• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of the American Water Resources Association >A National Assessment of the Potential Linkage between Soil, and Surface and Groundwater Concentrations of Phosphorus
【24h】

A National Assessment of the Potential Linkage between Soil, and Surface and Groundwater Concentrations of Phosphorus

机译：国家对土壤与磷的表面和地下水浓度之间潜在联系的评估

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

A meta-analysis of three national databases determined the potential linkage between soil and surface and groundwater enrichment with phosphorus (P). Soil P was enriched especially under dairying commensurate with an increase in cow numbers and the tonnage of P-fertilizers sold. Median P concentrations were enriched in surface waters receiving runoff from industrial and dairy land uses, and in groundwater beneath dairying especially in those aquifers with gravel or sand lithology, irrespective of groundwater redox status. After geographically pairing surface and groundwater sites to maximize the chance of connectivity, a subset of sites dominated by aquifers with gravel and sand lithology showed increasing P concentrations with as little as 10years data. These data raise the possibility that groundwater could contribute much P to surface water if: there is good connectivity between surface and groundwater, intensive land use occurs on soils prone to leaching, and leached-P is not attenuated through aquifers. While strategies are available to mitigate P loss from intensive farming systems in the short-term, factors such as enriched soils and slow groundwater may mean that despite their use, there will be a long-term input (viz. legacy), that may sustain surface water P enrichment. To avoid poor surface water quality, management and planning may need to consider the connectivity and characteristics of P in soil-groundwater-surface water systems.
机译：对三个国家数据库的荟萃分析确定了土壤和地表以及地下水中磷（P）富集之间的潜在联系。随着奶牛数量的增加和出售的P肥料的吨数的增加，土壤P的含量尤其增加。磷的中位数富集在来自工业和奶业土地用途的径流中的地表水中，以及奶业下的地下水中，特别是在那些具有砾石或砂岩性的含水层中，而与地下水的氧化还原状态无关。在将地表位置和地下水位置进行地理配对以最大程度地提高连通性的机会之后，由砾岩和砂岩岩性引起的含水层占主导地位的部分站点显示，磷的浓度增加了，仅需10年的数据。这些数据增加了以下可能性：地下水在地表水中的贡献很大：地表水与地下水之间的连通性良好，在易于淋溶的土壤上大量土地利用，而淋溶的P不会通过含水层衰减。虽然可以在短期内采取措施减轻集约化耕作系统中的磷损失，但土壤肥沃和地下水缓慢等因素可能意味着，尽管使用了磷肥，但仍存在长期投入（即遗产），这可能会持续地表水P富集。为了避免地表水水质差，管理和规划可能需要考虑土壤-地下水-地表水系统中磷的连通性和特征。

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