干旱区生态环境知识资源中心(Arid): Urbanization in Arid Central Arizona Watersheds Results in Decreased Stream Flashiness

Arid

DOI	10.1029/2019WR025835
	Urbanization in Arid Central Arizona Watersheds Results in Decreased Stream Flashiness
	McPhillips, L. E.1,2; Earl, S. R.3; Hale, R. L.4; Grimm, N. B.3,5
通讯作者	McPhillips, L. E.
来源期刊	WATER RESOURCES RESEARCH
ISSN	0043-1397
EISSN	1944-7973
出版年	2019
卷号	55 期号:11 页码:9436-9453
英文摘要	There is broad consensus that urbanization results in dramatic changes in stream hydrology, such as higher peak flows and greater flashiness. However, this has not been definitively tested for aridlands, which are characterized by these very same hydrograph properties. We analyzed streamflow records from 19 watersheds of central Arizona, USA, to determine how hydrograph characteristics varied with urban development. Using linear mixed effects models, which factored in imperviousness along with other watershed characteristics, we evaluated influences on streamflow regime metrics calculated from daily and subdaily flow data. We found that flashiness, coefficient of variation, zero-flow days, and hydrograph rise and fall rates decreased with extent of imperviousness-the opposite pattern to that observed in previous studies primarily in humid regions. Engineered retention basins are one explanation for this observation though novel urban sources of dry weather flows are likely also playing a role. We also found strong relationships between these hydrologic metrics and mean area-weighted discharge, watershed area, and annual precipitation. Like in humid systems, we did observe more high flow events in the urban desert streams compared to nonurban desert streams. However, this was only at the lower flood threshold; there was no increase in larger floods with urban development. Overall, the urban stream syndrome manifests differently in this arid system: Urbanization increases water retention and leads to less variable flows in stream ecosystems.
英文关键词	anthropogenic effects human impacts catchment streamflow watershed
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000497118500001
WOS关键词	LAND-COVER ; SOLUTION CHEMISTRY ; URBAN CATCHMENTS ; UNITED-STATES ; RUNOFF ; FLOW ; STORMWATER ; INFRASTRUCTURE ; MANAGEMENT ; HYDROLOGY
WOS类目	Environmental Sciences ; Limnology ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
EI主题词	2019-11-19
来源机构	Arizona State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310930
作者单位	1.Penn State Univ, Dept Civil & Environm Engn, University Pk, PA 16802 USA; 2.Penn State Univ, Dept Agr & Biol Engn, University Pk, PA 16802 USA; 3.Arizona State Univ, Julie Ann Wrigley Global Inst Sustainabil, Tempe, AZ USA; 4.Idaho State Univ, Dept Biol Sci, Pocatello, ID 83209 USA; 5.Arizona State Univ, Sch Life Sci, Tempe, AZ USA
推荐引用方式 GB/T 7714	McPhillips, L. E.,Earl, S. R.,Hale, R. L.,et al. Urbanization in Arid Central Arizona Watersheds Results in Decreased Stream Flashiness[J]. Arizona State University,2019,55(11):9436-9453.
APA	McPhillips, L. E.,Earl, S. R.,Hale, R. L.,&Grimm, N. B..(2019).Urbanization in Arid Central Arizona Watersheds Results in Decreased Stream Flashiness.WATER RESOURCES RESEARCH,55(11),9436-9453.
MLA	McPhillips, L. E.,et al."Urbanization in Arid Central Arizona Watersheds Results in Decreased Stream Flashiness".WATER RESOURCES RESEARCH 55.11(2019):9436-9453.