• 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 >NUTRIENT CONTRIBUTION OF NONPOINT SOURCE RUNOFF IN THE LAS VEGAS VALLEY
【24h】

NUTRIENT CONTRIBUTION OF NONPOINT SOURCE RUNOFF IN THE LAS VEGAS VALLEY

机译：拉斯维加斯谷非点源径流的养分贡献

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 Geographic Information System (GIS) based non-point source runoff model is developed for the Las Vegas Valley, Nevada, to estimate the nutrient loads during the years 2000 and 2001. The estimated nonpoint source loads are compared with current wastewater treatment facilities loads to determine the non-point source contribution of total phosphorus (TP), total nitrogen (TN), and total suspended solids (TSS) on a monthly and annual time scale. An innovative calibration procedure is used to estimate the pollutant concentrations for different land uses based on available water quality data at the outlet. Results indicate that the pollutant concentrations are higher for the Las Vegas Valley than previous published values for semi-arid and arid regions. The total TP and TN loads from nonpoint sources are approximately 15 percent and 4 percent, respectively, of the total load to the receiving water body, Lake Mead. The TP loads during wet periods approach the permitted loads from the wastewater treatment plants that discharge into Las Vegas Wash. In addition, the GIS model is used to track pollutant loads in the stream channels for one of the subwa-tersheds. This is useful for planning the location of Best Management Practices to control nonpoint pollutant loads.
机译：为内华达州的拉斯维加斯山谷开发了基于地理信息系统（GIS）的非点源径流模型，以估算2000年和2001年的营养负荷。将估算的非点源负荷与当前废水处理设施的负荷进行比较，得出在每月和每年的时间范围内，确定总磷（TP），总氮（TN）和总悬浮固体（TSS）的非点源贡献。创新的校准程序用于根据出口处可用的水质数据估算不同土地用途的污染物浓度。结果表明，拉斯维加斯山谷的污染物浓度高于先前公布的半干旱和干旱地区的污染物浓度。来自非点源的总TP和TN负荷分别约为接收水体米德湖总负荷的15％和4％。湿润时期的总磷负荷接近排放到拉斯维加斯洗车场的废水处理厂允许的负荷，此外，GIS模型还用于跟踪其中一个子流域的河道中的污染物负荷。这对于计划最佳管理实践的位置以控制非点源污染物负荷很有用。

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