Effects of Ecological Ditch Interception of Nitrogen and Phosphorus in Water Source Area of Hanjiang River

LIU Quan; LI Zhanbin; LI Peng; DONG Tingxu; HUANG Wenjun

doi:10.13961/j.cnki.stbctb.2016.02.011

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Effects of Ecological Ditch Interception of Nitrogen and Phosphorus in Water Source Area of Hanjiang River

- Effects of Ecological Ditch Interception of Nitrogen and Phosphorus in Water Source Area of Hanjiang River
- Bulletin of Soiland Water Conservation Vol. 36, Issue 2, Pages: 54-58(2016)
- 作者机构：
  
  1. 绵阳师范学院,四川,绵阳,621000
  2. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
  3. 西安理工大学,陕西,西安,710048
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2016.02.011
  CLC：
- Published：2016
- 稿件说明：
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LIU Quan, LI Zhanbin, LI Peng, et al. Effects of Ecological Ditch Interception of Nitrogen and Phosphorus in Water Source Area of Hanjiang River[J]. Bulletin of Soiland Water Conservation, 2016, 36(2): 54-58.
DOI：

LIU Quan, LI Zhanbin, LI Peng, et al. Effects of Ecological Ditch Interception of Nitrogen and Phosphorus in Water Source Area of Hanjiang River[J]. Bulletin of Soiland Water Conservation, 2016, 36(2): 54-58. DOI： 10.13961/j.cnki.stbctb.2016.02.011.

摘要

[目的

]

研究汉江水源区生态沟渠对径流氮、磷的生态拦截效应

为农业非点源污染的控制提供重要参考和依据。[方法

]

设置生态沟渠在不同时间对不同断面水体进行监测。[结果

]

同段沟渠内

侧面外来水对沟渠径流氮浓度变化影响比磷浓度变化明显;径流TN

-N浓度在上游、中游和下游断面变异系数分别达到19.81%~31.88%

9.57%~16.73%和32.14%~42.81%;NH

-N和TP在4个断面变异系数在33.33%~88.46%范围内变化;生态沟渠断面之间

水草拦截净化沟渠段氮、磷含量降低幅度在9.52%~31.11%。[结论

]

沟渠生态拦截对径流氮素净化效果较明显

同时适当布局拦沙工程可以削减磷素流失。

Abstract

[Objective] Studying the ecological ditch interception for reducing nitrogen and phosphorus in water source area of Hanjiang River in order to provide reference and basis for agricultural non-point source pollution control. [Methods] Ditch water of different sections was monitored at different times of rain events to study the intercept effectiveness of nitrogen and phosphorus. [Results] Nitrogen concentration was more greatly influenced by extraneous water from the ditch side than that of phosphorus at the same section. The variance coefficients of TN and NO3-N concentrations were 19.81%~42.81%

9.57%~16.73% and 32.14%~42.81% at the upstream

middle and lower section

respectively. The variance coefficients of NH4+-N and TP were 33.33%~88.46% at four sections. Aquatic plant interception decreased the nitrogen and phosphorus concentrations by 9.52%~31.11%. [Conclusion] Ecological ditch can intercept nitrogen obviously. Meanwhile

some sand interception projects should be arranged appropriately for controlling phosphorus loss.

关键词

Keywords

references

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