气候变化领域集成服务门户(CCPortal): Quantifying the effects of urbanization on floods in a changing environment to promote water security - A case study of two adjacent basins in Texas

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DOI	10.1016/j.jhydrol.2020.125154
	Quantifying the effects of urbanization on floods in a changing environment to promote water security - A case study of two adjacent basins in Texas
	Shao, Manqing; Zhao, Gang; Kao, Shih-Chieh; Cuo, Lan; Rankin, Cheryl; Gao, Huilin
通讯作者	Gao, HL (通讯作者)
发表日期	2020
ISSN	0022-1694
EISSN	1879-2707
卷号	589
英文摘要	The increased occurrence of flood events resulting from urbanization and global climate change is a great threat to water security. To systematically evaluate the impacts of urbanization on floods, we applied a paired catchments approach to two adjacent river basins in south-central Texas - the San Antonio River Basin (SARB), with fast urbanization; and the Guadalupe River Basin (GRB), with lithe land cover change. A physics-based distributed hydrological model - the Distributed Hydrology Soil Vegetation Model, embedded with a multi-purpose reservoir module (DHSVM-Res) - was used to simulate streamflow and reservoir storage. The simulations were conducted under different land cover scenarios, including a newly developed continuous land cover series (CLCS). Holistic analyses were then conducted for the paired basins using three methods: analyzing the selected flood events, detecting change points (CP) of monthly floods, and testing the elasticity of long-term flood regimes. The results suggest that (1) urbanization may reduce lag time and elevate flood peaks significantly by 3-30% in our study area; (2) when there is little land cover change, changing climate is the major driver of variations in the monthly maximum streamflow (MMS); (3) fast urbanization can amplify streamflow variability, increase MMS significantly, and thus alter the timing of CP; and (4) the mean MMS of observed streamflow in the SARB has increased by as much as 75.7% from the pre-CP to post-CP periods. This comprehensive study fills in a gap in our current understanding of the isolated impacts of urbanization on flooding and is expected to support future explorations of anthropogenic influences on floods.
关键词	CONTERMINOUS UNITED-STATES LAND-COVER DATABASE CLIMATE-CHANGE RIVER-BASIN INTENSE PRECIPITATION PAIRED CATCHMENT BOREAL FOREST YELLOW-RIVER STREAMFLOW HYDROLOGY
英文关键词	Urbanization; Paired catchments; Hydrological modeling; Changing climate; Land cover change; Water security
语种	英语
WOS研究方向	Engineering ; Geology ; Water Resources
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000568830400023
来源期刊	JOURNAL OF HYDROLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259978
推荐引用方式 GB/T 7714	Shao, Manqing,Zhao, Gang,Kao, Shih-Chieh,et al. Quantifying the effects of urbanization on floods in a changing environment to promote water security - A case study of two adjacent basins in Texas[J]. 中国科学院青藏高原研究所,2020,589.
APA	Shao, Manqing,Zhao, Gang,Kao, Shih-Chieh,Cuo, Lan,Rankin, Cheryl,&Gao, Huilin.(2020).Quantifying the effects of urbanization on floods in a changing environment to promote water security - A case study of two adjacent basins in Texas.JOURNAL OF HYDROLOGY,589.
MLA	Shao, Manqing,et al."Quantifying the effects of urbanization on floods in a changing environment to promote water security - A case study of two adjacent basins in Texas".JOURNAL OF HYDROLOGY 589(2020).