• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Wetlands amp; Remediation Salt Lake City, Utah, November 16-17, 1999 >Assessment of sewage-derived phosphorus input to the point pelee marsh
【24h】

Assessment of sewage-derived phosphorus input to the point pelee marsh

机译：评估点皮利沼泽的污水中磷的输入

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

One of the finest surviving marshes on the Great Lakes is Point Pelee National Park. Excessive loadings of nutrients resulted in hyper-eutrophic conditions in some of the open-water ponds in the marsh. A multi-disciplinary study was initiated to identify sources of nutrients to the marsh. The septic system in the park was one of potential sources considered, as it has been documented that nutrients from septic systems can be transported considerable distances by contaminated groundwater, and there is a close link between groundwater and wetlands. Spatial and stratigraphic differences in sediment P distribution were investigated and related to distribution of a sewage specific molecular marker, coprostanol, to assess the potential sewage-derived nutrient inputs to the marsh. Elevated concentrations of phosphorus and coprostanol were observed in nearshore sediments, suggesting that the nearshore area was impacted by sewage-derived input. The ratios of terrigenous to aquatic n-alkanes (TAR_(HC)), which were used to discern the sources of the sedimentary organic matter suggest that the observed spatial differences in sediment P concentrations could not be attributed to different character of marsh organic matter. Rather, as suggested by the coprostanol distribution, the elevated phosphorus concentrations in the nearshore sediments may be attributed to sewage-derived input.
机译：五角湖上幸存的最美好的沼泽之一是波利角国家公园。沼泽中一些开放水域中过多的营养物导致了富营养化状况。发起了一项多学科研究，以鉴定沼泽的养分来源。公园中的化粪池系统是考虑的潜在来源之一，因为据文献记载，化粪池系统中的养分可以被受污染的地下水运输相当远的距离，并且地下水和湿地之间存在紧密的联系。研究了沉积物P分布的空间和地层差异，并将其与污水特异性分子标记物coprostanol的分布有关，以评估潜在的污水来源的养分输入沼泽。在近岸沉积物中观察到磷和coprostanol的浓度升高，表明近岸地区受到污水来源输入的影响。用于识别沉积有机物来源的陆源与水相正构烷烃（TAR_（HC））的比率表明，观测到的沉积物P浓度的空间差异不能归因于沼泽有机质的不同特征。相反，如前前列腺素分布所暗示的那样，近岸沉积物中磷浓度的升高可能归因于污水来源的输入。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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