安徽农业科学Issue(18)：9728-9730,9861,4.
桂东南低山区柳杉人工林生态系统碳储量分配特征
Study on Carbon Storage and Allocation of Cryptomeria fortunei Plantation in the Low Mountain of Southeast Guangxi
摘要
Abstract
[Objective] The forest carbon sink of Cryptomeria fortunei Plantation in the low mountain of subtropical region was studied. [ Method] The carbon content .storage and accumulation pattern of 31-year-old C. Fortunei plantation were revealed in Liuwan Forestry Farm of Guangxi Province. [ Result] (1) The carbon content in different organs in tree layer ranged from 498.5 - 530.3 g/kg , and decreased in the order as leaf > dead wood branch > stem > major root > branch > fine root > bark > medium root > coarse root. The carbon density decreased drastically with the increase of soil deepness. (2 ) The total carbon storages of C. Fortunei plantation ecosystem was estimated as 393. 651 t /hm2, of the total storage of carbon was 29.22% accounted in vegetation layer, and accounted for 70.78% in soil layer. The annual carbon net fixation of plantation was estimated up to 3. 709 t/( hm2 · A) , and annual carbon net fixation in the tree layer was 3. 537 t/(hm2 · A). (3) The carbon storage in the 0-20 cm top soil layer was 132.418 t/hm2, being especially higher than that of vegetation layer. [ Condusion ] The conservation of vegetation and topsoil in the low mountain of southern subtropical region could be helpful to the longtime soil carbon stability.关键词
柳杉人工林/碳素含量/碳储量/南亚热带Key words
Cryptomeriafortsnei plantation/Carbon density/Carbon storage/Southern subtropical region分类
农业科技引用本文复制引用
蒋林,林宁,莫德祥,卓宇..桂东南低山区柳杉人工林生态系统碳储量分配特征[J].安徽农业科学,2012,(18):9728-9730,9861,4.基金项目
广西“十一五”林业科技研究项目(桂林科字[2009]第23号) （桂林科字[2009]第23号）
中国科学院战略性先导科技专项(XDA05050205). （XDA05050205）
