土壤有机质分组方法研究进展

Review on Soil Organic Matter Fractionation

土壤有机质(Soil Organic Matter,SOM)是陆地生态系统的重要组成成分,在陆地碳循环研究中有着重要作用。SOM与土壤物理、化学和生物性质密不可分,其组成、性质和转化一直受到人们的重视。由于SOM的组成、结构、存在方式的复杂性,对SOM的研究一直与其分组技术相联系。根据SOM分组技术所采用的原理和方法不同,主要分为化学分级、物理分级和生物学分级。最后指出土壤活性有机碳的物理分级将是今后研究的主要方向。

Soil organic matter （SOM）, as a main component of terrestrial ecosystem, plays a very important role in terrestrial soil carbon cycle. SOM closely coupled with soil physical, chemical and biological characteristics has received great attention on its components, characteristics and transformations. Relative research on SOM has been associated with its fractionation technologies due to SOM complexity in its components, structures and existing ways. In this paper, we reviewed SOM fractionation technologies.According to its differences in theories ,and methods, SOM fractionation technologies can be classified as chemical, physical and biological ones. The prospective research on physical fractionation of soil labile organic carbon is forecasted in the end of this paper.