Irrigation rates and turfgrass evapotranspiration in cities with contrasting water availability
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Le résumé fourni par la source
Abstract As water scarcity is worsened by drought and climate change, there is more interest in efficient management of urban irrigation, requiring understanding of the drivers of evapotranspiration (ET) and the role of irrigation inputs. We developed and validated a method to accurately measure ET of turfgrass lawns in contrasting climates using portable static chambers. We made in situ measurements of ET and irrigation inputs in lawns across three metropolitan areas in the United States with varying climatic conditions, water availability, and water conservation policies: Salt Lake Valley, Utah; San Fernando Valley, California; and Tallahassee, Florida. In full sun, mean daily ET estimates (ET sun ) were 0.7 ± 0.4 mm day −1 in Tallahassee, 1.6 ± 0.8 mm day −1 in Los Angeles, and 3.3 ± 1.1 mm day −1 in Salt Lake Valley. In the shade, daily ET estimates (ET shade ) were two to three times lower. In all three regions, ET was primarily driven by solar radiation ( I 0 ) and atmospheric vapor pressure deficit ( D ). Across the cities, irrigation rates were a key driver of ET, along with I 0 and D . Daily irrigation ranged from 0 mm day −1 in Tallahassee (most were unirrigated) to 1.9 ± 1.2 mm day −1 in Los Angeles and 5.1 ± 2.9 mm day −1 in Salt Lake Valley. ET increased linearly with irrigation up to ~3 mm day −1 , after which ET remained relatively constant despite irrigation increases. Our results highlight the importance of accounting for nonlinear responses and shading effects on ET in developing accurate irrigation recommendations.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Irrigation rates and turfgrass evapotranspiration in cities with contrasting water availability
- Date Crossref
- 31/10/2024
- Éditeur
- Wiley
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Arizona State University pays non établi dans la noticeUniversité ou école supérieure
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St. Mary's College of Maryland pays non établi dans la noticeUniversité ou école supérieure
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University of California Department of Botany and Plant Sciences pays non établi dans la noticeUniversité ou école supérieure
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Utah State University Department of Environment and Society pays non établi dans la noticeUniversité ou école supérieure
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Environmental Studies Department St Mary's College of Maryland St Mary's City Maryland USA Environmental Studies Department pays non établi dans la noticeUniversité ou école supérieure
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School of Sustainability pays non établi dans la noticeUniversité ou école supérieure
Arizona State University, St. Mary's College of Maryland et Department of Botany and Plant Sciences — University of California, avec 3 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.