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首页> 外文期刊>Scientific reports. >Climate-Driven Crop Yield and Yield Variability and Climate Change Impacts on the U.S. Great Plains Agricultural Production
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Climate-Driven Crop Yield and Yield Variability and Climate Change Impacts on the U.S. Great Plains Agricultural Production

机译：气候驱动的农作物产量以及产量变异性和气候变化对美国大平原农业生产的影响

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Climate variability and trends affect global crop yields and are characterized as highly dependent on location, crop type, and irrigation. U.S. Great Plains, due to its significance in national food production, evident climate variability, and extensive irrigation is an ideal region of investigation for climate impacts on food production. This paper evaluates climate impacts on maize, sorghum, and soybean yields and effect of irrigation for individual counties in this region by employing extensive crop yield and climate datasets from 1968–2013. Variability in crop yields was a quarter of the regional average yields, with a quarter of this variability explained by climate variability, and temperature and precipitation explained these in singularity or combination at different locations. Observed temperature trend was beneficial for maize yields, but detrimental for sorghum and soybean yields, whereas observed precipitation trend was beneficial for all three crops. Irrigated yields demonstrated increased robustness and an effective mitigation strategy against climate impacts than their non-irrigated counterparts by a considerable fraction. The information, data, and maps provided can serve as an assessment guide for planners, managers, and policy- and decision makers to prioritize agricultural resilience efforts and resource allocation or re-allocation in the regions that exhibit risk from climate variability.
机译：气候多变性和趋势影响全球农作物产量，其特征是高度依赖于地理位置，农作物类型和灌溉。美国大平原地区，由于其在国家粮食生产中的重要性，明显的气候多变性和广泛的灌溉，是研究气候对粮食生产影响的理想研究区域。本文通过采用1968-2013年间广泛的农作物产量和气候数据集，评估了气候对玉米，高粱和大豆产量的影响以及该地区各个县的灌溉效果。作物单产的变异性是区域平均单产的四分之一，这种变异性的四分之一由气候变异性解释，温度和降水以奇异或在不同位置组合解释。观察到的温度趋势有利于玉米单产，但不利于高粱和大豆的单产，而观察到的降水趋势对所有三种作物均有利。与未灌溉的农作物相比，灌溉的农作物的稳健性和对气候影响的有效缓解策略均得到了显着提高。所提供的信息，数据和地图可以用作规划者，管理者以及政策制定者和决策者的评估指南，以便在遭受气候多变风险的地区优先考虑农业抗灾力，资源分配或再分配。

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