欢迎访问《环境监测管理与技术》编辑部网站！

文章摘要

巢湖沉积物中氮磷水平空间分布及污染状况评估

Spatial Distribution and Pollution Evaluation of Nitrogen and Phosphorus in Sediments in Chaohu Lake

DOI：

英文关键词: Sediments Total nitrogen Total phosphorus Spatial distribution Pollution evaluation Chaohu lake

基金项目:国家自然科学基金资助项目（41771122）

作者	单位
高芮	安徽省巢湖管理局湖泊生态环境研究院
张楠	中国科学院南京地理与湖泊研究所；湖北省生态环境监测中心站
张雷	中国科学院南京地理与湖泊研究所
黄麟	安徽省巢湖管理局湖泊生态环境研究院
钱华	安徽省巢湖管理局湖泊生态环境研究院

摘要点击次数: 16

全文下载次数: 2

中文摘要:

2018年在巢湖布设111个采样点，采集沉积物柱样，测定0 cm～10 cm和10 cm～20 cm柱样中总氮（TN）、总磷（TP）及相关基本指标，分析其污染水平和空间分布特征，并利用沉积物氮磷污染指数评估巢湖沉积物污染程度。结果表明：巢湖沉积物中TN和TP的质量比范围分别为117mg/kg～2 470mg/kg和142mg/kg～2 022mg/kg；巢湖西湖区北部、东湖区北部和东部湖湾为氮磷高值区，中湖区南部氮磷值最低；TN、TP污染指数和综合污染指数分别为021～437、031～435和044～383，巢湖沉积物污染程度为清洁—重度污染，西湖区污染程度最高，东湖区次之，中湖湖心最低。

英文摘要:

In 2018， 0 cm～10 cm and 10 cm～20 cm column sediment samples were collected from 111 sampling sites in Chaohu lake， total nitrogen（TN）， total phosphorus（TP） and other related indexes were determined to analyze their pollution levels and spatial distribution characteristics， and the pollution degree of Chaohu lake was evaluated by nitrogen and phosphorus pollution indexes. The results showed that the mass ratios of TN and TP in sediments in Chaohu lake ranged from 117 mg/kg to 2 470 mg/kg and 142 mg/kg to 2 022 mg/kg， respectively. High value areas of nitrogen and phosphorus were in the northern part of western and eastern regions of the lake， and eastern bay area. The lowest concentration of nitrogen and phosphorus was in the southern part of central region of the lake. The pollution index of TN and TP， and the comprehensive pollution index were 0.21～4.37， 0.31～4.35， and 0.44～3.83 respectively， indicating that the pollution degree of the sediments in Chaohu lake was clean heavy pollution. The western region of the lake had the highest pollution level， followed by the eastern region， and the center of the lake had the lowest.

查看全文查看/发表评论下载PDF阅读器

关闭