Based on remote sensing,meteorological and statistical yearbook data,the spatiotemporal chan-ges of forestry ecological projects(FEPs)and vegetation carbon sequestration(VCS)in counties in Sichuan from 2002 to 2018 were analyzed,and the impacts of forestry ecological projects on vegetation carbon sequestration were investigated by multiple high-dimensional fixed effects model.Results indicated that the vegetation car-bon sequestration in Sichuan had a fluctuating upward trend with time,increasing from 1 737.56 g/(m2·a)to 1 836.89 g/(m2·a),with an annual average growth rate of 0.34％.In terms of spatial distribution,high values of carbon sequestration were concentrated in the mountainous of southwestern Sichuan,while low values were in the northwest plateau of Sichuan.The vegetation carbon sequestration in counties of the whole province showed an increasing trend.Sichuan Basin and southwest Sichuan were key areas for the implementation of FEPs,where the cumulative afforestation area accounted for 61.44％and 26.02％,respectively.FEPs in Sichuan significantly promoted the increase of vegetation carbon sequestration,and there was a time-lag effect.Additionally,per capita GDP,annual rainfall and annual mean temperature had significant positive effects on vegetation carbon sequestration,while population density had significant negative effects.
维普
万方数据