نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکترای گروه مهندسی آب، دانشکده کشاورزی، دانشگاه صنعتی اصفهان.
2 استاد گروه مهندسی آب، دانشکده کشاورزی، دانشگاه صنعتی اصفهان، اصفهان، ایران
3 استادیار گروه مهندسی آب، دانشکده کشاورزی، دانشگاه صنعتی اصفهان.
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The severe shortage of surface and groundwater resources is the most important constraint on sustainable agricultural development in hot and dry areas. In the present study, the effects of developing irrigation systems and changing cultivation patterns on irrigation requirements in climate change have been investigated. The CanESM2 model was used to simulate future climatic parameters and their impact on irrigation requirements in RCP2.6, RCP4.5, and RCP8.5 emissions scenarios. Also to simultaneously investigate the effect of improving irrigation efficiency, climate change, and changing cultivation patterns on gross irrigation needs; First, changes in cultivation patterns and irrigation systems of Kavar plain during a decade were evaluated, then different management scenarios were defined. The simulation results of climatic parameters showed that in all three scenarios of emissions, temperature increases and precipitation decreases. Accordingly, the rate of increase in gross irrigation requirements for different plants under the RCP2.6 scenario is between 4 and 8%; under the RCP4.5 scenario between 6 to 13 and under RCP8.5 scenario between 8 to 18% were predicted. Also, the study of changes in the levels of cultivation pattern and development of irrigation systems in the region showed that by designing and adjusting the cultivation pattern and improving the efficiency of surface and pressurized irrigation, in dry and normal years between 21 to 40%, the amount of groundwater abstraction reduced the plain.
کلیدواژه‌ها [English]
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