采用 SWMM 和 HYDRUS 模型评估绿色屋顶实践。
Assessment of a green roof practice using the coupled SWMM and HYDRUS models.
机构信息
School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, South Korea.
Environmental Microbial and Food Safety Laboratory, USDA-ARS, Beltsville, MD, USA.
出版信息
J Environ Manage. 2020 May 1;261:109920. doi: 10.1016/j.jenvman.2019.109920. Epub 2020 Jan 27.
Green roof can mitigate urban stormwater and improve environmental, economic, and social conditions. Various modeling approaches have been effectively employed to implement a green roof, but previous models employed simplifications to simulate water movement in green roof systems. To address this issue, we developed a new modeling tool (SWMM-H) by coupling the stormwater management and HYDRUS-1D models to improve simulations of hydrological processes. We selected green roof systems to evaluate the coupled model. Rainfall-runoff experiments were conducted for a pilot-scale green roof and urban subbasin. Soil moisture in the green roof and runoff volume in the subbasin were simulated more accurately by using SWMM-H instead of SWMM. The scenario analysis showed that SWMM-H selected sandy loam for controlling runoff whereas SWMM recommended sand. In conclusion, SWMM-H could be a useful tool for accurately understanding hydrological processes in green roofs.
绿色屋顶可以缓解城市暴雨，改善环境、经济和社会条件。各种建模方法已被有效地应用于实施绿色屋顶，但以前的模型采用了简化方法来模拟绿色屋顶系统中的水流运动。为了解决这个问题，我们通过耦合雨水管理模型（SWMM）和土壤水运动模型（HYDRUS-1D）来开发了一个新的建模工具（SWMM-H），以改进水文过程的模拟。我们选择了绿色屋顶系统来评估耦合模型。我们对一个试点规模的绿色屋顶和城市子流域进行了降雨径流实验。结果表明，与 SWMM 相比，SWMM-H 可以更准确地模拟绿色屋顶的土壤湿度和子流域的径流量。情景分析表明，SWMM-H 选择砂壤土来控制径流，而 SWMM 则推荐使用沙子。总之，SWMM-H 可以成为准确理解绿色屋顶水文过程的有用工具。
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