热带亚热带植物学报2025，Vol.33Issue(5)：503-512,10.DOI:10.11926/jtsb.4916
基于GEE平台的海南岛植被覆盖度时空变化和影响因子探测
Spatiotemporal Variation and Influencing Factors of Fractional Vegetation Cover in Hainan Island Based on Google Earth Engine Platform
摘要
Abstract
Vegetation is an important part of terrestrial ecosystems,and the study of the spatial and temporal variation characteristics of fractional vegetation cover(FVC)and its influencing factors is of great significance for regional ecological conservation and management.By using the Google Earth Engine(GEE)platform and pixel binary model,the FVC of Hainan Island from 2000 to 2020 was calculated.The spatial and temporal variability of the FVC was analyzed using the Theil-Sen Median trend analysis,the Mann-Kendall test and the Hurst index.Finally,structural equation modelling and geographic detector were used to analyze the response mechanisms of the spatial distribution characteristics of FVC in Hainan Island to climate,topography and human activities.The results showed that FVC in Hainan Island had a significant increasing trend in the past 21 years,with a growth rate of 0.025/10 a.The FVC changes were mainly not significantly improved and extremely significantly improved,accounting for 35.34%and 29.38%of the study area.In the future,the vegetation changes was dominated by weak counter-persistent increase and weak persistent increase.Land use type,elevation,slope,and population density were the dominant factors affecting the spatial distribution of FVC.Interaction type was dominated by bivariate enhancement and nonlinear enhancement.The interaction between land use type ∩ population density and land use type ∩ elevation was stronger,with q values of 49.56%and 48.38%.Therefore,it might provide a theoretical basis for the vegetation restoration policy on Hainan Island.关键词
植被覆盖度/Google Earth Engine/时空变化/影响因子/地理探测器Key words
Vegetation cover/Google Earth Engine/Spatial and temporal variation/Influencing factor/Geographic detector引用本文复制引用
郭建超,张林,齐实,陈家东,李鹏,王懋源..基于GEE平台的海南岛植被覆盖度时空变化和影响因子探测[J].热带亚热带植物学报,2025,33(5):503-512,10.基金项目
海南省重大科技计划项目(ZDKJ2021033)资助 This work was supported by the Project for Major Science and Technology in Hainan(Grant No.ZDKJ2021033). （ZDKJ2021033）
