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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (9): 132-135.

• 林学 园艺 园林 • 上一篇    下一篇

不同林地土壤有机碳储量及垂直分布特征

杨晓梅1,程积民1,孟蕾2,韩娟娟2   

  • 收稿日期:2009-12-26 修回日期:2010-01-15 出版日期:2010-05-05 发布日期:2010-05-05
  • 基金资助:

    国家重点基础研究发展计划“973”项目;国家自然科学基金重点项目(40730631)

Characteristics of soil organic carbon storage and vertical distribution in different forests

Yang Xiaomei1, Cheng Jimin1, Meng Lei2, Han Juanjuan2   

  • Received:2009-12-26 Revised:2010-01-15 Online:2010-05-05 Published:2010-05-05

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摘要：

本文研究了黄土高原子午岭林区天然柴松林、辽东栎林及人工油松林3种林地土壤有机碳储量及其垂直分布特征。结果表明：1) 3种林地土壤有机碳含量分别为13.67g/kg、13.95g/kg、11.43g/kg，并随着土壤深度的增加呈现递减的趋势，不同林分变化幅度差异不同，且各土层间达到显著性水平；2) 3种林地土壤有机碳密度差异显著，土层间变化范围为0.53～3.53 kg/m2，并随土壤深度增加而减少。整个土壤垂直剖面，碳密度在9.38～11.43 kg/m2 之间，其中0-50cm深度碳密度的贡献率达80%以上；3) 3种林地土壤碳储量偏低，平均为105.2t/hm2；林分间差异较大。

关键词: 仙草胶, 仙草胶, 树脂, 脱色

Abstract:

Abstract：In this paper, we studied the content of soil organic carbon storage and vertical distribution about natural forest Pinus tabulaeformis f. shekannesis, Quercus liaotungensis and artificial P. tabulaeformis in Ziwuling forest area. The results were showed as followings: (1) Content of soil organic carbon for three forests respectively was: 13.67g/kg, 13.95g/kg, and 11.43g/kg. Soil organic carbon contents generally decreased with depth of soil, but decrease range was different for the three forest type. Meanwhile, great significance differences have appeared among different soil layers. (2) Soil carbon density in the three forest types change greatly, with a range of 0.53~3.53 kg/m2 for five soil depth intervals. Soil carbon density decreased generally with the depth, too. In the whole soil profile, the range of carbon density was 9.38-11.43 kg/m2, and 80% carbon concentrated in 50cm depth of soil. 3) Soil carbon storage is low in these three forests. The average of storage was 105.2t/hm2, and large differences appeared between stands.