• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Heavy Metal Pollution of Lakes along the Mid-Lower Reaches of the Yangtze River in China: Intensity Sources and Spatial Patterns
【2h】

Heavy Metal Pollution of Lakes along the Mid-Lower Reaches of the Yangtze River in China: Intensity Sources and Spatial Patterns

机译：中国长江中下游地区湖泊的重金属污染：强度来源和空间格局

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Lakes in the middle and lower reaches of the Yangtze River form a shallow lake group unique in the World that is becoming increasingly polluted by heavy metals. Previous studies have largely focused on individual lakes, with limited exploration of the regional pattern of heavy metal pollution of the lake group in this area. This paper explores the sources, intensity and spatial patterns of heavy metal pollution of lake sediments. A total of 45 sample lakes were selected and the concentrations of key metal elements in the sediments of each lake were measured. The cluster analysis (CA), principal component analysis (PCA) and Geo-accumulation index (Ig) analysis permitted analysis of the source and pollution intensity of the target lakes. Results suggested a notable spatial variation amongst the sample lakes. Lakes in the upper part of the lower reach of the Yangtze River surrounded by typical urban landscapes were strongly or extremely polluted, with high concentrations of Pb, Zn, Cu and Cd in their sediments. This was attributed to large amount of untreated industrial discharges and municipal sewage produced within the lake catchments. In contrast, the heavy-metal pollution of lakes in the Taihu Delta area was notably lower due to industrial restructuring and implementation of effective environmental protection measures. Lakes along the middle reach of Yangtze River surrounded by agricultural areas were unpolluted to moderately polluted by heavy metals overall. Our results suggested that lakes in the central part of China require immediate attention and efforts should be made to implement management plans to prevent further degradation of water quality in these lakes.
机译：长江中下游的湖泊形成了世界上独一无二的浅湖群，被越来越多的重金属污染。先前的研究主要集中在单个湖泊上，而对该区域湖泊群重金属污染的区域模式的探索却很少。本文探讨了湖泊沉积物中重金属污染的来源，强度和空间格局。总共选择了45个样本湖，并测量了每个湖沉积物中关键金属元素的浓度。聚类分析（CA），主成分分析（PCA）和地积累指数（Ig）分析允许对目标湖泊的来源和污染强度进行分析。结果表明样本湖之间存在明显的空间变化。长江下游的湖泊被典型的城市景观所包围，受到严重或极度污染，沉积物中的铅，锌，铜和镉含量很高。这归因于湖泊流域内大量未经处理的工业废水和市政污水。相反，由于产业结构调整和有效的环境保护措施的实施，太湖三角洲湖泊的重金属污染明显降低。长江中游地区被农业区包围的湖泊总体上未被重金属污染。我们的结果表明，中国中部的湖泊需要立即引起重视，应努力执行管理计划，以防止这些湖泊的水质进一步恶化。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号