土地利用对河流中溶解性有机质(DOM)的影响研究

Research on the Impact of Land Use on Dissolved Organic Matter(DOM)in Rivers

溶解性有机质是河流生态系统中重要的一部分,其组成可在一定程度上影响水环境中的生物地球化学过程。不同的土地利用类型会使土壤中有机质组分存在差异,使得由陆源向河流中的输入发生变化,进而影响河流中溶解性有机质的组成和来源等。因此,本文阐述了溶解性有机质的组成及来源等,分析了森林、农业、城市建设用地以及水利设施建设等不同土地利用方式对河流中溶解有机质的组成及来源的影响,最后提出了几点展望。

Dissolved organic matter is an important part of the river ecosystem,and its composition can affect the biogeochemical process in the waters to a certain extent.Different types of land use will cause differences in the composition of organic matter in the soil,causing changes in the input from land sources to rivers,which in turn affects the composition and source of dissolved organic matter in rivers.Therefore,this article expounds the compositions and sources of dissolved organic matter,analyzes the impact of forest,agriculture,urban construction land and water conservancy facility construction on the composition and source of dissolved organic matter in rivers,and finally puts forward a few points about the prospect of land use in the research of dissolved organic matter.