干旱区生态环境知识资源中心(Arid): Substrate moisture variations of extensive green roofs with different structural configurations in a semi-arid region: Observational data and dynamic simulation

Arid

DOI	10.1016/j.jhydrol.2023.130133
	Substrate moisture variations of extensive green roofs with different structural configurations in a semi-arid region: Observational data and dynamic simulation
	Liu, Wen; Zhang, Xin; Feng, Qi; Engel, Bernard A.; Li, Zongxing
通讯作者	Feng, Q ; Li, ZX
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2023
卷号	626
英文摘要	Substrate moisture condition is crucial for hydrological performance, water management and plant survival of green roofs. To date, the behaviour of long-term substrate moisture of green roofs in various climate regions has not been well understood. In this study, 24 months continuous field monitoring of substrate moisture content within nine extensive green roof modules with varies structural configurations was conducted to investigate the impacts of structural configurations and meteorological factors on substrate moisture content, and identify the key parameters for simulating the long-term substrate moisture dynamics. Results showed that green roofs planted with Sedum Spectabile have the highest mean volumetric water content (VWC) (0.12-0.15 m(3)/m(3)) compared to other plant species considered. Green roofs with 5-cm substrate depth had lower mean VWC (0.07-0.08 m(3)/m(3)) than other substrate depths. The average substrate moisture loss rate of green roofs in summer and autumn seasons was 1.35 and 1.22 mm/day, respectively, which was higher than the spring (0.73 mm/day) and winter (0.64 mm/day) seasons for 2021. There were significant differences in mean VWC of green roofs among substrate material types. The mean VWC of green roofs was gradually enhanced from 0.12 to 0.14 m(3)/m(3) as the substrate depth increased from 5 cm to 15 cm. The differences of mean VWC among vegetation types were all extremely significant (p < 0.001). The relative humidity was the most significant influencing factor on the average VWC level (correlation coefficient r = 0.42), with antecedent dry weather period (ADWP) had less significant effects on substrate VWC (r = 0.33), and followed by precipitation depth (r = 0.27). However, there was no significant relationship between air temperature and average VWC level of green roofs as well as total solar radiation. Nash-Sutcliffe efficient (NSE) values of the model simulations ranged from 0.70 to 0.81, and the mean absolute relative error (MAE) values ranged from 1.25 to 2.36, which indicated the model can adequately simulate the long-term substrate moisture content dynamics of green roofs. The crop coefficient and maximum water holding capacity of the substrate were the key parameters affecting long-term moisture content simulation of green roofs. These results could provide scientific suggestions for selecting suitable structural configuration to enhance water holding capacity of extensive green roofs in arid climates.
英文关键词	Long-term simulation Meteorological factors Semi-arid region Structural configuration Substrate moisture Volumetric water content (VWC)
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001085127500001
WOS关键词	WATER-RETENTION ; LONG-TERM ; STORMWATER RUNOFF ; DRAINAGE SYSTEMS ; PERFORMANCE ; MANAGEMENT ; EVAPOTRANSPIRATION ; VEGETATION ; DEPTH ; IMPACTS
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397427
推荐引用方式 GB/T 7714	Liu, Wen,Zhang, Xin,Feng, Qi,et al. Substrate moisture variations of extensive green roofs with different structural configurations in a semi-arid region: Observational data and dynamic simulation[J],2023,626.
APA	Liu, Wen,Zhang, Xin,Feng, Qi,Engel, Bernard A.,&Li, Zongxing.(2023).Substrate moisture variations of extensive green roofs with different structural configurations in a semi-arid region: Observational data and dynamic simulation.JOURNAL OF HYDROLOGY,626.
MLA	Liu, Wen,et al."Substrate moisture variations of extensive green roofs with different structural configurations in a semi-arid region: Observational data and dynamic simulation".JOURNAL OF HYDROLOGY 626(2023).