Water quality of an intensive agricultural watershed in Quebec

被引：24

作者：

Lapp, P ^{[1
]}

Madramootoo, CA ^{[1
]}

Enright, P ^{[1
]}

Papineau, F ^{[1
]}

Perrone, J ^{[1
]}

机构：

[1] McGill Univ, Dept Agr & Biosyst Engn, St Anne De Bellevue, PQ H9X 3V9, Canada

来源：

JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION | 1998年 / 34卷 / 02期

关键词：

agricultural hydrology; nonpoint source pollution; surface water hydrology; water quality; watershed management; nitrogen; phosphorus; seasonal variation; sediment;

D O I：

10.1111/j.1752-1688.1998.tb04146.x

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Under a watershed based approach being examined by the Quebec Ministry of Agriculture to accelerate the adoption of conservation practices, a study on the impacts of agricultural practices on the St. Esprit watershed was initiated in the fall of 1993. The water quality of this 26 km(2) intensive agricultural watershed was studied over an 18 month period. Water samples taken at the outlet of the watershed were analyzed for nitrate, phosphate, suspended sediment, and atrazine. Water quality data were analyzed to establish seasonal trends in pollutant concentration and load in the watercourse. Spring snowmelt was identified as a significant period of pollutant material export. All pollutant materials displayed seasonal variability in the export process. Peak pollutant concentrations were associated with high flow events. Mean observed pollutant concentrations did not exceed drinking water quality standards.

引用

页码：427 / 437

页数：11

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