Arid
DOI10.1016/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
ISSN0140-1963
EISSN1095-922X
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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