Assessing the runoff retention of extensive green roofs using runoff coefficients and curve numbers and the impacts of substrate moisture
文献类型：期刊论文
| 作者 | Liu, Wen; Feng, Qi; Chen, Weiping ; Wei, Wei
|
| 刊名 | HYDROLOGY RESEARCH
 |
| 出版日期 | 2020-08 |
| 卷号 | 51期号:4页码:635-647 |
| 关键词 | curve number green roof runoff coefficient stormwater management substrate moisture |
| ISSN号 | 1998-9563 |
| 英文摘要 | In this study, rainfall-runoff data of four green roofs with varying structural configurations under dry and wet substrates were analyzed to acquire the effective estimation for Runoff Coefficient (C-v) and Curve Number (CN) parameters. Results showed that for the dry and wet substrates, averaged runoff retention of vegetated green roofs varied from 34.7 to 48.5% and from 14.7 to 30.6%, that for bare green roofs was 64.9 and 35.1%, respectively. For dry and wet substrates, meanC(v)of vegetated green roofs was 0.58 and 0.75, respectively. For vegetated green roofs under the wet substrate, average CN values ranged from 96 to 98, meanwhile for dry substrate, average CN varied from 93 to 97. For bare green roof, average CN was 93 for dry substrate and 97 for wet substrate. Predicted runoff using the SCS-CN method exhibited a good linear fit with the observed runoff of green roofs. A significantly positive relationship was found between initial substrate moisture and runoff coefficient as well as CNs. The drier initial substrate moisture conditions corresponded to the lower runoff coefficient and curve numbers. These results would facilitate the proper use of estimatedC(v)and CN values of green roofs for urban stormwater management in a semi-arid region. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44223]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu, Wen,Feng, Qi,Chen, Weiping,et al. Assessing the runoff retention of extensive green roofs using runoff coefficients and curve numbers and the impacts of substrate moisture[J]. HYDROLOGY RESEARCH,2020,51(4):635-647. |
| APA | Liu, Wen,Feng, Qi,Chen, Weiping,&Wei, Wei.(2020).Assessing the runoff retention of extensive green roofs using runoff coefficients and curve numbers and the impacts of substrate moisture.HYDROLOGY RESEARCH,51(4),635-647. |
| MLA | Liu, Wen,et al."Assessing the runoff retention of extensive green roofs using runoff coefficients and curve numbers and the impacts of substrate moisture".HYDROLOGY RESEARCH 51.4(2020):635-647. |
入库方式： OAI收割
来源：生态环境研究中心
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