格氏栲人工林和杉木人工林碳吸存与碳平衡  

Carbon Sequestration and Balance in Castanopsis kawakamii and Cunninghamia lanceolata Plantations in Subtropical China

作　　者：杨玉盛[1] 陈光水[1] 王义祥 谢锦升[3] 杨少红[3] 钟羡芳[1] 

机构地区：[1]福建省亚热带资源与环境重点实验室福建师范大学地理科学学院,福州350007 [2]福建省农业科学研究院,福州350002 [3]福建农林大学林学院,福州350003

出　　处：《林业科学》2007年第3期113-117,共5页Scientia Silvae Sinicae

基　　金：高校优秀青年教师奖项目;福建省重大基础研究项目(2000F004);教育部重点科研项目。

摘　　要：To provide potential implications of species selection for carbon plantation, differences in carbon sequestration pattern and net ecosystem production (NEP) were determined between two 36-year-old plantations of broadleaved species, Castanopsis kawakamii and Cunninghamia lanceolata, in Sanming, Fujian. Annual net carbon sequestration was 13.639 and 6.599 t C·hm -2 a -1 , respectively, in the C. kawakamii and the C. lanceolata, among which the annual biomass C increment and the litterfall production was evenly distributed. To the annual net carbon sequestration, the contribution of stem (wood plus bark) increment was much lower, and that of branch increment was much higher in the C. kawakamii than in the C. lanceolata (26.6% versus 40.3%, and 11.5% versus 0.3%). In both plantation, the above and belowground litterfall accounted 60% and 40% respectively for the annual litterfall production, which was estimated 7.183 t C·hm -2 a -1 in the C. kawakamii and 3.554 t C·hm -2 a -1 in the C. lanceolata. Annual soil heterotrophic respiration was responsible for a C loss of 5.983 and 2.984 t·hm -2 a -1 from soil to atmosphere in the C. kawakamii and the C. lanceolata, respectively. Carbon balance analysis showed there were a positive net ecosystem production (C sink), 7.656 and 3.615 t C·hm -2 a -1 , for the C. kawakamii and the C. lanceolata, respectively. For the purpose of carbon management, C. kawakamii might be a more suitable species than C. lanceolata in local region.To provide potential implications of species selection for carbon plantation, differences in carbon sequestration pattern and net ecosystem production （NEP） were determined between two 36-year-old plantations of broadleaved species, Castanopsis kawakamii and Cunninghamia lanceolata, in Sanming, Fujian. Annual net carbon sequestration was 13.639 and 6.599 t C· hm^- 2 a^- 1, respectively, in the C. kawakamii and the C. lanceolata, among which the annual biomass C increment and the litterfall production was evenly distributed. To the annual net carbon sequestration, the contribution of stem （wood plus bark） increment was much lower, and that of branch increment was much higher in the C. kawakamii than in the C. lanceolata （26.6 % versus 40.3 %, and 11.5 % versus 0.3 % ）. In both plantation, the above and belowground litterfall accounted 60 % and 40% respectively for the annual litterfall production, which was estimated 7.183 t C· hm^-2a^- 1 in the C. kawakamii and 3.554 t C· hm^- 2 a^- 1 in the C. lanceolata. Annual soil heterotrophic respiration was responsible for a C loss of 5.983 and 2.984 t· hm^-2a^-1 from soil to atmosphere in the C. kawakamii and the C. lanceolata, respectively. Carbon balance analysis showed there were a positive net ecosystem production （C sink）, 7.656 and 3.615 t C·hm^-2a^- 1, for the C. kawakamii and the C. lanceolata, respectively. For the purpose of carbon management, C. kawakamii might be a more suitable species than C. lanceolata in local region.

关 键 词：格氏栲 杉木 碳吸存 碳平衡 

分 类 号：S791.270.9[农业科学—林木遗传育种] S718.554[农业科学—林学]