A Study on Eutrophication and Balance of Nitrogen and Phosphorus in Urban Lakes -Taking No.1 Area of Qingshan Lake in Huangshi City, Hubei Province as a Case

Shi Yuqi; Wu Xiaodong; Ge Xuguang; Zhou Mengdie; Wu Chao; Qin Yuan; Tan Ya

doi:10.13961/j.cnki.stbctb.2020.03.030

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A Study on Eutrophication and Balance of Nitrogen and Phosphorus in Urban Lakes -Taking No.1 Area of Qingshan Lake in Huangshi City, Hubei Province as a Case

- A Study on Eutrophication and Balance of Nitrogen and Phosphorus in Urban Lakes -Taking No.1 Area of Qingshan Lake in Huangshi City, Hubei Province as a Case
- Bulletin of Soiland Water Conservation Vol. 40, Issue 3, Pages: 208-215(2020)
- 作者机构：
  
  1. 湖北师范大学城市与环境学院,湖北,黄石,435002
  2. 黄石市土壤污染防治重点实验室,湖北,黄石,435002
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2020.03.030
  CLC： X832
- Published：2020
- 稿件说明：
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Shi Yuqi, Wu Xiaodong, Ge Xuguang, et al. A Study on Eutrophication and Balance of Nitrogen and Phosphorus in Urban Lakes -Taking No.1 Area of Qingshan Lake in Huangshi City, Hubei Province as a Case[J]. Bulletin of Soiland Water Conservation, 2020, 40(3): 208-215.
DOI：

Shi Yuqi, Wu Xiaodong, Ge Xuguang, et al. A Study on Eutrophication and Balance of Nitrogen and Phosphorus in Urban Lakes -Taking No.1 Area of Qingshan Lake in Huangshi City, Hubei Province as a Case[J]. Bulletin of Soiland Water Conservation, 2020, 40(3): 208-215. DOI： 10.13961/j.cnki.stbctb.2020.03.030.

摘要

[目的

]

监测分析湖北省黄石市青山湖上游区域水质状况，为其生态修复提供依据。[方法

]

以青山湖1

子湖区为例，采用综合营养状态指数法对其富营养化水平进行评价，依据物质平衡原理估算出青山湖上游区域氮磷收支状况。[结果

]

①青山湖上游区域水体总氮、总磷年均浓度为2.45，0.200 mg/L；②青山湖上游区域水体达到中度富营养化水平；③上游来水是氮磷入湖主要来源；④氮入湖总量6 115.40 kg/a，出湖总量1 939.51 kg/a；⑤磷入湖总量411.14 kg/a，出湖量总量198.21 kg/a；⑥总磷、总氮截留率分别为68.28%，51.79%。[结论

]

为防止青山湖上游区域富营养化程度加重，建议对上游来水采用生态浮床的措施，在净化水质，达到外源清水入湖的同时还能改善景观。在排口附近湖水区域，可采取高效原位强化净化处理措施。

Abstract

[Objective] The water quality in the upper area of Qingshan Lake in Huangshi City

Hubei Province was monitored and analyzed to provide a basis for its ecological restoration.[Methods] Taking No.1 area of Qingshan Lake as a case study

using a comprehensive trophic status index

the state of eutrophication in upper area of Qingshan Lake was evaluated

and the nitrogen and phosphorus balance was estimated according to the material balance principle.[Results] ① The concentration of total nitrogen and total phosphorus reached 2.45 and 0.200 mg/L

respectively. ② The water quality of Qingshan Lake reached a level of moderate eutrophication. ③ The input of P and N mainly came from the upper stream. ④ The total input amount of N was 6 115.40 kg per year

and the total output amount of N was 1 939.51 kg per year. ⑤ The total input amount of P was 411.14 kg per year

and the total output amount of P was 198.21 kg per year. ⑥ The rates of retained N and P were 68.28% and 51.79%

respectively.[Conclusion] According to the results

to prevent the eutrophication of Qingshan Lake

an ecological floating bed for the upstream water should be adopted

which will simultaneously purify the water and improve the landscape. In the lake water area near the discharge outlet

high-efficiency in situ enhanced purification measures could be adopted.

关键词

Keywords

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