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.
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。
