...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental earth sciences >Integrating hydrologic modeling and land use projections for evaluation of hydrologic response and regional water supply impacts in semi-arid environments
【24h】

Integrating hydrologic modeling and land use projections for evaluation of hydrologic response and regional water supply impacts in semi-arid environments

机译：整合水文模型和土地利用预测，以评估半干旱环境中的水文响应和区域供水影响

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

Semi-arid environments are generally more sensitive to urbanization than humid regions in terms of both hydrologic modifications and water resources sus-tainability. The current study integrates hydrologic modeling and land use projections to predict long-term impacts of urbanization on hydrologic behavior and water supply in semi-arid regions. The study focuses on the Upper Santa Clara River basin in northern Los Angeles County, CA, USA, which is undergoing rapid and extensive development. The semi-distributed Hydrologic Simulation Program Fortran (HSPF) model is parameterized with land use, soil, and channel characteristics of the study watershed. Model parameters related to hydrologic processes are calibrated at the daily time step using various spatial configurations of precipitation and parameters. Potential urbanization scenarios are generated on the basis of a regional development plan. The calibrated (and validated) model is run under the proposed development scenarios for a 10 year period. Results reveal that increasing development increases total annual runoff and wet season flows, while decreases are observed in existing baseflow and groundwater recharge during both dry and wet seasons. As development increases, medium-sized storms increase in both peak flow and overall volume, while low and high flow events (extremes) appear less affected. Urbanization is also shown to decrease natural recharge and, when considered at the regional scale, may result in a loss of critical water supply to Southern California. The current study provides a coupled framework for a decision support tool that can guide efforts involved in regional urban development planning and water supply management.
机译：就水文改造和水资源可持续性而言，半干旱环境通常比潮湿地区对城市化更为敏感。当前的研究将水文模型与土地利用预测相结合，以预测城市化对半干旱地区水文行为和供水的长期影响。该研究集中在美国加利福尼亚州洛杉矶县北部的圣塔克拉拉河上游流域，该流域正在迅速而广泛地发展。半分布式水文模拟程序Fortran（HSPF）模型通过研究流域的土地利用，土壤和河道特征进行参数化。与水文过程相关的模型参数在每天的时间步中使用各种降水和参数的空间配置进行校准。潜在的城市化方案是根据区域发展计划制定的。经过校准（并经过验证）的模型在建议的开发方案下运行了10年。结果表明，发展的增加增加了年径流量和雨季的总流量，而在旱季和雨季，现有的基础流量和地下水补给量都下降了。随着发展的增加，中型风暴的峰值流量和总流量均增加，而高低流量事件（极端事件）的影响似乎较小。城镇化进程也显示会减少自然补给，在区域范围内考虑，可能会导致南加州的关键水供应中断。当前的研究为决策支持工具提供了一个耦合的框架，可以指导参与区域城市发展规划和供水管理的工作。

著录项

  • 来源
    《Environmental earth sciences》 |2012年第6期|p.1671-1685|共15页
  • 作者

    Minxue He; Terri S. Hogue;

  • 作者单位

    Department of Civil and Environmental Engineering,University of California, Los Angeles, CA, USA,Office of Hydrologic Development,NOAA National Weather Service, Silver Spring, MD, USA,Riverside Technology, Inc., Fort Collins, CO, USA;

    Department of Civil and Environmental Engineering,University of California, Los Angeles, CA, USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    urbanization; watershed; hydrology; water supply; HSPF; california;

    机译：城市化;分水岭;水文;供水;HSPF;加州;

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