Effects of eutrophication in drainage ditches

被引：0

作者：

Janse, JH ^{[1
]}

Van Puijenbroek, PJTM ^{[1
]}

机构：

[1] Natl Inst Publ Hlth & Environm, Lab Water & Drinking Water Res, NL-3720 BA Bilthoven, Netherlands

来源：

NITROGEN, THE CONFER-N-S | 1998年

关键词：

ditch; duckweed; eutrophication; nitrogen; phosphorus; macrophytes; model;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Eutrophication of drainage ditches by over-fertilization with nitrogen and phosphorus causes a shift from a mainly submerged aquatic vegetation to a dominance of duckweed. This causes anoxic conditions, loss of biodiversity and hampering of the agricultural functions of the ditches. Simulations with the model PCDitch, previously calibrated on experimental ditches, indicate that this switch may occur as soon as a certain threshold nutrient loading level is exceeded. This level tends to increase with the water depth. It is recommended to validate the model predictions in field situations.

引用

页码：547 / 552

页数：6

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