نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشیار،گروه مهندسی اقتصاد کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان.
2 دانشآموخته کارشناسیارشد، گروه مهندسی اقتصاد کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان.
3 دانشآموخته دکتری، گروه زمینشناسی مهندسی، دانشگاه تربیت مدرس، تهران.
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
This study investigates the factors influencing groundwater extraction by farmers and users in Golestan Province. Data were collected from 131 agricultural deep wells during the 2022–2023 crop year using stratified random sampling and structured questionnaires. Various functional forms of groundwater extraction were analyzed, with the Cobb-Douglas function identified as the best-fitting model. The findings indicate that a 1% decrease in the discharge rate of agricultural wells leads to a 0.97% reduction in water extraction. Similarly, a 1% reduction in land area per well results in a 0.03% decrease in water use. Reducing daily operation time by 1% lowers water extraction by 0.95%, while a 1% decrease in the number of annual operation days reduces extraction by 0.96%. Interestingly, due to the low cost of electricity, the relationship between electricity expenses and groundwater extraction is positive. Therefore, unless electricity costs become a more substantial share of total production expenses, increasing electricity prices alone are unlikely to curb over-extraction. The study concludes that policymakers should employ a combination of economic and technical measures to effectively implement the groundwater balancing plan in Golestan Province’s aquifers.
کلیدواژهها [English]
DOI: 10.22034/iaes.2016.21431
DOI: 10.22052/deej.2018.7.22.11