[1]李 强,韩成银,戴小琳,等.白马湖西北部湖区表层沉积物氮#磷形态分布特征及污染评价[J].江苏水利,2019,(12):11-17+22.
　LI Qiang,HAN Chengyin,DAI Xiaolin,et al.Distribution characteristics and pollution evaluation of nitrogen and phosphorus forms in surface sediments in the northwest lake area of Baima Lake[J].JIANGSU WATER RESOURCES,2019,(12):11-17+22.
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白马湖西北部湖区表层沉积物氮#磷形态分布特征及污染评价()
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《江苏水利》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2019年12期
页码:
11-17+22
栏目:
水生态与环境
出版日期:
2019-12-20

文章信息/Info

Title:
Distribution characteristics and pollution evaluation of nitrogen and phosphorus forms in surface sediments in the northwest lake area of Baima Lake
文章编号:
1007-7839(2019)12-0011-07
作者:
李 强1;  韩成银2;  戴小琳3;  华学坤2;  王永年2;  张 凯2;  田兴军1*
1.南京大学 生命科学学院, 江苏 南京 210023; 2.江苏省灌溉总渠管理处, 江苏 淮安 223200; 3.江苏省水利厅工管处, 江苏 南京 210029
Author(s):
LI Qiang1;  HAN Chengyin2;  DAI Xiaolin3;  HUA Xuekun2;  WANG Yongnian2; ZHANG Kai2;  TIAN Xingjun1*(1.School of Life Sciences;  Nanjing University;  Nanjing 210023;  Jiangsu; 2.Main Irrigation Channel Management Division of Jiangsu Province;  Huaian 223200;  Jiangsu; 3.Project Management Office of Water Resources Department of Jiangsu Province;  Nanjing 210029;  Jiangsu)
1.School of Life Sciences, Nanjing University, Nanjing 210023, Jiangsu; 2.Main Irrigation Channel Management Division of Jiangsu Province, Huaian 223200, Jiangsu; 3.Project Management Office of Water Resources Department of Jiangsu Province, Nanjing 210029, Jiangsu
关键词:
沉积物;  氮磷形态;  污染评价;  白马湖
Keywords:
sediment;  nitrogen and phosphorus species;  pollution assessment;  Baima Lake
分类号:
X52; X824
文献标志码:
B
摘要:
为了解退圩还湖后的白马湖典型湖区表层沉积物营养盐形态赋存特征及污染程度,于2019年1月采集了白马湖西北湖区9个样点的表层沉积物,利用化学提取法和SMT法分别分析了表层沉积物中的氮、磷形态。结果表明:表层沉积物总氮含量为466.70 ～ 547.01 mg/kg,以有机氮为主; 总磷含量为325.59 ～ 841.24 mg/kg,以无机磷为主。不同氮形态与总氮均不存在显著的相关性关系,不同磷形态与总磷均存在显著的相关性关系。总体上各河流入湖口的无机氮、总磷和不同磷形态含量均高于湖区开阔水域,各河流入湖口沉积物污染程度也高于开阔水域。其中,水生植物种植区周围(5号取样点)表层沉积物综合污染程度最轻,浔河口(9号取样点)表层沉积物综合污染程度最严重。因此,白马湖的水污染问题主要由外源污染引起,其治理与修复仍需加强控源截污工作,同时,合适的生态净化工程实施对缓解白马湖的水污染具有良好效果。
Abstract:
In order to understand the nutrient salt occurrence characteristics and pollution degree of surface sediments in the typical lake area of Baima Lake after retuning polder land to lake, the surface sediments of 9 samples in the northwest lake area of Baima Lake were collected in January 2019, and the nitrogen and phosphorus forms in surface sediments were respectively analyzed by chemical extraction and SMT methods. The results showed that contents of total nitrogen ranged from 466.70 mg/kg to 547.01 mg/kg, and the main species was organic nitrogen. The contents of total phosphorus ranged from 325.59 mg/kg to 841.24 mg/kg, and the main species was inorganic phosphorus. The correlation analysis showed that no notable correlations between different nitrogen species and total nitrogen but notable correlations between different phosphorus species and total phosphorus were displayed. In general, the contents of inorganic nitrogen, total phosphorus and various species of phosphorus in the inlets of the rivers were higher than those in the open waters, and the pollution levels of the surface sediments in the inlets of the rivers were higher than those in the open waters as well. Among them, the lowest integrated pollution level of the surface sediment was near the macrophyte planting area(5th sample site), but the most serious was the inlet of Xunhe River(9th sample site). Therefore, the water pollution in Baima Lake was mainly caused by exogenous pollution, and its source control and interception of pollutants entering the lakes should still need to be strengthened. Meanwhile, appropriate ecological lake cleaning projects would also have a good effect on alleviating the water pollution in Baima Lake.

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备注/Memo

备注/Memo:
收稿日期:2019-09-16
基金项目:江苏省水利科技项目(ZQ201817)
作者简介:李强(1995-),男,硕士研究生在读,研究方向为湖泊生态修复。
更新日期/Last Update: 2019-12-20