Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.landurbplan.2014.11.008 |
Evaluation of three vegetation treatments in bioretention gardens in a semi-arid climate | |
Houdeshel, C. Dasch1; Hultine, Kevin R.2; Johnson, Nancy Collins3; Porneroy, Christine A.4 | |
通讯作者 | Houdeshel, C. Dasch |
来源期刊 | LANDSCAPE AND URBAN PLANNING
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ISSN | 0169-2046 |
EISSN | 1872-6062 |
出版年 | 2015 |
卷号 | 135页码:62-72 |
英文摘要 | Bioretention is a well-established tool to reduce nutrient transport from impervious urban landscapes to sensitive riparian habitat in mesic climates. However, the effectiveness of bioretention is less tested in arid and semi-arid climates. Nutrient retention performance was evaluated in three 10 m(2) bioretention cells with different vegetation communities: (I) an irrigated wetland vegetation community, (2) an un-irrigated upland vegetation community, and (3) a no-vegetation control. Synthetic stormwater was added to each cell to simulate the average annual runoff of precipitation from a 220 m(2) impervious surface in Salt Lake City, UT. A significant amount of phosphate (approximate to 50%) was retained by all treatments during the 12-month study. However, total nitrogen (TN) retention was only achieved in the Wetland and Upland treatments (59% and 22%, respectively), and nitrate retention was only achieved in the Wetland treatment (38%). In contrast, the Upland and Control treatments exported 2 and 9 times more nitrate than was added in the simulated rainfall events. Improved nitrogen retention by the Wetland treatment came at the cost of over 12,000I (3200 gal) of irrigation to sustain the vegetation through the hot, dry summer. We hypothesize that plant uptake and soil microbial communities are driving nutrient retention in bioretention systems, and that increasing net primary production will increase nutrient retention. In water-limited climates, this can be sustainably achieved by either: increasing native upland vegetation densities above naturally expected densities, or, by using gray water instead of municipal water sources to irrigate wetland communities through dry summer periods. (C) 2014 Elsevier B.V. All rights reserved. |
英文关键词 | Bioretention Green infrastructure Low impact development Arid climates Stormwater Nutrient treatment |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000348554700006 |
WOS关键词 | URBAN STORMWATER RUNOFF ; COLORADO RIVER ; BIOFILTRATION SYSTEMS ; RIPARIAN VEGETATION ; POLLUTANT REMOVAL ; NITROGEN REMOVAL ; PERFORMANCE ; NUTRIENT ; SCALE ; OPTIMIZATION |
WOS类目 | Ecology ; Environmental Studies ; Geography ; Geography, Physical ; Regional & Urban Planning ; Urban Studies |
WOS研究方向 | Environmental Sciences & Ecology ; Geography ; Physical Geography ; Public Administration ; Urban Studies |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/189112 |
作者单位 | 1.Utah State Univ, Ctr Ecol, Logan, UT 84322 USA; 2.Desert Bot Garden, Dept Res Conservat & Collect, Phoenix, AZ 85008 USA; 3.No Arizona Univ, Sch Earth Sci & Environm Sustainabil, Flagstaff, AZ 86011 USA; 4.Univ Utah, Dept Civil & Environm Engn, Salt Lake City, UT USA |
推荐引用方式 GB/T 7714 | Houdeshel, C. Dasch,Hultine, Kevin R.,Johnson, Nancy Collins,et al. Evaluation of three vegetation treatments in bioretention gardens in a semi-arid climate[J],2015,135:62-72. |
APA | Houdeshel, C. Dasch,Hultine, Kevin R.,Johnson, Nancy Collins,&Porneroy, Christine A..(2015).Evaluation of three vegetation treatments in bioretention gardens in a semi-arid climate.LANDSCAPE AND URBAN PLANNING,135,62-72. |
MLA | Houdeshel, C. Dasch,et al."Evaluation of three vegetation treatments in bioretention gardens in a semi-arid climate".LANDSCAPE AND URBAN PLANNING 135(2015):62-72. |
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