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作者

Paria Shojaei;Mahdi Gheysari;Baden Myers;Hadi Esmaeili

来源

URBAN FORESTRY & URBAN GREENING,Vol.54,Issue1,Article 126767

语言

英文

关键字

Evapotranspiration;Microclimate coefficient;Urban greening;Urban microclimate;Urban land cover/use

作者单位

Department of Water Engineering, College of Agriculture, Isfahan University of Technology, Isfahan, Iran;UniSA STEM, University of South Australia, SA, Australia;Department of Water Engineering, College of Agriculture, Isfahan University of Technology, Isfahan, Iran;UniSA STEM, University of South Australia, SA, Australia

摘要

The competing demands of landscape irrigation and other urban water requirements are motivating improvements in water efficiency in arid urban areas. Complex urban environments create unique microclimates that can result in different irrigation requirements across the landscape. The microclimate coefficient (Kmc) is applied to adjust evapotranspiration from reference surfaces to local microclimatic conditions. The objectives of this study were to quantify and model urban microclimate conditions across the landscape. Air temperature and relative humidity were recorded at five landscapes with different surrounding land cover/use in the city of Isfahan, Iran, over a period of three years. The results showed that the Kmc values varied both locally and over time. The monthly Kmc at the five sites varied from 0.87 to 1.34. Results indicated that assuming a constant Kmc throughout the year may lead to errors in estimating the water requirement of a landscape. The best regression models developed for predicting the Kmc as a linear function of surface cover types explained 83 % of the variance in the Kmc.