长江流域资源与环境 >> 2019, Vol. 28 >> Issue (02): 396-406.doi: 10.11870/cjlyzyyhj201902016

• 生态环境 • 上一篇    下一篇

城市湖泊有机质氮同位素差异及其对水污染的指示作用分析
#br#

张思思1,徐飘1,杨正健1*,马骏1*,唐咏春1,2,刘德富1   

  1. (1.湖北工业大学土木建筑与环境学院,河湖生态修复与藻类利用湖北省重点实验室,湖北 武汉430068;
    2.三峡大学水利与环境学院,湖北 宜昌443002)
  • 出版日期:2019-02-20 发布日期:2019-02-25

Nitrogen Isotopic Difference of Organic Matter in Urban Lakes and Its Indication to Water Pollution

ZHANG Si-si1, XU Piao1, YANG Zheng-jian1, MA Jun1, TANG Yong-chun1,2, LIU De-fu1   

  1. (1. College of Civil Construction and Environment, Hubei Key Laboratory of Ecological Restoration of 
    River-Lakes and Algal Utilization, Hubei University of Technology, Wuhan 430068, China; 
    2. College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China)
  • Online:2019-02-20 Published:2019-02-25

摘要:  如何对湖泊生态环境修复效果进行评价是当前湖泊生态修复工作的难点所在,以武汉市内不同修复状态湖泊为研究对象,通过分析湖泊水体营养盐浓度、水质类别、综合营养状态指数TLI(Σ)与湖泊不同有机质δ15N的关系,探讨以水体中某一有机质δ15N指示城市湖泊水污染状态,进而作为湖泊修复效果评价指标的可行性。结果表明:武汉南湖、东湖、内沙湖水质分别为劣Ⅴ类、Ⅳ类、Ⅲ类;水体富营养化程度分别为重度富营养、轻度富营养、中营养;南湖有机质δ15N均值最高为13.193‰(8.394‰~19.380‰);东湖δ15N次之为8.191‰(5.162‰~13.488‰);内沙湖δ15N最低为2.940‰(0.001‰~6.433‰)。不同湖泊有机质δ15N与表层水 c(TN)、c(DIN)、c(NH+4-N)、c(TP)、水质类别和TLI(Σ)呈正相关趋势,其中悬浮有机质、沉水植物δ15N与水污染参数的相关性最为显著,均能有效表征城市湖泊水污染状态;为了采样的简便性及样品的通用性,建议以悬浮有机质δ15N作为城市湖泊水污染状态及水环境治理效果的快速评价指标。

Abstract: How to evaluate the restoration effect of lakes is the difficulty of ecological restoration. By analyzing the relationship among nutrient concentration, water quality, comprehensive trophic level index TLI(Σ) and nitrogen isotope ratios(δ15N) of different organic matter in urban lakes with different restoration states in Wuhan, the feasibility of using the δ15N values of a certain organic matter in water to indicate the water pollution state of urban lakes, and then as an evaluation index of restoration effect was studied. As the result revealed, the water quality of South Lake, East Lake and inner Shahu Lake was below class Ⅴ, Ⅳ and Ⅲ respectively; the eutrophication degree was severe eutrophication, light eutrophication and mesotrophication respectively. The average δ15N value of organic matter in South Lake was 13.193‰(8.394‰~19.380‰) and the highest,  followed by the East Lake of 8.191‰(5.162‰~13.488‰) and the inner Shahu Lake of 2.940‰(0.001‰ ~6.433‰) in the lowest place. The δ15N values of organic matter in different lakes were positively correlated with the concentration of total nitrogen(TN), dissolved inorganic nitrogen(DIN), ammonia nitrogen(NH4+-N), total phosphorus(TP), water quality and TLI(), among which, the correlation among the δ15N value of suspended organic matter, δ15N value of submerged macrophyte and water pollution parameters was the most significant, these all could effectively characterize the water pollution state of urban lakes. For the convenience of sampling and the generality of the samples, it is suggested that the δ15N of suspended organic matter should be used as a rapid evaluation index for the water pollution state and the effect of water environment treatment.

No related articles found!
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 刘爱霞,刘正军,王 静. 基于PCA变换和神经元网络分类方法的中国森林制图研究[J]. 长江流域资源与环境, 2006, 15(1): 19 -24 .
[2] 王琳, 朱天明, 杨桂山, 苏伟忠. 基于GIS空间分析的县域建设功〖JP2〗能空间分区研究——以江苏省昆山市为例[J]. 长江流域资源与环境, 2010, 19(7): 125 .
[3] 何报寅, 丁超, 徐贵来, 刘红卫, 刘杰, 张晴. 基于MODIS的武汉城市圈地表温度场特征[J]. 长江流域资源与环境, 2010, 19(12): 1379 .
[4] 朱明勇, 谭淑端, 张全发. 基于GIS和USLE的小流域土壤侵蚀定量评价[J]. 长江流域资源与环境, 2013, 22(12): 1572 .
[5] 张晓艳, 刘梅先. 洞庭湖流域高温热浪风险变化特征[J]. 长江流域资源与环境, 2015, 24(10): 1729 -1735 .
[6] 王钊, 杨山, 刘帅宾. 基于DMSP/OLS数据的江苏省城镇人口空间分异研究[J]. 长江流域资源与环境, 2015, 24(12): 2021 -2029 .
[7] 赵丽, 姜霞, 王雯雯, 王书航, 常乐, 陈俊伊. 丹江口水库表层沉积物不同形态氮的赋存特征及其生物有效性[J]. 长江流域资源与环境, 2016, 25(04): 630 -637 .
[8] 胡继亮 熊自洁 张悦 高婷. 2019年2期自然灾害水平对农户投保意愿的影响分析——基于湖北微观调查数据[J]. 长江流域资源与环境, 0, (): 0 .
[9] 王凯, 王玉杰, 王彬, 张守红, 王云琦, 王晨沣. 黄壤坡面土壤分离速率研究[J]. 长江流域资源与环境, 2018, 27(09): 2114 -2121 .
[10] 潘超, 周驰, 苗滕, 刘林峰, 高健, 焦一滢, 李祝, 张佳敏, 王卉君, 徐德雄. 长江流域鄂西四河流大型底栖动物群落结构特征及水质生物学评价[J]. 长江流域资源与环境, 2018, 27(11): 2529 -2539 .