切萨皮克湾经城市雨水管理获得改善的经验教训.pptxVIP

Click to edit Master subtitle styleManaging Urban Stormwater to Reduce Eutrophication-Lessons from theChesapeake Bay切萨皮克湾经城市雨水管理获得改善的经验教训 VT Urban Stormwater Research城市雨水研究 Adaptive management applied to design, monitoring, and modeling of urban stormwater BMPs适应性管理应用到城市雨水最佳管理策略的设计、监测和模拟中 Integrating life-cycle cost analysis with predictive models, assessing Cost-Benefits将生活周期成本分析与预测模型融合，评估成本—效益 Improving predictive models and tools applied in urban watersheds w/ BMPs改善预测模型和工具，应用到城市流域/最佳管理措施中 Providing education and guidance on urban stormwater, and BMPs to various audiences提供城市雨水管理教育和引导，为群众介绍最佳管理措施/site/urban-stormwater/ Water quality issues from stormwater, and the Virginia-Chesapeake Bay program response雨水的水质问题，弗吉尼亚—切萨皮克湾规划应对Contemporary measures to address stormwater impacts解决雨水影响的现代措施Monitoring/Evaluating Stormwater Treatment practice监测/评估雨水治理实践Intelligent siting of BMPs, modeling performance最佳管理措施的明确定位，模拟性能Summary总结Topics of Discussion议题 415 eutrophic/ hypoxic coastal systems 415个富营养/缺氧化沿海系统 169 hypoxic areas169个缺氧区域233 areas of concern233个担忧区域13 recovering13个修复区Over last 50 years:在过去的50多年N flux doubledN流量翻两倍P flux tripledP流量翻三倍World Wide Eutrophication of Coastal Waters全球沿海水域的富营养化现象 What is Stormwater?什么是雨水？ What runs off the land and does not infiltrate陆地上流经的，不会渗透Amount depends on many factors:流量也依赖一些因素：Imperviousness不渗透性Rainfall intensity降雨密集度Soil conditions土壤条件Rate of rainfall降雨率Slope坡度 Stormwater Quantity-Peak Runoff雨水量——最大径流Stream Discharge河流流量Pre-development开发前Post-development w/o stormwater control开发后，没有雨水控制Post-development w/stormwater control开发后，有雨水控制Time时间Sources: Tess Wynn, “Low Impact Development”, 2009, Biological Systems Engineering, Virginia Tech Where does Stormwater Go?雨水会流到哪里？ Not to a Treatment Plant, directly into our streams, rivers, lakes, bays, and reservoirs 不是到处理厂，直接进入到河流、湖泊、港湾和容器中Infrastructure:基础设施Blue/Black/Gray/Green蓝色/黑色/灰色/绿色 Stormwater Quantity: Impacts on Virginia Hydrologic Cycle雨水量：对弗吉尼亚水循环的影响Source: State of the Nation’s R