ENVS 2060 Lecture Notes - Lecture 15: Permanent Wilting Point, Evapotranspiration, Hydraulic Conductivity
31 Mar 2016
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Hydraulic conductivity (the lux rate of water moving through the soil) decreases rapidly with decreasing water content. Evapotranspiriation [ea] water lost by evaporation and plant transpiration, actual measure of it. Potential evapotranspiration [pet] water that could be lost by evaporation and used by the plants if water was never limited. Rain is about the same at every month of the year. The amount of evapotranspiration changes: winter months = low, may goes above the precipitation amount, despite through dry season, they recharge in the fall. At wilting point when entering, using soil because of least precipitation. Determine available water for each horizon until the depth of roots. 0. 114 0. 365 (itting factors, relating incoming solar radiation and # of daylight hours) Step 1: temperature: find month, find temperature extremes (high and low, reference. Step 2: bright sunshine hours (n: select closest weather station to your site, divide that # by # of days in the month = sunshine/day, reference.
