三峡水库成库初期氮、磷分布特征

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三峡水库成库初期氮、磷分布特征

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- 三峡水库成库初期氮、磷分布特征
- Distribution Features of Nitrogen and Phosphorus in Incipient Three Gorges Reservoir
- 水土保持学报 2005年第4期页码：123-126
- 作者机构：
- 作者简介：
- 基金信息：
  
  重庆市自然科学基金资助项目（CSTC.2004BB7075）,中-意合作项目“三峡库区生态环境调查及评价”
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- 纸质出版：2005
- 稿件说明：
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三峡水库成库初期氮、磷分布特征[J]. 水土保持学报, 2005,(4):123-126.

Distribution Features of Nitrogen and Phosphorus in Incipient Three Gorges Reservoir[J]. 2005, (4): 123-126.
三峡水库成库初期氮、磷分布特征[J]. 水土保持学报, 2005,(4):123-126. DOI：

Distribution Features of Nitrogen and Phosphorus in Incipient Three Gorges Reservoir[J]. 2005, (4): 123-126. DOI：

摘要

三峡库区及其上游区是我国水土流失的重要地区。2003年6～12月三峡水库成库后，在三峡水库设置6个水平监测断面和2个垂直断面，每月对营养盐（NH3－N，NO2－N，NO3－N，TN，TP）进行浓度监测。结果表明，6个测点表层水NH3－N，NO2－N、NO3－N，TN，TP含量均值分别为0.11mg／L，0.019mg／L，1.28mg／L，1.62mg／L，0.13mg／L。沿水流方向TN浓度逐渐增高，TP浓度逐渐降低。在同一位置垂直方向按3个不同水深（表层、0.6倍水深和0.8倍水深）设置测点。连续7个月测试结果表明，营养盐在垂直方向上差异不明显。总磷浓度变化与流量变化有很大关系，总磷浓度最大值均出现在丰水期，最小值为枯水期。

Abstract

The Three Gorges and upstream areas is the most severe soil erosion areas in China. The concentration of NH_3-N

NO_2-N

NO_3-N

TN and TP were determined every month during June to December in 2003.Six horizontal monitoring sites and two vertical sites were set in Three Gorges reservoir. The results showed that the six surface layer water mean concentration of NH_3-N

NO_2-N

NO_3-N

TP were 0.11 mg/L

0.019 mg/L

1.28 mg/L

1.62 mg/L

0.13 mg/L respectively. Along the flow direction

the concentration of TP were depressed distinctly and TN were increased. There were not the trend on NO_2-N

NO_3-N and NH_3-N.According to different depth (surface

0.6depth and 0.8depth)

three monitoring sites were set in the direction of vertical. Through successive seven months monitoring

it indicated concentration of nutrient were not variety distinctly. Changing of phosphorus concentration was related to flow of the river. The maximum of total phosphorus was appeared in high flow season

and the minimum was appeared in low flow season.

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三峡水库成库初期氮、磷分布特征