The estimation of aboveground vegetation carbon storage based on GF-1 WFV satellite images in Fengning County
Quantitative estimation of carbon storage of terrestrial vegetation and its distribution can help to understand the regional carbon balance,and provide scientific basis for the management of emission reduction and sustainable development.According to GF-1 WFV satellite remote sensing images and synchronous field surveys conducted in 2015 in Fengning county,Hebei,China we established single curve regression models and multiple linear regression models of aboveground biomass for forest,shrub and grassland.Optical inversion models were selected to calculate vegetation aboveground biomass,and aboveground carbon density and carbon storage were estimated.Spatial distribution features of the study area were analyzed using GIS.We found that our multiple regression models had good inversion precision,which can be well applied to estimate vegetation aboveground biomass for the forest and grassland (R2 values respectively 0.528and 0.777).The exponential equation based on RVI was the best inversion model to estimate shrub aboveground biomass and the R2 value was 0.620.As at August 2015,the aboveground vegetation carbon densities were respectively 55.406tC/hm2,3.304tC/hm2 and 0.533 t C/hm2 for forest,shrub and grassland.Aboveground vegetation carbon storages were respectively 15.714TGC,1.016TgC and 0.080TgC for forest,shrub and grassland.The total aboveground vegetation carbon storage was 16.810TgC except for croplands,indicating that forest vegetation represents the main aboveground carbon pool.The vegetation carbon density in Fengning county increased,then decreased with rising of elevation.The vegetation aboveground carbon storage lies mainly at an altitude of 700～1500m.
GF-1 WFV satellitecarbon densityvegetation carbon storageFengning county
NETL
NSTL
万方数据
维普
