Relationship between light and heavy fractions of organic matter for several agricultural soils in China
  • 【DOI】

    10.3321/j.issn:1001-0742.2005.06.007

  • 【摘要】

    Although numerous studies about the nature and turnover of soil organic matter(SOM) in light and heavy fractions( LFOM and HFOM, respectively) have been made, little information is available in relati... 展开>>Although numerous studies about the nature and turnover of soil organic matter(SOM) in light and heavy fractions( LFOM and HFOM, respectively) have been made, little information is available in relation to the relationship between LFOM and HFOM, and no attempts have been made to quantify a general relationship between LFOM and HFOM for agricultural soils under field condition. Our hypothesis is there may be an inherent relationship between LFOM and HFOM for agricultural soils under certain unaltered management practices for a long period, to this end, we therefore studied typically soils taken from different parts in China by using a simple density fractionation procedure. The results indicated that LFOM was positively correlated with LFOM/HFOM ratio for three typical soils. This information will be of particular use not only in deepening our understanding of the dynamics of SOM fractions but also in evaluating the potential of agricultural soils to sequestrate C under different management practices in a long term. 收起<<

  • 【作者】

  • 【作者单位】

    State Key Laboratory of Soil and Sustainable Agriculture/State Key Laboratory of Soil and Sustainable Agriculture/College of Resourcesand Environment

  • 【刊期】

    环境科学学报(英文版) ISTIC SCI 2005年6期

  • 【关键词】

    soil organic matter  light fraction  heavy fraction  agricultural soils 

  • 【基金项目】

    The China Distinguished Young Scholars Science Foundation 中国科学院知识创新工程项目