安徽省森林碳储量及碳密度特征研究

Storage and Density Characteristics of Forest Carbon in Anhui province

基于安徽省第九次全国森林资源清查数据,利用生物量—蓄积量转换模型,从不同森林类型、起源、龄组、优势树种(组)等方面进行分析,运用生物量换算因子连续函数法,对安徽省森林碳储量及碳密度进行估算。结果表明,安徽省森林碳储总量为11 843.59×10~4t,平均碳密度29.93 t/hm^2,其中乔木林碳储量为9 790.17×10~4t,占森林总碳储量的82.66%,乔木林平均碳密度为31.72t/hm^2,碳密度大小排序为:阔叶林>针阔混>针叶林,经济林、竹林碳储量为2 053.42×10~4t。乔木林中,天然林的面积、碳储量略小于人工林,但天然乔木林各龄组碳密度均大于人工林;阔叶混交林、杨树、马尾松、杉木、针阔混交林、栎类、针叶混交林的面积、碳储量占优势,其中又以阔叶混交林为最大,面积、碳储量均超过乔木林的28%。文章指出安徽省乔木林碳密度水平仍然不高,今后在增加森林面积的同时,仍需采取合理经营管理措施,促使森林质量和碳汇水平不断提高。

Based on data from the 9 th continuous forest inventory in Anhui Province,the forest types,origins,age groups,and dominant species were analyzed by the biomass-volume conversion model,and the forest carbon storage and density were estimated with variable biomass expansion factor function（ BEFF）method. The results showed the total forest carbon storage in Anhui province was 11843. 59×10^4 t,arbor forest carbon storage was 9790. 17×10^4 t,accounting for 82. 66%,and its average density was 31. 72 t/hm^2,which followed the sequence of broad-leaved forest coniferous and broad-leaved mixed forest coniferous forest,The carbon storage of economic forest and bamboo forest was 2053. 42×10^4 t. The planted forest was superior to the natural forest on the area and the carbon storage,but inferior to all age groups of the natural forest on the carbon density. The area and carbon storage of broad-leaved mixed forest,Populus L.,Pinus massoniana,Cunninghamia lanceolata,coniferous and broad-leaved mixed forest,Quercus spp.,coniferous mixed forest,were dominant in arbor forest,in which the proportion of broad-leaved mixed forest was the largest,accounting for 28%. The arbor forest density was still not high. This paper indicated to take proper management measures and improve the forest quality and carbon storage at the same time of expanding forest area.