High-latitude regions are not traditionally considered for energy crop production due to unfavorable production conditions, e.g., low temperatures and short growing seasons. However, with increasing pressures on land use in warmer regions, rising global food demands, and climate change, shifting energy crop production to cold climate regions has become a desirable alternative. Increasing attempts have been made in recent decades to cultivate cold-tolerant energy crops in high latitudes. This study aims to assess the potential biomass and bioenergy productivities of willow, poplar, and miscanthus over the Russian Far East (RFE) federal district, with a yield-predicting model built on newly published data from high latitude. We evaluated the potentials of energy crop production and greenhouse gas mitigation in RFE under three land use scenarios. Our analysis reveals that the RFE has the potential to produce 1.3 × 10 Mg of biomass per year on 215 Mha of spare land with an average yield of 6 Mg ha under the most extensive land conversion scenario, which can be converted to 24 EJ of bioenergy and thus lead to a net mitigation of 4.1 × 10 Mg COe greenhouse gas emissions. The productivity and mitigation potential remain substantial (78 % of the most extensive land conversion scenario) under the scenario that all the RFE's existing croplands and forests are preserved. Our assessment offers valuable insights into the potential of energy crop development in the RFE and other high-latitude regions globally, presenting a novel land-use solution for a low-carbon future.

中文翻译：

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俄罗斯远东地区能源作物生产潜力巨大


由于不利的生产条件，例如低温和生长季节短，高纬度地区传统上不被考虑用于能源作物生产。然而，随着温暖地区土地利用压力的增加、全球粮食需求的增加以及气候变化，将能源作物生产转移到寒冷气候地区已成为理想的替代方案。近几十年来，人们越来越多地尝试在高纬度地区种植耐寒能源作物。本研究旨在评估俄罗斯远东 (RFE) 联邦区柳树、杨树和芒草的潜在生物量和生物能源生产力，并根据新发布的高纬度数据建立产量预测模型。我们评估了 RFE 中三种土地利用情景下能源作物生产和温室气体减排的潜力。我们的分析表明，RFE 有潜力在 215 Mha 的闲置土地上每年生​​产 1.3 × 10 Mg 生物质，在最广泛的土地转换情景下平均产量为 6 Mg ha，可转换为 24 EJ 的生物能源从而净减少 4.1 × 10 Mg COe 温室气体排放。在保留 RFE 现有农田和森林的情况下，生产力和缓解潜力仍然很大（最广泛的土地转换情景的 78%）。我们的评估为 RFE 和全球其他高纬度地区的能源作物发展潜力提供了宝贵的见解，为低碳未来提出了一种新颖的土地利用解决方案。