| 人工柳杉林生物量及其土壤碳动态分析 |
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| 引用本文： | 段文霞,朱波,刘锐,陈实,周玉平,陈放.人工柳杉林生物量及其土壤碳动态分析[J].北京林业大学学报,2007,29(2):55-59. |
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| 作者姓名： | 段文霞 朱波 刘锐 陈实 周玉平 陈放 |
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| 作者单位： | 四川大学生命科学学院;四川省农业管理干部学院;中国科学院成都山地灾害与环境研究所;北京师范大学地理学与遥感科学学院;中国科学技术信息研究所;四川白水河国家级自然保护区管理局;四川大学生命科学学院 |
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| 基金项目： | 国家科技攻关项目
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国家重点基础研究发展计划(973计划) |
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| 摘 要： | 以四川彭州为典型案例，采用材积源生物量法和土壤剖面分析方法，对栽植5、10、17、22和26年的人工柳杉林生物量及其土壤碳动态进行了初步研究.结果表明，柳杉林的生物量随着生长年限的增长而增加，但与林龄并不呈线性相关.柳杉林的碳储量变化与林木生物量的增长趋势完全一致，5、10、17、22和26年柳杉林的碳储量分别为19.8、67.5、85.8、162和275 t/hm2.林下土壤剖面有机碳含量的平均值随年份的延长而逐渐上升，土壤不同层次有机碳含量的变化表现为:0～10 cm10～30 cm30～50 cm50～70 cm，但集中分布于50 cm以内.土壤有机碳表聚系数随林龄增长而减小，从5年期到26年期依次分别为14.8、9.68、8.85、5.27和3.86，表明了林木根系对土壤深层有机碳积累的有力贡献.5、10、17、22和26年的柳杉林土壤碳储量分别为80.4、106、126、164和210 t/hm2.人工柳杉林具有庞大的地上生物量和土壤碳库.
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| 关 键 词： | 人工柳杉林 生物量 土壤有机碳 碳汇 |
| 文章编号： | 1000-1522（2007）02-0055-05 |
| 收稿时间： | 1900-01-01 |
| 修稿时间： | 2005-12-21 |
Biomass and soil carbon dynamics in Cryptomeria fortunei plantations |
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| DUAN Wen-xia,ZHU Bo,LIU Rui,CHEN Shi,ZHOU Yu-ping,CHEN Fang.Biomass and soil carbon dynamics in Cryptomeria fortunei plantations[J].Journal of Beijing Forestry University,2007,29(2):55-59. |
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| Authors: | DUAN Wen-xia ZHU Bo LIU Rui CHEN Shi ZHOU Yu-ping CHEN Fang |
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| Institution: | 1 .College of Life Sciences, Sichuan University, Chengdu, 610064, P. R. China; 2 .Sichuan Province Agricultural Management Cadre College, Chengdu, 610071, P. R. China; 3 .Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, P. R. China; 4 .School of Geography, Beijing Normal University, 100875, P. R. China; 5 .Institute of Science and Technical Information of China, Beijing, 100038, P. R. China; 6 .Sichuan Baishuihe National Nature Reserve Bureau, Chengdu, 611930, P. R. China. |
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| Abstract: | Biomass and soil organic carbon dynamics of Cryptomeria fortunei plantations at 5,10,17,22 and 26 years-old were studied at Pengzhou County,Sichuan Province,employing volume-biomass method and soil profile investigation.Biomass of C.fortunei trees increased with age increasing,but such increases were nonlinear.Carbon storage of C.fortunei was estimated at 19.8,67.5,85.8,162 and 275 t/hm~2 in 5,10,17,22 and 26 years-old plantations,respectively.Soil organic carbon also increased with tree age increasing.Organic carbon in soil profile decreased in the order of 0-10 cm > 10-30 cm> 30-50 cm> 50-70 cm,with most distributed within the top 50 cm.The A-0 to C layer ratio of soil organic carbon decreased with increased tree ages;it was sequentially 14.8,9.68,8.85,5.27 and 3.86 for 5-26 years old plantations mentioned above,indicating the contribution of tree root system to soil carbon accumulation in the deeper soil layers.Soil organic carbon storage was 80.4,106,126,164 and 210 t/hm~2 in 5,10,17,22 and 26 years-old plantations.These findings indicated that C.fortunei plantations have a vast carbon storage and play an important role in soil carbon sequestration. |
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| Keywords: | Cryptomeria fortunei plantations biomass soil organic carbon carbon sink |
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