Spatial Distribution Characteristics of Biomass and Carbon Storage in Forest Vegetation in Chongqing Based on RS and GIS

摘要

Research on the spatial distribution characteristics of carbon storage in forest vegetation not onlyfacilitates the study of carbon sink and ecological compensation of the forest ecosystem, but alsoprovides basic data for recovering and reconstructing the forest ecosystem and increasing thecarbon sink. In this study, remote sensing images of Landsat TM (August) in 2011 and a large amountof actual surveyed data of the sample plots were used as the main and supplementary data sources,respectively. Chongqing was selected as the study site to quantitatively estimate the biomass, carbonstorage, and carbon density of forest vegetation based on the biomass-remote sensing (RS) geoscientificdata regression model with the aid of RS and GIS techniques. With the spatial analysis function ofArcGIS, factors affecting the geographic distribution of biomass were investigated from a macroscopicperspective, and the geographical distribution pattern characteristics of biomass in the study areawere quantitatively discussed. Results showed that the total aboveground biomass of Chongqing is2.83×10 8 ?t,?and?that?of?the?forest?ecosystem?is?1.39×10 8 ?t.?Biomass?was?mainly?distributed?in?northeastand southeast Chongqing, and the overall distribution pattern was high in the east and low in the west.Forest vegetation and biomass were mainly distributed in mid-high altitudes with steep slopes. Despitethe results of this biomass and carbon storage study using RS in Chongqing, further research basedon the carbon cycle is needed.