Islamic Azad University, Department of Agricultural Economy, Karaj Branch, Karaj, Iran.
Braz J Biol. 2024 Feb 26;83:e277383. doi: 10.1590/1519-6984.277383. eCollection 2024.
The issue of climate change caused by global warming has become a major concern and challenge around the world, requiring comprehensive countermeasures. Agriculture is the most affected part of climate change and Iran's agriculture economy is at risk because of hot and dry and damages due global climate changes. This study investigates the effects of climatic variables temperature, such as precipitation, carbon and dioxide emission on total crop production in Iran from 1971 to 2020 using a fully modified conventional least squares econometric model (FMOLS). Chemical fertilizer and crop area variables, as well as fixed capital in agricultural have machinery, also been used as indicators of technology. The results showed that all variables had a significant effect on production. The average annual temperature and total annual rainfall its had an inverse U-shaped relationship with production, and were significant. Fertilizer and crop area variables had a positive effect, while CO2 had a negative relationship on total crop production in Iran. The findings of this study can be used to provide strategic plans for policymakers in the face of climate change. It is suggested that the government invest more in the mechanization of the agricultural sector and provide facilities and credits with priority given to farmers' education and the use of temperature-resistant varieties, and also act regionally against climate change.
全球变暖导致的气候变化问题已成为全世界关注的主要问题和挑战,需要采取全面的应对措施。农业是受气候变化影响最大的部分,由于全球气候变化导致的炎热和干燥以及破坏,伊朗的农业经济面临风险。本研究使用完全修正的传统最小二乘计量经济学模型(FMOLS),从 1971 年到 2020 年调查了气候变量(如降水、碳和二氧化碳排放)对伊朗作物总产量的影响。化肥和作物面积变量以及农业中的固定资本(如农业机械)也被用作技术指标。结果表明,所有变量对产量都有显著影响。年平均温度和总年降雨量与产量呈倒 U 型关系,且具有显著性。化肥和作物面积变量对伊朗的作物总产量有正向影响,而 CO2 则呈负相关。本研究的结果可用于为决策者应对气候变化提供战略规划。建议政府加大对农业机械化的投资,为农民提供设施和信贷,并优先考虑农民的教育以及使用抗高温品种,还应采取区域性措施应对气候变化。