| 金沙江一级支流龙川江水体氮磷含量动态变化分析 |
| The Variations of Nitrogen and Phosphorus Concentrations in the Longchuan River- a tributary of the Jinsha River |
| 投稿时间：2009-09-02 修订日期：2010-03-29 |
| DOI： |
| 中文关键词:龙川江 氮 磷 含量 |
| 英文关键词:Longchuan River nitrogen phosphorus concentration |
| 基金项目:亚太全球变化研究网络项目(IPN) |
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| 中文摘要: |
| ２００７～２００９年在龙川江楚雄水文站进行采样分析，对龙川江氮（Ｎ）、磷（Ｐ）含量变化及输出特征进行了研究。结果表明，总氮（ＴＮ）和总磷（ＴＰ）月均含量分别为１．０８８～３．８３４ｍｇ／Ｌ和０．０９１～２．０３６ｍｇ／Ｌ；其中，Ｎ以ＮＯ３－ －Ｎ为主，占总氮含量的３９．４％ ～９３．７％；Ｐ输出以颗粒态磷（ＰＰ）为主，占ＴＰ的
９３．６％。ＴＮ、ＮＨ４＋ －Ｎ和ＮＯ３－ －Ｎ的含量随着流量增大而呈现出先升高、后降低的趋势，据此分析流域内主要的Ｎ源为农业面源污染；总磷含量随悬浮物含量和流量的升高而升高，且相互之间存在着极其显著的正相关关系。控制雨季土壤的冲刷侵蚀是有效控制磷径流输出的最重要方式。 |
| 英文摘要: |
| The study was carried out in Chuxiong station from 2007 to 2009，in order to illustrate characteristics of nitrogen and phosphorus. The mean concentration of total nitrogen(TN) were 1 .088-3.834 mg/L，and mean content of total phosphorus(TP) was about 0. 091-2.036 mg/L，accounted for 39.4 percent to 93.7 percent, and more than 93. 6 percent of the total phosphorus was in form of particle phosphorus (PP). TN , NH4+-N and NO3—N were correlated well with water discharge first and then deviation，Conclude that the various forms of nitrogen in Longchuan River comes from the farm pollution. There existed positive relationships between total phosphorous and water discharge; therefore soil erosion control should be an effective countermeasure in limiting nitrogen and phosphorus loss in the rainy season.
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| 何敏,周 跃,吕喜玺,Ａｌａｎｚｉｅｇｌｅr,Ａｌａｎ-ｚｉｅｇｌｅr.2010.金沙江一级支流龙川江水体氮磷含量动态变化分析[J].水生态学杂志,31(4):33-37. |
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