陆地生态系统中人为因素对DOM影响研究进展  

Effects of anthropogenic factors on dissolved organic matter in terrestrial ecosystem:A review.

作　　者：卢萍[1] 杨林章[1] 

机构地区：[1]中国科学院南京土壤研究所,南京210008

出　　处：《生态学杂志》2005年第11期1308-1313,共6页Chinese Journal of Ecology

基　　金：中国科学院知识创新工程资助项目(KZCX2-413)

摘　　要：尽管DOM和WEOM只占土壤有机质的一小部分,却是土壤溶液的重要组成部分,参与众多土壤过程。本文着重介绍DOM和WEOM的定义、研究方法及森林和农田两种不同生态系统中DOM和WEOM的研究现状及耕作、施肥等农业措施对DOM和WEOM的影响。已有研究主要集中于DOC,而缺乏对DON、DOP的研究,且研究方法间差异较大。森林生态系统DOM/WEOM含量要高于草地和耕地。土地利用方式变化对DOM的影响主要取决于改变后的土地利用方式。管理措施对DOM/WEOM通常只有短暂的影响,且不同因素作用结果不一。Dissolved organic matter （DOM） and water-extractable organic matter （WEOM） are the main components of soil solution and involve in many soil processes, though they only account for a small part of soil organic matter. This review introduced the definitions of DOM and WEOM, their research methodology, and their dynamics under effects of land use and management practices, especially in forest-and agro-ecosystem. Many researches were focused on DOC, while the studies on DON and DOP were quite few. Forest land had a larger DOM/ WEOM concentration than grassland and farmland, and the effects of land use changes on DOM/WEOM mainly depended on the changed land use pattern. The effects of management practices on DOM/WEOM were usually of short-term and inconsistent.

关 键 词：DOM 土地利用 管理措施 

分 类 号：Q14[生物学—生态学]