I considered the effects of different urban land use/cover on water requirement of urban landscape were considered. The air temperature and relative humidity differences at the canopy level in 5 intra urban sites and one site in a suburban area considered and analyzed during 42 months. The results showed that land use cover affects not only the air temperature but also the time that daily minimum and maximum temperature occurs.
Microclimate zoning of Isfahan City was conducted in GIS using digital land use maps including green space, garden, agricultural land, building, street, passages, waterbody, population density and bare land; and based on monthly average temperature in urban sites for the warm and cool seasons separately. Microclimate zoning is a beneficial tool to consider the effects of the changes of land use cover on air temperature in various places of city. The maximum difference in reference evapotranspiration of different sites was 18%. The microclimate coefficient (Kmc) applied to adjust evapotranspiration from reference surfaces to local microclimatic conditions quantified and modeled. The best regression models developed for predicting the monthly Kmc as a linear function of surface cover types explained 83 % of the variance in the Kmc. The proposed models can help policy-makers and urban planners modify their irrigation plans in different parts of the city to have sustainable water management.