Modelling for water supply of irrigated cropping systems on climate change
نویسندگان
چکیده
منابع مشابه
Climate change and the water cycle in newly irrigated areas.
Climate change is affecting agriculture doubly: evapotranspiration is increasing due to increments in temperature while the availability of water resources is decreasing. Furthermore, irrigated areas are expanding worldwide. In this study, the dynamics of climate change impacts on the water cycle of a newly irrigated watershed are studied through the calculation of soil water balances. The stud...
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We evaluated the eff ects of irrigated crop management practices on nitrous oxide (N2O) emissions from soil. Emissions were monitored from several irrigated cropping systems receiving N fertilizer rates ranging from 0 to 246 kg N ha−1 during the 2005 and 2006 growing seasons. Cropping systems included conventional-till (CT) continuous corn (Zea mays L.), no-till (NT) continuous corn, NT corn–dr...
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Operation principles of water supply systems are considered and the mathematical expressions for the system major components such as pipes, reservoirs and pumps are represented. Behaviour of thesystem is investigated by slow movement of fluid flow around steady-state operating point. Head losses changing nonlinearly with water flowrates in pipes are represented by the Darcy-Weisbach and the Haz...
متن کاملDesigning a new cropping system for high productivity and sustainable water usage under climate change
The food supply is being increasingly challenged by climate change and water scarcity. However, incremental changes in traditional cropping systems have achieved only limited success in meeting these multiple challenges. In this study, we applied a systematic approach, using model simulation and data from two groups of field studies conducted in the North China Plain, to develop a new cropping ...
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ژورنال
عنوان ژورنال: Italian Journal of Agronomy
سال: 2012
ISSN: 2039-6805,1125-4718
DOI: 10.4081/ija.2012.e14