| 土壤有机质分组方法研究进展评述 |
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| 引用本文： | 毛艳玲.土壤有机质分组方法研究进展评述[J].泉州师范学院学报,2008,26(6):70-75. |
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| 作者姓名： | 毛艳玲 |
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| 作者单位： | 福建农林大学,资源与环境学院,福建,福州,350002 |
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| 基金项目： | 国家自然科学基金项目，福建省自然科学基金计划资助项目，福建省省属高校项目 |
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| 摘 要： | 土壤有机质包含各种各样的功能库，其功能库有特定的稳定机制及周转速率，目前已经有许多分离和分析土壤有机质组分的方法．土壤有机质分组方法一般可分为物理分组和化学分组方法，将这两种方法相结合是今后研究的重点．活性土壤有机质可通过土壤微生物量、轻组有机质和颗粒有机质来表达．不同分组方法分离出的组分具有不同物理化学性质，使土壤有机质的稳定性不同，但所分离出的有机质组分不是组成和结构均一的化合物，而是具有某一特性的一类化合物的混合物．至今为止．所有用于分离有机质组分的方法仍然无法产生同质或功能相似的土壤有机质库，无法体现土壤特定的稳定机制．今后还需通过结合微生物标记、同位素标记等方法，从异质组分中区分出功能组分，这也将是土壤有机质分组未来研究的方向．
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| 关 键 词： | 土壤有机质 土壤有机碳 物理分组 化学分组 |
Advance of Research on Fractionation Methods of Soil Organic Matter |
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| MAO Yan-ling.Advance of Research on Fractionation Methods of Soil Organic Matter[J].Journal of Quanzhou Normal College,2008,26(6):70-75. |
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| Authors: | MAO Yan-ling |
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| Institution: | MAO Yan-ling (College of Resource and Environment,Fujian Agriculture and Forestry University,Fujian 350002,China) |
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| Abstract: | Soil organic matter(SOM) consists of various functional pools that are stabilized by specific mechanisms and have certain turnover rates.In the past,numerous fractionation schemes have been developed to separate and analyse such SOM fractions.Fractionation methods include physical and chemical separation of SOM Furthermore,combinations of fractionation methods are evaluated.The active SOM pool may best be represented by the soil microbial biomass,the light fraction organic matter and particulate organic matter.Most chemical and physical fractionations as well as combinations of methods yield SOM fractions that are not homogeneous in terms of turnover rates.The available fractionation methods do not correspond to specific stabilization mechanisms and hence do not describe functional SOM pools.The use of microbial biomarkers and compound-specific isotope analysis is important for future differentiation and evaluation of functional SOM fractions. |
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| Keywords: | soil organic matter soil organic carbon physical fractionation chemical fractionation |
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