Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2016.06.016 |
Evapotranspiration of urban lawns in a semi-arid environment: An in situ evaluation of microclimatic conditions and watering recommendations | |
Litvak, Elizaveta1; Pataki, Diane E.1,2 | |
通讯作者 | Litvak, Elizaveta |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS
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ISSN | 0140-1963 |
EISSN | 1095-922X |
出版年 | 2016 |
卷号 | 134页码:87-96 |
英文摘要 | As many regions worldwide are increasingly affected by water scarcity caused by unprecedented climate change and population growth, current practices of landscape irrigation need to be evaluated to develop scientifically based water-saving recommendations. We compared widely used evapotranspiration (ET) based guidelines of turfgrass watering requirements with ET from 8 irrigated turfgrass lawns (4 unshaded and 4 shaded by various degree) measured in situ by portable chambers in the Los Angeles Metropolitan area. ET from unshaded lawns was 40% higher than recommended irrigation inputs and ET from shaded lawns was mostly within recommended ranges. We evaluated the microclimate coefficient (km), a factor used to adjust ET from reference surfaces to local microclimatic conditions. While in situ k(mc) was mostly within the ranges recommended for California, (1) km ranges for particular landscape types deviated from observations, (2) minimum and maximum km, were beyond recommended ranges, and (3) km, had clear seasonal changes overlooked by current methodology. We propose a method to quantitatively estimate the effect of shade on k(mc) and improved categories and coefficients for applying the landscape coefficient method under realistic urban conditions. (C) 2016 Elsevier Ltd. All rights reserved. |
英文关键词 | Irrigation requirements Turfgrass water use Landscape coefficient method Los Angeles California WUCOLS |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000383935700012 |
WOS关键词 | VAPOR-PRESSURE DEFICIT ; WESTERN UNITED-STATES ; ECOSYSTEM SERVICES ; CLIMATE-CHANGE ; SOIL-MOISTURE ; LOS-ANGELES ; STOMATAL CONTROL ; ENERGY-BALANCE ; TRANSPIRATION ; LANDSCAPES |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/194161 |
作者单位 | 1.Univ Utah, Dept Biol, 257 S 1400 E, Salt Lake City, UT 84112 USA; 2.Univ Utah, Dept City & Metropolitan Planning, Salt Lake City, UT 84112 USA |
推荐引用方式 GB/T 7714 | Litvak, Elizaveta,Pataki, Diane E.. Evapotranspiration of urban lawns in a semi-arid environment: An in situ evaluation of microclimatic conditions and watering recommendations[J],2016,134:87-96. |
APA | Litvak, Elizaveta,&Pataki, Diane E..(2016).Evapotranspiration of urban lawns in a semi-arid environment: An in situ evaluation of microclimatic conditions and watering recommendations.JOURNAL OF ARID ENVIRONMENTS,134,87-96. |
MLA | Litvak, Elizaveta,et al."Evapotranspiration of urban lawns in a semi-arid environment: An in situ evaluation of microclimatic conditions and watering recommendations".JOURNAL OF ARID ENVIRONMENTS 134(2016):87-96. |
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