Nutrients in water of the Orhon River in the Arctic Ocean basin of Mongolia

被引：0

作者：

Batima, P ^{[1
]}

机构：

[1] Inst Meteorol & Hydrol, Ulaanbaatar 46, Mongolia

来源：

AGRICULTURAL EFFECTS ON GROUND AND SURFACE WATERS: RESEARCH AT THE EDGE OF SCIENCE AND SOCIETY | 2002年 / 273期

关键词：

ammonium; annual variations; arable farming; hydrochemistry; linear regression; nitrate; Orhon River; Mongolia; phosphate;

D O I：

暂无

中图分类号：

F3 [农业经济];

学科分类号：

0202 ; 020205 ; 1203 ;

摘要：

This paper discusses the hydrochemistry and nutrient concentrations of the Orhon River. The observed concentrations of nutrients are compared with the maximum acceptable concentration (MAC) standard for river water quality in Mongolia. The chemical composition is characterized by the dominance of bicarbonate and calcium which constitute more than 60% of the total salt content. Ammonium concentrations (N-NH4) contribute significantly to the nitrogen total. In the most downstream part of the Orhon River a slight increase in nitrate (N-NO3) and phosphate (P-PO43-) concentrations since 1980 has been observed. Based on these trends an annual increase is expected of 0.27 mg l(-1) for N-NO3 and 0.0 15 mg l(-1) for P-PO4-3.

引用

页码：373 / 378

页数：6

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