气候变化领域集成服务门户(CCPortal): Assessing the runoff retention of extensive green roofs using runoff coefficients and curve numbers and the impacts of substrate moisture

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DOI	10.2166/nh.2020.167
	Assessing the runoff retention of extensive green roofs using runoff coefficients and curve numbers and the impacts of substrate moisture
	Liu, Wen; Feng, Qi; Chen, Weiping; Wei, Wei
发表日期	2020
ISSN	1998-9563
EISSN	2224-7955
起始页码	635
结束页码	647
卷号	51 期号:4
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.
英文关键词	curve number; green roof; runoff coefficient; stormwater management; substrate moisture
WOS研究方向	Water Resources
WOS类目	Water Resources
WOS关键词	LAND-USE ; PERFORMANCE ; SCALE ; AREA ; MANAGEMENT ; VEGETATION ; REDUCTION ; EXTREMES ; BEHAVIOR ; MODELS
WOS记录号	WOS:000565303800004
来源期刊	HYDROLOGY RESEARCH
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/239341
作者单位	[Liu, Wen; Feng, Qi] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Peoples R China; [Chen, Weiping; Wei, Wei] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
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]. 中国科学院西北生态环境资源研究院,2020,51(4).
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).
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).