Estimated Carbon Storage and Economic Value on the Mostly Forest Ecosystem in Hunan Province

Forest as the main terrestrial ecosystems, which can be fixed by plants through photosynthesis and reduce atmospheric CO2, and releasing O-2, which the dynamic balance of Earth's atmospheric CO2 and O-2, reducing the greenhouse effect and to provide the basis of human survival, has an irreplaceable status and roles. In this paper, carbon storage and its economic value of forest ecosystem in Hunan province were estimated. As a result, total SOC contents of Hunan forest was 1275.1382Tg, compositor of carbon sink was: Cunninghamia lanceolate > Pinus massoniana Lamb > Cinnamomum camphora(L.) Presl. > QuercusL. > Pinus elliottii > Liquidambar formoana Hance; total economic value of carbon sink in hunan mostly forest ecosystem was 96.78 x 10(6) Yuan; economic value in fixed CO2 was 355.18 x 10(6) Yuan; total average value of forest vegetation was 16.85 x 10(6) Yuan; average carbon value of soil was 79.91 x 10(6) Yuan. Compositor of average economic value that estimated combined by was : Cunninghamia lanceolate > Pinus maasoniana Lamb > Cinnamomum camphora(L.) Presl. > QuercusL. > Pinus elliottii > Liquidambar fotmoana Hance. It was a direct ratio between SOC contents and economic valuable.