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林业科学 ›› 2009, Vol. 12 ›› Issue (6): 11-15.doi: 10.11707/j.1001-7488.20090603

• 论文 • 上一篇    下一篇

湖南会同毛竹林土壤碳循环特征*

肖复明1 范少辉2 汪思龙3 熊彩云1 申正其3   

  1. (1.江西省林业科学院 南昌 330032; 2.国际竹藤网络中心 北京 100102; 3.中国科学院会同森林生态实验站 湖南会同森林生态系统国家野外科学观测研究站 会同 418307)
  • 收稿日期:2007-07-10 修回日期:1900-01-01 出版日期:2009-06-25 发布日期:2009-06-25
  • 通讯作者: 范少辉

Soil Carbon Cycle of Phyllostachy edulis Plantation in Huitong Region, Hunan Province

Xiao Fuming1,Fan Shaohui2,Wang Silong3,Xiong Caiyun1,Shen Zhengqi3   

  1. (1.Jiangxi Academy of Forestry Nanchang 330032; 2.International Centre for Bamboo and Rattan Beijing 100102; 3.Huitong Experimental Station of Forest Ecosystem, Chinese Academy of Sciences National Research Station of Forest Ecosystem Huitong 418307)
  • Received:2007-07-10 Revised:1900-01-01 Online:2009-06-25 Published:2009-06-25

摘要:

测定和分析湖南会同毛竹林土壤的碳贮量和各组分呼吸量。结果表明: 毛竹林土壤有机碳贮量为115.558 t·hm-2,矿质土壤层、凋落物层和根系分别占96.01%,0.64%和3.34%; 毛竹林地土壤年呼吸排放碳总量为9.257 t·hm-2a-1,异养呼吸、自养呼吸和凋落物年呼吸量分别占59.49%,28.27%和12.24%; 毛竹林细根年生长量为6.895 t·hm-2a-1,年分解量为0.312 t·hm-2a-1,细根年周转率为0.93次·a-1; 毛竹林年凋落物进入土壤的碳总量为2.245 t·hm-2a-1,地上和地下凋落物分别占78.5%和21.5%。

关键词: 毛竹林, 土壤碳贮量, 土壤呼吸, 土壤碳循环, 会同

Abstract:

The carbon storage and respiration of each soil compartment of Phyllostachy edulis plantation in Huitong forest region, Hu,nan Province were analyzed in this paper. The results showed that the soil organic carbon storage density of the plantation was 115.558 t·hm-2, and mineral soil layer, litter layer and root layer occupied 96.01%, 0.64% and 3.34%, respectively The amounts of annual carbon released by soil respiration were 9.257 t·hm-2a-1, and heterophic respiration, autotrophic respiration and litter respiration occupied 59.49%,28.27% and 12.24% of the total soil respiration respectively.The fine root growth rate and decomposation rate of P.edulis plantation were 6.895 and 0.312 t·hm-2a-1, respectively. The annual turnover of fine root in P.edulis plantation was 0.93 time. a-1 The annual carbon input into P.edulis plantation soil through litter fall was 2.245 t·hm-2a-1, of which 78.5% was from aboveground litter and 21.5% was from underground dead roots.

Key words: Phyllostachy edulis plantation, soil carbon storage, soil respiration, soil carbon cycle, Huitong