According to the Intergovernmental Panel on Climate Change (IPCC), agriculture is a main source of negative greenhouse gases. The calculations are based on empirical facts but also, like all research, on certain perspectives or paradigms including assumptions and subjective choices of system boundaries for analysis. Greenhouse gases in relation to agriculture are often presented in diagrams showing, for example, arrows of emissions from soil, cattle, tractors, and manure storage. However, the fundament of agriculture is the photosynthesis. Carbon dioxide (CO₂) is caught by crops that, in turn, produce oxygen (O₂) and at the same time binds carbon (C) in roots and shoots. One part of this C transforms into soil organic C, and that is sometimes discussed in research, the public debate, and by IPCC. But the main part transforms into harvested crops, that is, cereals like wheat (Triticum aestivum L.), and other carbohydrate products like pea (Pisum sativum L.) or oilseed. This last‐mentioned photosynthesis effect is not, in the IPCC calculations, considered as a positive climate contribution from the agricultural sector. The consequence of this might be that policymakers will not understand the whole picture of agriculture in relation to climate effects; and therefore make decisions that affect food production, climate change, and biodiversity in a not optimal way from a holistic sustainability viewpoint.

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关于在气候计算中重新考虑农业的提案

根据政府间气候变化专门委员会（IPCC）的研究，农业是负温室气体的主要来源。计算是基于经验事实，但也像所有研究一样，基于某些观点或范式，包括对系统边界的假设和主观选择进行分析。与农业相关的温室气体通常以图表的形式显示，例如，显示了来自土壤，牛，拖拉机和粪便存储的排放箭头。但是，农业的基础是光合作用。二氧化碳（CO ₂）被农作物捕获，进而产生氧气（O ₂），并同时在根部和枝条中结合碳（C）。该碳的一部分转化为土壤有机碳，有时在研究，公众辩论中以及由IPCC讨论。但是主要部分变成了收获的农作物，即谷物，例如小麦（Triticum aestivum L.）和其他碳水化合物产品，例如豌豆（Pisum sativum）L.）或油料种子。在IPCC的计算中，这种最后提到的光合作用效应没有被认为是农业部门对气候的积极贡献。其结果可能是政策制定者将不了解农业与气候影响有关的全部情况。因此，从整体的可持续性角度出发，以非最佳方式做出影响粮食生产，气候变化和生物多样性的决策。