作　　者： ; ; ; ; ; ;

机构地区： 江苏省林业科学研究院

出　　处： 《南京林业大学学报（自然科学版）》 2010年第2期1-5,共5页

摘　　要： 利用江苏省第4次(2000年)和第5次(2005年)森林资源清查主要数据汇编,建立不同森林类型生物量与蓄积量之间的回归方程,对江苏省森林植被的碳储量和碳密度动态变化及其碳汇经济价值进行了估算。结果表明:2005年全省森林总碳储量约为2516.56万t,2000—2005年间年均增加约160.0万t,表明其是CO2的"汇",平均碳密度约为21.2t/hm2,远小于全国和世界的平均值。从地区分布看,苏南、苏中和苏北地区森林碳储量分别占全省的18.54%、8.68%和72.78%,在全省13个地级市中,徐州市的森林植被碳储量最大,占全省总量的20.93%,其次是宿迁市、淮安市,最低的是南通市,仅占全省的0.92%;平均碳密度以苏南较高、苏中次之、苏北较低。从森林类型看,全省大部分碳储量集中在阔叶林中,杨树是优势树种,5年间杨树造林面积增加值占全省新增林地面积的90.27%,占全省森林总碳储量的比例由39.51%增加到66.12%;针叶林造林面积和碳储量均呈现下降趋势。从龄组看,全省森林碳储量主要集中在幼龄林和中龄林中,2005年两者之和约占全省总量的72.86%。5年间全省累计森林碳汇经济价值约96.0亿元。 According to the forest inventory data of Jiangsu in 2000 and 2005, the dynamic carbon storage, carbon density and the economic value of forest in Jiangsu were assessed by means of the regression equation between stand biomass and volume of different forest types. The results showed that total carbon storage of forest in Jiangsu was 25 165 600 t in 2005, with an annual increment of about 1 600 000 t from 2000 to 2005, which suggested that the forests in Jiangsu province were the important sink of CO2. The average carbon density was 21.2 t/hm2, far less than the national and global average level. The carbon storage in three different geographical areas （the south, the centre and the north of Jiangsu province） accounted for 18.54 %, 8.68 % and 72.78 % respectively. Xuzhou had the most carbon storage among all of the 13 prefectures in Jiangsu （20.93 %）, followed by Suqian and Huai’an, while Nantong had the least carbon sink （0.92 %）. The north of Jiangsu had the highest average carbon density, and the next is the centre and the south of Jiangsu. Among the forest types, most of the carbon storage sank in the broad-leaved forest, in which, poplar was dominant species. Poplar plantation areas accounted for 90.27 % of all the new forest and carbon sank in poplars increased from 39.51 % to 66.12 %. The planting area and carbon storage have been declining of coniferous forest. From the age group, carbon storage is abundant in the young and middle-aged forests, which accounts for 72.86 % of the total carbon sink in trees in 2005. In those five years, the total economic value of carbon sink was about 9.6 billion RMB in Jiangsu province.

关 键 词： 生物量 碳储量 碳汇 碳密度 经济价值 江苏

领　　域： [农业科学]