摘要
Abstract
Based on MODIS remote sensing images, the VFC index is used to retrieve the spatial and temporal evolution process of vegetation coverage in the Fen River Basin at 16 D step lengths from 2004 to 2013. Combined with 5 natural environment factors, temperature, precipitation, elevation, slope and slope aspect in the study area, qualitative evaluation and quantitative statistics were used to analyze the spatial pattern and temporal evolution of VFC, and to explore the temporal and spatial distribution relationship between vegetation cover and environmental factors. The results showed the vegetation coverage is better at the edge of the basin, that is, the corresponding Lvliang mountain area and Taihang Mountain Area. The correlation between vegetation cover and precipitation is high in the north and low in the south, the correlation between vegetation cover and temperature is high in edge and low in center. From the time distribution, the distribution curve of vegetation cover is consistent with that of precipitation and temperature, but the crest of the wave is a step length in advance, from the topographic distribution of vegetation, there was the highest vegetation coverage at a schattenseite of 0°～3° slope and below 500 m altitude.关键词
植被覆盖/汾河流域/时空变化Key words
Vegetational coverage/Fenhe River Basin/temporal and spatial variation分类
天文与地球科学
