Analysis of 30 Years Spatio-temporal Variation of Vegetation Cover Based on GEE in Anyuan County,Ganzhou
Based on the Landsat image data from 1991 to 2021 from the cloud plat form of Google East Engine(GEE),dimidiate pixel model,trend analysis method,Hurst index,and Moran index are used to analyse the vegetation cover of Anyuan county in 30 years and to explore its spatial and temporal change characteristics,spa-tial autocorrelation and future tendency.The results showed that the vegetation cover in Anyuan county was high in space.The area with increased vegetation cover auounts for 75.48％,the degraded area auounts for 17.11％,and the unchanged area auounts for 7.41％in the 30 years of the study period.The Hurst index predicted that the future vegetation cover in Anyuan county would mainly increase continuously.The results of spatial autocorrelation analysis showed that the study area as a whole showed significant positive spatial autocorrelation and was distribu-ted in a clustered state.The study area exhibits an overall significant positive spatial autocorrelation with an aggre-gated distribution.The improvement of vegetation cover in Anyuan county has already achieved significant results,however,it is necessary to focus on the areas with degraded vegetation cover and spatial autocorrelation anomalies in future.
万方数据
维普
