<P> Methods for measuring evapotranspiration can be adapted to an urban setting to estimate the water requirements of urban landscape vegetation . </P> <P> The water requirement of urban landscapes, particularly urban parklands, is of growing concern . The estimation of evapotranspiration (ET) and subsequently plant water requirements in urban vegetation needs to consider the heterogeneity of plants, soils, water, and climate characteristics . In a research in South Australia, two practical ET estimation approaches are compared to a detailed Soil Water Balance (SWB) analysis over a one - year period . One approach is the Water Use Classification of Landscape Plants (WUCOLS) method, which is based on expert opinion on the water needs of different classes of landscape plants . The other is a remote sensing approach based on the Enhanced Vegetation Index (EVI) from Moderate Resolution Imaging Spectroradiometer (MODIS) sensors on the Terra satellite . Both methods require knowledge of reference ET calculated from meteorological data . More information is available in: </P> <P> Comparing Three Approaches of Evapotranspiration Estimation in Mixed Urban Vegetation: Field - Based, Remote Sensing - Based and Observational - Based Methods * (1) </P> <P> Water requirements of urban landscape plants: a comparison of three factor - based approaches * (2) </P>

Where would higher levels of potential evapotranspiration occur on an average