Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jhydrol.2012.11.054 |
Land cover controls on summer discharge and runoff solution chemistry of semi-arid urban catchments | |
Gallo, Erika L.1; Brooks, Paul D.1; Lohse, Kathleen A.2; McLain, Jean E. T.3,4 | |
通讯作者 | Gallo, Erika L. |
来源期刊 | JOURNAL OF HYDROLOGY
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ISSN | 0022-1694 |
EISSN | 1879-2707 |
出版年 | 2013 |
卷号 | 485页码:37-53 |
英文摘要 | Recharge of urban runoff to groundwater as a stormwater management practice has gained importance in semi-arid regions where water resources are scarce and urban centers are growing. Despite this trend, the importance of land cover in controlling semi-arid catchment runoff quantity and quality remains unclear. Here we address the question; How do land cover characteristics control the amount and quality of storm runoff in semi-arid urban catchments? We monitored summertime runoff quantity and quality from five catchments dominated by distinct urban land uses: low, medium, and high density residential, mixed use, and commercial. Increasing urban land cover increased runoff duration and the likelihood that a rainfall event would result in runoff, but did not increase the time to peak discharge of episodic runoff. The effect of urban land cover on hydrologic responses was tightly coupled to the magnitude of rainfall. At distinct rainfall thresholds, roads, percent impervious cover and the stormwater drainage network controlled runoff frequency, runoff depth and runoff ratios. Contrary to initial expectations, runoff quality did not vary in repose to impervious cover or land use. We identified four major mechanisms controlling runoff quality: (1) variable solute sourcing due to land use heterogeneity and above ground catchment connectivity; (2) the spatial extent of pervious and biogeochemically active areas; (3) the efficiency of overland flow and runoff mobilization; and (4) solute flushing and dilution. Our study highlights the importance of the stormwater drainage systems characteristics in controlling urban runoff quantity and quality; and suggests that enhanced wetting and in-stream processes may control solute sourcing and retention. Finally, we suggest that the characteristics of the stormwater drainage system should be integrated into stormwater management approaches. (C) 2012 Elsevier B.V. All rights reserved. |
英文关键词 | Urban Runoff Water quality Land use Semi-arid |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000317545200004 |
WOS关键词 | WET-WEATHER FLOWS ; SONORAN DESERT ; ATMOSPHERIC DEPOSITION ; WATER-QUALITY ; STORMWATER RUNOFF ; STREAM ECOLOGY ; TRACE-METALS ; HOT MOMENTS ; RAINFALL ; SURFACE |
WOS类目 | Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources |
WOS研究方向 | Engineering ; Geology ; Water Resources |
来源机构 | University of Arizona |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/178495 |
作者单位 | 1.Univ Arizona, Dept Hydrol & Water Resources, Tucson, AZ 85721 USA; 2.Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85721 USA; 3.USDA ARS, US Arid Land Agr Res Ctr, Maricopa, AZ 85138 USA; 4.Univ Arizona, Water Resources Res Ctr, Tucson, AZ 85719 USA |
推荐引用方式 GB/T 7714 | Gallo, Erika L.,Brooks, Paul D.,Lohse, Kathleen A.,et al. Land cover controls on summer discharge and runoff solution chemistry of semi-arid urban catchments[J]. University of Arizona,2013,485:37-53. |
APA | Gallo, Erika L.,Brooks, Paul D.,Lohse, Kathleen A.,&McLain, Jean E. T..(2013).Land cover controls on summer discharge and runoff solution chemistry of semi-arid urban catchments.JOURNAL OF HYDROLOGY,485,37-53. |
MLA | Gallo, Erika L.,et al."Land cover controls on summer discharge and runoff solution chemistry of semi-arid urban catchments".JOURNAL OF HYDROLOGY 485(2013):37-53. |
条目包含的文件 | ||||||
文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
Land cover controls (1462KB) | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 |
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