جستجوی مقالات مرتبط با کلیدواژه « راهکار سیاستی مناسب » در نشریات گروه « آب و خاک »

Conservation of surface water and groundwater resources needs to be applied appropriate strategies and policies in this context that more understanding of farmer's behavior is vital. Therefore, in present study used of positive mathematical programming (PMP) and production function with constant elasticity of substitution (CES) approach to investigate farmer's behavior in surface water and groundwater usage and determination the appropriate policy programming to conservation of Qazvin plain water resources. The investigated strategies include increasing the price of irrigation water and reducing the availability water resources that each under the various scenarios was investigated. The required data in this study are related to year 2011-2012 that by referring to the relevant departments in Qazvin province was collected. The results showed that each two investigated approaches in this study leads to saving irrigation water, but the changes mean of gross margin by applying the availability water reducing policy and increasing the price of irrigation water policy 15.94 and 27.61 percent decrease respectively. The economic irrigation water productivity also in condition of above policy implementation changes of 0.435 to 0.331 and 0.434 to 0.230 the thousands of cubic meters respectively. Therefore, the reducing water availability policy according to the less reduction of the gross margin resulting from cropping pattern and more economic water productivity was proposed to conservation of Qazvin plain surface water and groundwater resources.