Low-impact development （LID） technologies have a great potential to reduce water usage and stormwa- ter runoff and are therefore seen as sustainable improvements that can be made to traditional water infrastructure,...Low-impact development （LID） technologies have a great potential to reduce water usage and stormwa- ter runoff and are therefore seen as sustainable improvements that can be made to traditional water infrastructure, These technologies include bioretention areas, rainwater capturing, and xeriscaping, all of which can be used in residential zones, Within the City of Atlanta, residential water usage accounts for 53% of the total water consumption; therefore, residential zones offer significant impact potential for the implementation of LID, This study analyzes the use of LID strategies within the different residen- tial zones of the City of Atlanta from an ecological perspective by drawing analogies to natural ecosys- tems, The analysis shows that these technologies, especially with the addition of a graywater system, work to improve the conventional residential water network based upon these ecological metrics, The higher metric values suggest greater parity with healthy, natural ecosystems.展开更多
The strengths weaknesses opportunities and threats SWOT analysis method is applied to assess the feasibility of traditional stormwater management and low impact development LID in China.The results show that tradition...The strengths weaknesses opportunities and threats SWOT analysis method is applied to assess the feasibility of traditional stormwater management and low impact development LID in China.The results show that traditional stormwater management has many disadvantages e.g.only stormwater collection and discharge or flooding peak-flow regulation is taken into consideration but lack of many important functions such as on-site infiltration non-point pollution control ecological treatment etc.Meanwhile as a new stormwater management concept the LID system has many advantages e.g.LID can not only control rainwater quantity but also effectively prevent non-point pollution. Moreover LID is easy for implementation and cost effective and operation and management can also be done easily.LID has attracted more and more attention from governmental authorities at different levels and the majority of practitioners. Therefore LID has bright prospects for wide applications in China.展开更多
校园海绵化改造是海绵城市建设的重要组成部分,能够缓解城市内涝,高效利用校园内部水资源,实现可持续发展。以临沂市某学校为例,运用暴雨洪水管理模型(Storm Water Management Model,SWMM)研究校园海绵化改造方案,评估低影响开发(Low-Im...校园海绵化改造是海绵城市建设的重要组成部分,能够缓解城市内涝,高效利用校园内部水资源,实现可持续发展。以临沂市某学校为例,运用暴雨洪水管理模型(Storm Water Management Model,SWMM)研究校园海绵化改造方案,评估低影响开发(Low-Impact Development,LID)技术方案的应用效果。其间通过分析校园环境的水文特征,提出4种LID设施布设方案,并利用SWMM模拟其在不同暴雨重现期下的水文响应。研究结果显示,单LID设施方案中,绿色屋顶对地表径流的削减率最大,下凹式绿地对径流峰值的削减能力最大;LID设施组合方案是减少径流和峰值流量的最有效方案。研究成果为海绵校园建设和LID技术在实际应用中的优化提供理论支持和实践参考。展开更多
基金This work was supported by a grant for ＂Resilient Interdependent Infrastructure Processes and Systems （RIPS） Type 2： Participatory Modeling of Complex Urban Infrastructure Systems （Model Urban SysTems）＂ （#0836046） from the National Science Foundation, Division of Emerging Frontiers in Research and Innovations （EFRI）. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. The authors acknowledge the work of Jeong et al. for the use of data and support in this analysis.
文摘Low-impact development （LID） technologies have a great potential to reduce water usage and stormwa- ter runoff and are therefore seen as sustainable improvements that can be made to traditional water infrastructure, These technologies include bioretention areas, rainwater capturing, and xeriscaping, all of which can be used in residential zones, Within the City of Atlanta, residential water usage accounts for 53% of the total water consumption; therefore, residential zones offer significant impact potential for the implementation of LID, This study analyzes the use of LID strategies within the different residen- tial zones of the City of Atlanta from an ecological perspective by drawing analogies to natural ecosys- tems, The analysis shows that these technologies, especially with the addition of a graywater system, work to improve the conventional residential water network based upon these ecological metrics, The higher metric values suggest greater parity with healthy, natural ecosystems.
基金The National Science and Technology Major Project of China(No.2010ZX07320-003)
文摘The strengths weaknesses opportunities and threats SWOT analysis method is applied to assess the feasibility of traditional stormwater management and low impact development LID in China.The results show that traditional stormwater management has many disadvantages e.g.only stormwater collection and discharge or flooding peak-flow regulation is taken into consideration but lack of many important functions such as on-site infiltration non-point pollution control ecological treatment etc.Meanwhile as a new stormwater management concept the LID system has many advantages e.g.LID can not only control rainwater quantity but also effectively prevent non-point pollution. Moreover LID is easy for implementation and cost effective and operation and management can also be done easily.LID has attracted more and more attention from governmental authorities at different levels and the majority of practitioners. Therefore LID has bright prospects for wide applications in China.
文摘校园海绵化改造是海绵城市建设的重要组成部分,能够缓解城市内涝,高效利用校园内部水资源,实现可持续发展。以临沂市某学校为例,运用暴雨洪水管理模型(Storm Water Management Model,SWMM)研究校园海绵化改造方案,评估低影响开发(Low-Impact Development,LID)技术方案的应用效果。其间通过分析校园环境的水文特征,提出4种LID设施布设方案,并利用SWMM模拟其在不同暴雨重现期下的水文响应。研究结果显示,单LID设施方案中,绿色屋顶对地表径流的削减率最大,下凹式绿地对径流峰值的削减能力最大;LID设施组合方案是减少径流和峰值流量的最有效方案。研究成果为海绵校园建设和LID技术在实际应用中的优化提供理论支持和实践参考。
