Estimation of Water Consumption in Agricultural Sector of Soudlaneh Vill Using Estimation Algorithm of Evapotranspiration

The main consumer of water resource in the country is agriculture sector – AS a result, the largest amount of water losses is related to this sector one of the most important processes of agricultural water losses related to real evapotranspiration because during the evapotranspiration process (ET) , a large volume of water of surface soil transferred transpiration ally and also sub soil water is transferred through the vegetation and real transpiration to the atmosphere. In this research using the algorithm SEBAL and MODIS indicator the real evapotranspiration rate was evaluated in Sodlaneh village of Quchan in 2011.Monthly results indicate the highest evapotranspiration was related to the months of April, June, May that with average of 17, 21, 26 mm was topped up respectively. High levels of evapotranspiration in spring due to land use map of the area which dominates annual evaporation and transpiration of the Sodlaneh village is calculation this year as 260mm that its Maximum equal with 644 mm is related to eastern part of the village (such as villages Dadanloo, Dizadiz) and and at least equivalent to 102mm is related to the central and western parts of the village (such as village of davoodli and dollo). The results of this study with the land data of Sodlaneh village shows that there is a significant correlation.