几种乔木林碳汇功能研究

根据研究区昆明市海口林场资源的相关资料,利用不同森林类型生物量与蓄积量之间的回归方程,对研究区8种主要乔木林及其不同林龄结构的生物量和碳储量进行了推算,并分析了天然林与人工林的碳储量和碳密度。结果表明,研究区8种主要乔木林的总碳储量为80 142.30 t,针叶林碳储量占总碳储量的57.94%;碳储量最大的乔木林为华山松林,其碳储量占总碳储量的30.73%;8种主要乔木林不同龄级碳储量由高到低分别为中龄林>近熟林>幼龄林>成熟林;同一龄级、不同类型乔木林的碳汇能力表现各异;研究区人工林的碳储量比天然林小,且人工林和天然林的碳密度低于我国的平均水平。

Study on the carbon-sink of several high-forests

According to the basic data of Haikou Tree Farm of Kunming,the biomass and carbon storage of 8 kinds of high-forests and different stand age structure in study area were estimated with the method of regression equation between biomass and volume in different forest types,analyzed the carbon storage and carbon density of natural and planted forest.The result showed that the total carbon storage of 8 kinds of high-forests was 80 142.30 t,carbon storage of coniferous forest made up 57.94%.The carbon storage of Pinus armandii forest was the most made up 30.73 percent of the total.The carbon storage of different age-classes from high to low was: half-mature forest> near-mature forest> young forest> mature forest in 8 kinds of high-forests.The carbon sink capacity of 8 high-forests was different in the same age-class.The carbon storage of the planted forest was less than the natural forest,and their carbon density was lower than average level of our country.