Spatial and Temporal Variation in Fractional Vegetation Cover Before and After the Construction of Aba Hongyuan Airport Based on GEE
With the help of Google Earth Engine platform,the 15 km buffer zone around Aba Hongyuan Airport was taken as the research area,and the Landsat series satellite data with a resolution of 30 m were selected,pixel binary model was used to invert the remote sensing images of the region from May to September during 2004-2020.The spatial pattern,structural changes and trends of fractional vegetation coverage before and after airport construction were analyzed from the overall and pixel scales.The results showed that:(1)After the opening of the airport,the grassland vegetation in the northwest and northeast directions grew well,and fractional vegetation coverage decreased with the increase of altitude.(2)During the period from 2004 to 2020,the area of low fractional vegetation coverage and medium-low fractional vegetation coverage decreased by 60.04％and 43.07％,respectively,while the area of medium fractional vegetation coverage,medium-high fractional vegetation coverage and high fractional vegetation coverage increased by 15.13％,50.11％and 61.22％,respectively.(3)The significantly improved area of fractional vegetation cover in the study area far exceeded the significantly degraded area,with the improved area mainly concentrated in the north-west,north-east and south direction of the airport,and the significantly degraded area mainly located in the due north,south-west and south-east directions of the airport.
Aba Hongyuan airportfractional vegetation coveragepixel binary modeldistribution feature and trends
万方数据
维普
