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作 者 ：徐宏伟,王效科,欧阳志云,冯兆忠

期 刊 ：生态学报 2005年 25卷 7期 页码：1720~1724

关键词：三江平原；小叶章；模拟；净化；去除率；

Keywords:Sanjiang Plain, Deyeuxia angustifolia, simulated, purification, removal rate,

摘 要 ：模拟研究三江平原小叶章湿地生态系统对N、P的净化规律。结果表明,在小叶章生长期和成熟期,模拟系统对N、P的去除率随时间变化呈负指数型增长,最高去除率在实验初期分别达到93.26%、98.98%;在净化过程中,P的加入会促进模拟系统对N的吸收,并减缓其对N净化能力的衰退幅度,而模拟系统对P的净化不受N输入的影响。基于小叶章生态系统中N、P营养元素的分配和循环,小叶章对N元素的净化效应大于P元素,土壤子系统对P元素的净化起主导作用,整个模拟系统对N、P元素的净化效果很显著,总净化率分别可达53.11%、58.95%。该结果为东北地区湿地净化功能的研究和非点源污染的治理提供理论根据。

Abstract:It is important to better understand the nutrient distribution and circulation of the Deyeuxia angustifolia wetland in Sanjiang Plain, as this ecosystem plays a unique role in the ecological service functions of the region. However, little attention has been paid to the purification function of the wetlands in the Sanjiang Plain. Due to the agricultural exploitation since 1950‘s, over-fertilization has resulted severe in non-point pollution in the region. A potted plant experiment was conducted in Sanjiang ...

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