土壤团聚体与有机碳稳定机制的研究进展

被引：165

作者：

徐香茹

汪景宽

机构：

[1] 沈阳农业大学土地与环境学院

来源：

土壤通报 | 2017年 / 48卷 / 06期

关键词：

土壤; 有机碳; 团聚体; 稳定机制;

D O I：

10.19336/j.cnki.trtb.2017.06.35

中图分类号：

S152 [土壤物理学]; S153.6 [土壤成分];

学科分类号：

090301 [土壤学];

摘要：

土壤不同稳定机制(物理、化学、生物)的有机碳是土壤中主要的物质基础,在土壤的各方面特性中都发挥着巨大的作用。土壤固定外源碳的能力与土壤中团聚体的组成息息相关。团聚体的评价指标很多,但其中应用最广泛的是:水稳性团聚体的数量、平均重量直径(MWD)、平均重量直径变化值和分形维数(fractal dimension,D)。相比土壤总有机碳(SOC),土壤物理、化学、生化的不同稳定机制团聚体有机碳在外界条件变化时,能够更好更快的反映土壤质量的变化。本文重点阐述了目前土壤团聚体形成与稳定机制以及不同稳定机制下的有机碳分离技术研究进展,并提出未来土壤团聚体与有机碳方面的研究重点。

引用

页码：1523 / 1529

页数：7

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