Abstract The widespread historical and ongoing abandonment of agricultural lands worldwide presents important opportunities for promoting climate change mitigation through carbon sequestration. The default management outcome of abandonment is natural regeneration through ecological succession. However, several different management strategies and new land uses for abandoned agricultural lands have been recommended by the scientific community in recent years. This paper reviews the foremost proposed strategies and compares their soil carbon sequestration potentials. Six major categories have been proposed globally. Each proposal has positive and negative outcomes depending on site-specific factors and management objectives. Accordingly, no single strategy is ideal in all scenarios and a combination of strategies addresses multiple rural development goals concurrently. A combination of passive and active management techniques is the most effective approach for maximizing soil carbon sequestration over large geographic scales, while other strategies can be designed to also promote low-carbon land use practices and fossil fuel substitution. The implications of each proposal highlighted here demonstrates the positive role that abandoned agricultural lands can serve in climate change mitigation efforts, supporting policymakers tasked with planning the future of regions undergoing abandonment.

中文翻译：

---

农地废弃后土壤固碳的管理机会

摘要 世界范围内广泛的历史性和持续性的农地荒废为通过碳封存促进减缓气候变化提供了重要机会。废弃的默认管理结果是通过生态演替进行自然更新。然而，近年来科学界已经推荐了几种不同的管理策略和废弃农田的新土地用途。本文回顾了最重要的建议策略，并比较了它们的土壤固碳潜力。全球提出了六大类。每个提案都有积极和消极的结果，具体取决于特定地点的因素和管理目标。因此，没有一种策略在所有情况下都是理想的，策略组合可以同时解决多个农村发展目标。被动和主动管理技术的结合是在大地理范围内最大限度地提高土壤碳固存的最有效方法，而可以设计其他策略来促进低碳土地利用实践和化石燃料替代。此处强调的每项提案的含义都表明，废弃农田可以在减缓气候变化工作中发挥积极作用，支持负责规划废弃地区未来的决策者。同时还可以设计其他战略来促进低碳土地使用做法和化石燃料替代。此处强调的每项提案的含义都表明，废弃农田可以在减缓气候变化工作中发挥积极作用，支持负责规划废弃地区未来的决策者。同时还可以设计其他战略来促进低碳土地使用做法和化石燃料替代。此处强调的每项提案的含义都表明，废弃农田可以在减缓气候变化工作中发挥积极作用，支持负责规划废弃地区未来的决策者。