陆地生态系统中人为因素对DOM影响研究进展

摘要/Abstract

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。

关键词: 树木生长势, 松墨天牛, 种群密度, 松材线虫病, 发病程度, 相关系数

Abstract: 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.

Key words: Pine growth potential, Monochamus alternatus, Population density, Pathogenicity, Bursaphlenchus xyloophilus, Correlation coefficient

中图分类号:

卢萍, 杨林章. 陆地生态系统中人为因素对DOM影响研究进展[J]. 生态学杂志, 2005, (11): 1308-1313.

LU Ping, YANG Linzhang. Effects of anthropogenic factors on dissolved organic matter in terrestrial ecosystem:A review[J]. cje, 2005, (11): 1308-1313.

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