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林业科学 ›› 2013, Vol. 49 ›› Issue (3): 25-32.doi: 10.11707/j.1001-7488.20130304

• 论文 • 上一篇    下一篇

湖南省杉木林植被碳贮量、碳密度及碳吸存潜力

李斌1,2, 方晰1,3, 项文化1,3, 田大伦1,3   

  1. 1. 中南林业科技大学生命科学与技术学院 长沙 410004;2. 国家林业局 北京 100714;3. 南方林业生态应用技术国家工程实验室 长沙 410004
  • 收稿日期:2012-01-28 修回日期:2013-01-14 出版日期:2013-03-25 发布日期:2013-03-25
  • 通讯作者: 方晰

Carbon Storage, Carbon Density, and Carbon Sequestration Potential of Cunninghamia lanceolata plantations in Hunan Province

Li Bin1,2, Fang Xi1,3, Xiang Wenhua1,3, Tian Dalun1,3   

  1. 1. College of Life Science and Technology, Central South University of Forestry and Technology Changsha 410004;2. State Forestry Administration Beijing 100714;3. State Key Laboratory of Ecological Applied Technology in Forest Area of South China Changsha 410004
  • Received:2012-01-28 Revised:2013-01-14 Online:2013-03-25 Published:2013-03-25

摘要: 基于湖南省2005和2010年森林资源调查统计数据,结合国家野外科学观测研究站湖南会同杉木林生态系统定位研究站的观测数据,估算湖南省杉木林植被碳贮量、碳密度及碳吸存潜力。结果表明: 2005和2010年湖南省杉木林植被碳贮量分别为30.39×106和32.92×106t,均以中龄林的碳贮量最高,分别为17.64×106和17.31×106 t; 2010年各地州市杉木林植被碳贮量为0.34×106~6.45×106 t; 杉木林碳密度随林分龄级增加而增高,过熟林最大(23.90 tC ·hm-2以上), 2005和2010年湖南省杉木林平均碳密度分别为10.83和12.05 tC ·hm-2,各地州市杉木林植被碳密度为6.03~16.58 tC ·hm-2,基本上呈现出南高北低的趋势; 湖南省杉木林植被的现实碳吸存潜力为90.75×106 t,不同龄级林分的现实碳吸存潜力表现为中龄林(53.62×106 t)>近熟林(32.77×106 t)>幼龄林(4.36×106 t),各地州市杉木林植被的现实碳吸存潜力为1.18×106~17.39×106 t; 湖南省(2010年)现有未成熟杉木林到2020年时的固碳潜力为176.77×106 t,年固碳潜力为17.68×106t ·a-1,到达成熟阶段(26年生)时固碳潜力为211.67×106 t。湖南省杉木林分质量不高,中幼龄林所占比重较大,若能对现有杉木林加以更好的抚育管理,湖南省杉木林仍有很大的碳汇潜力。

关键词: 杉木林植被, 碳贮量, 碳密度, 碳吸存潜力, 湖南省

Abstract: Carbon storage, carbon density and carbon sequestration potential of Cunninghamia lanceolata plantations in Hunan Province were estimated based on the database of the forest resource inventory in 2005 and 2010, that was done by forest resources monitoring center of Hunan Province, and the database from the national field scientific observation and research station of C. lanceolata plantation ecosystem, Huitong, Hunan Province. The results showed that the total carbon storage in C. lanceolata. plantations accounted for 30.39×106 t in 2005 and 32.92×106 t in 2010, and the middle-aged forests had the highest proportion of the carbon storage with carbon storage of 17.64×106 t in 2005 and 17.31×106 t in 2010, respectively The amount of carbon storage in C. lanceolata plantations ranged from 0.34×106 t to 6.45×106 t varied with different prefectures in 2010. Carbon density of Cunninghamia lanceolata plantations increased as the stand age increased, reaching the maximum (more than 23.90 tC·hm-2) at over mature forest stage, with an average carbon density of 10.83 tC·hm-2 in 2005 and 12.05 tC·hm-2 in 2010, respectively, and ranged from 6.03 to16.58 tC·hm-2 in different prefectures, which showed a trend of lower carbon density in the northern prefectures to higher carbon density in the southern prefectures. The reality carbon sequestration potential of C. lanceolata plantations in Hunan was up to 90.75×106t, varying with different stand age classes allocating to middle-aged forest of 53.62×106 t, to near mature forest of 32.77×106 t, to young forest of 4.36×106 t, respectively, and that also varied from 1.18×106 to 17.39×106t with different prefectures. The future carbon sequestration potential of immature C. lanceolata forests was estimated as 176.77×106 t in 2020 with annual carbon sequestration potential of 17.68×106 t·a-1 and as 211.67×106 t at mature stage. These results indicated that the stand quality of C. lanceolata plantations was very poor in Hunan due to higher proportion of young stage and middle-aged stage, which suggested that C. lanceolata forests. would be a huge potential carbon sinks in the future with implementation of better cultivation and management measures.

Key words: Cunninghamia lanceolata plantation, carbon storage, carbon density, carbon sequestration potential, Hunan Province

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