应用生态学报2012，Vol.23Issue(2)：335-340,6.
南亚热带不同林龄红锥人工林碳贮量与碳固定特征
Characteristics of carbon storage and sequestration in different age beech (Castanopsis hystrix) plantations in south subtropical area of China
摘要
Abstract
To transform large area pure conifer plantations by planting indigenous and valuable broad-leaved tree species has been advocated as an effective close-to-nature forest management in sub-tropical China. Taking the 10-, 20- and 27-year-old Castanopsis hystrix plantations in Guangxi of South China as test objects and by the methods of plot investigation and biomass measurement, this paper studied the carbon content in different plant organs, litter layers, and soil layers and the carbon storage and its allocation in tree layer, litter layer and soil layer. For the test plantations, the carbon content in different C. hystrix organs ranged from 49. 7% to 57. 9% , and that in litter layer was 40. 8% -50. 5% , being higher in fresh litter layer than in semi-decomposed litter layer. The carbon storage in the soil profiles (0-60 cm) increased with plantation age but decreased with soil depth. The total carbon storage in the 10-, 20- and 27-year-old plantations was 182.42, 234. 75 and 269. 75 t · hm-2, respectively, among which, tree layer, litter layer and soil layer occupied 19. 8% , 32. 0% and 32. 8% , 1.5%, 1. 6% and 1.3%, and 78. 7% , 66.4% and 65. 9% , respectively. The annual net carbon sequestration of the 10-, 20- and 27-year-old plantations was 4. 70, 5. 64 and 5. 18 t · hm-2, respectively. It was considered that C. hystrix had a high capability in carbon sequestration, being able to be an ideal tree species for multi-purpose forest management with large and valuable timber production.关键词
红锥人工林/碳含量/碳贮量/碳分配Key words
Castanopsis hystrix plantation/ carbon content/ carbon storage/ carbon allocation分类
农业科技引用本文复制引用
刘恩,王晖,刘世荣..南亚热带不同林龄红锥人工林碳贮量与碳固定特征[J].应用生态学报,2012,23(2):335-340,6.基金项目
林业公益性行业科研专项资金项目(201104006,200804001)资助. （201104006,200804001）
