Spatial-temporal Change of Vegetation Coverage in Xing'an County Based on Landsat
Landsat images of Xing'an County were used in this study.The binary pixel model was used to estimate the vegetation coverage(FVC),and the single linear regression method was used to analyze the change trend of vegetation coverage.The results showed as follows:(1)The average FVC area showed an"S"-shaped upward trend from 2013 to 2021,reaching the maximum(0.754)in 2016 and the minimum(0.635)in 2019,with an average FVC of 0.707;(2)The spatial distribution of annual average FVC was high in the north and south,and low in the middle,in which high-grade FVC accounted for the most and low-grade FVC accounted for the least;(3)The change trend of vegetation cover in the study area has been good for many years.