Scientific findings since the 1980s indicate conventional agriculture (CONVA) accounts for 8 to 12% of U.S. greenhouse gas (GHG) emissions, or 23% of the country's total anthropogenic forcing of climate change. In contrast, according to the United Nations Environmental Programs (UNEP), regenerative agriculture (RA) practices, such as, no‐till (NT) has helped reduce emission of 241 Tg of carbon dioxide (CO₂) since the 1970s. U.S. Farm Bills and other international policies have helped encourage adoption of RA practices, such as NT, but major challenges remain, if a potential climate change impact of CONVA is to be reduced. One approach would be to adopt more efficient and robust production systems such as RA. Regenerative agriculture is designed to minimize external inputs and off‐site impacts, and has globally been adopted on ∼180 M ha, with the most common U.S. practice being NT on 22.6% of the cropland. Currently, the economic benefits of RA are the most evident on smallholder farms, where higher yields and decreased labor for land preparation including weeding (9 and 19 d ha⁻¹, respectively) have been recorded. A greater RA return to labor compared with CONVA suggests it may be an efficient low‐input farming approach that requires less energy and reduces waste while sustaining productivity and perhaps increasing profitability within a semi‐closed system. No‐till is used here to illustrate the proposed system because it reduces CO₂ release into the atmosphere and increases surface‐layer SOC storage. Globally, there is significant room for RA improvement, confirming the need for additional research and technology transfer along with robust policy articulation.

中文翻译：

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使再生农业的科学与政策保持一致

自1980年代以来的科学发现表明，常规农业（CONVA）占美国温室气体（GHG）排放量的8至12％，占该国人为强迫气候变化总量的23％。相比之下，根据联合国环境规划署（UNEP）的规定，免耕（NT）等再生农业（RA）的做法有助于减少241 Tg的二氧化碳（CO ₂）自1970年代以来。美国《农业法案》和其他国际政策帮助鼓励采用北领地做法，例如北约，但是如果要减少CONVA对气候变化的潜在影响，仍然存在重大挑战。一种方法是采用更有效，更强大的生产系统，例如RA。再生农业旨在最大程度地减少外部投入和异地影响，已在全球约1.8亿公顷土地上被采用，美国最常见的作法是在22.6％的农田上使用新约。当前，RA的经济利益在小农户农场上最为明显，在这些小农户中，较高的产量和减少的土地准备工作（包括除草）（9和19 d ha ^-1，分别）已被记录。与CONVA相比，RA的劳动回报率更高，这表明这是一种有效的低投入耕作方式，需要较少的能源并减少浪费，同时保持生产率，并在半封闭系统中提高利润率。这里使用免耕法来说明拟议的系统，因为它减少了向大气中释放的CO ₂并增加了表层SOC的存储量。在全球范围内，RA的改进空间很大，从而确认了需要进行更多研究和技术转让以及强有力的政策阐述。