shanxi Province showed a trend of low-high-low from northwest to Southeast.Of this region,Yangquan City,Changzhi City and Jincheng city had a larger area of vegetation coverage,where the improved area of vegetation coverage was greater than the degraded area from 2000 to 2019.From 2000 to 2019,the vegetation coverage in Shanxi Province showed an overall upward trend,with a growth rate of 0.196%/a,changing from the low coverage,medium-low coverage and medium coverage to the medium-high or high coverage.From the perspective of topographic factors,the vegetation coverage was less affected by slope aspect,but more affected by slope and elevation,and with the increases of slope and elevation,the vegetation coverage showed an upward trend.[Conclusion]From 2000 to 2019,the vegetation coverage showed an overall increasing trend,and the vegetation was improved greatly.The change of vegetation coverage was significant under different con-ditions of slope and elevation terrain,but not significant under different slope-direction and terrain condi-tions.
vegetation coveragespatiotemporal variationtopographical factorsShanxi Province
NETL
NSTL
万方数据
维普
