四川省森林植被碳储量及碳密度估算

基于第8次全国森林资源连续清查数据，采用生物量扩展因子法，对四川省森林植被资源的碳储量及碳密度进行估算及分析。结果表明：截止2013年，四川省森林植被总碳储量为729.05 Mt，森林植被平均碳密度为43.26 t/hm²，林分生物量为1 331.66 Mt，林分碳储量为670.09 Mt，林分平均碳密度为56.84 t/hm²；针叶林碳储量在四川省森林各林型碳储量中贡献最大，成过熟林在不同林龄结构碳储量中占有重要地位；幼龄林及中龄林面积占森林林分面积的42.67%，说明四川省森林植被资源趋于年轻化，具有巨大的发展潜力，随着林龄的增长，林分碳密度与各龄组中单位蓄积量呈逐渐增长趋势。

Study on Carbon Storage and Carbon Density of Forest in Sichuan Province

Based on data from the 8th national continuous forest inventories (CFI), the carbon density and carbon storage of forest in Sichuan Province were estimated with the Variable Biomass Extension Factor Method. Results indicated that till the 8th forest inventory, the forest biomass of Sichuan Province was 1 331.66 Mt, and the total carbon storage of forest vegetation of Sichuan Province was 729.05 Mt, the average carbon density of stand was 56.84 t/hm2, the average carbon density of forest vegetation was 43.26 t/hm2. Coniferous forest has the greatest contribution to carbon storage of all types of forest in Sichuan Province. Over mature forest and mature forest play an important role in carbon storage. Young and middle-aged forest area account for 42.67% of the stands area of forest, which indicated that the forest resources in Sichuan vegetation tend to be younger, and have enormous development potential. With the growth of stand age, carbon density of stand and unit stock volume of each age group was gradually increasing.