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本文为近三十年来有关土壤低分子量有机酸研究的扼要回顾。主要综述了森林和农业土壤中低分子量有机酸的组成特点、数量、来源及影响因素;侧重阐述了其在土壤矿物风化与形成、养分活化与迁移、土壤酸化与铝毒、以及与重金属相互作用等一系列物理和化学的影响机制;并提出了进一步研究需关注的问题。
This article is a brief review of the research on soil low molecular weight organic acids in the past three decades. The characteristics, quantity, sources and influential factors of low molecular weight organic acids in forest and agricultural soils were reviewed. The emphasis was put on the mineralization and formation of soil minerals, nutrient activation and migration, soil acidification and aluminum toxicity, and their interactions with heavy metals And a series of physical and chemical impact mechanisms; and put forward further research needs attention.