Carbon Storage and Carbon Density Impact Factor of Subtropical Evergreen Broad-leaved Forests in Jiangxi Province

Three typical subtropical evergreen broad-leaved forest were taken as the object which including Castanopsis sclerophylla forest, Cyclobalanopsis glauca forest and Schima superba forest. They are growing in Jinggangshan nature reserves, Jiuliansshan nature reserves and Dagangshan nature reserves in Jiangxi Province. The influence relation was analyzed between forest carbon density and biological factors, geographical factor through the investigation of forest carbon storage (carbon density), the biological factor and geographical factor in the sample plot. The influence relation of forest carbon density and climate factor were analyzed through remote sensing estimating forest carbon storage (carbon density) and collecting the climate factor date in the sample plot region from 1985 to 2015. The result showed there was a significant correlation between the carbon density and longitude, while the correlation between soil carbon density and longitude was unknown. The vegetation carbon density was not affected by latitude, while soil carbon density was correlated with latitude. The correlation between vegetation carbon density and slope and elevation was unknown, while soil carbon density was correlated with slope, but the correlation with altitude was unknown. There was a significant correlation between the vegetation carbon storage and the age of stand and the vegetation layer. The carbon density of vegetation and soil were increasing with the rise of temperature, on the contrary, it was reducing. The carbon density of vegetation was increasing with the increase of rainfall and sunshine lengthy. On the contrary, it was reducing. Soil carbon density was not affected by rainfall and sunshine.