Tham khảo tài liệu 'evapotranspiration remote sensing and modeling part 8', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | The Role of Evapotranspiration in the Framework of Water Resource Management and Planning Under Shortage Conditions 199 Observatory is now available at http and an early drought warning system further optimizing the use of the EU Solidarity Fund and European Mechanism for Civil Protection fostering water efficient technologies and practices fostering the emergence of a water-saving culture in Europe. In this framework evapotranspiration assessment is of outstanding importance both for planning and monitoring purposes. Its magnitude mainly referring to potential evapotranspiration is comparable to the main forcing of the water balance . precipitation and for this reason several climatic classifications are based on comparisons between these two quantities with the aim of determining specific climate conditions for different areas . Rivas-Martinez 1995 . Furthermore evapotranspiration is the only component of the water balance with a central role also in the energy and carbon balance since it directly accounts for hydrological agricultural and ecological effects of drought events. Specifically in agriculture evapotranspiration can be closely related to water demand. This means that the role of evapotranspiration and losses due to evapotranspiration in agriculture which are foreseeable to a certain extent can be handled in a way allowing to assure the best conditions for agricultural needs if water resources management is correctly planned and implemented. Hence in this chapter evapotranspiration assessment water demand fulfillment will be considered within the wider framework of water resources management and planning both for a correct evaluation of the water balance considering both the hydrological balance and the differences between water requirements and availability and for determining incoming drought events through appropriate indices drought monitoring . The issue of reducing water requirements meaning loss reductions and or .
