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首页> 外文期刊>Agronomy for Sustainable Development >Carbon footprints and carbon stocks reveal climate-friendly coffee production
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Carbon footprints and carbon stocks reveal climate-friendly coffee production

机译：碳足迹和碳储量揭示了气候友好型咖啡的生产

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Coffee production is impacting the climate by emitting greenhouse gasses. Coffee production is also vulnerable to climate change. As a consequence, the coffee sector is interested in climate-friendly forms of coffee production, but there is no consensus of what exactly this implies. Therefore, we studied two aspects of the climate impact of coffee production: the standing carbon stocks in the production systems and the product carbon footprint, which measures the greenhouse gas emissions per unit weight of coffee produced. We collected data from 116 coffee farms in five Latin American countries, Mexico, Guatemala, Nicaragua, El Salvador, and Colombia, for four coffee production systems: (1) traditional polycultures, (2) commercial polycultures, (3)shaded monocultures, and (4) unshaded monocultures. We found that polycultures have a lower mean carbon footprint, of 6.2-7.3 kg CO_2-equivalent kg~(-1) of parchment coffee, than monocultures, of 9.0-10.8 kg. We also found that traditional polycultures have much higher carbon stocks in the vegetation, of 42.5 Mg per ha, than unshaded monocultures, of 10.5 Mg. We designed a graphic system to classify production systems according to their climate friendliness. We identified several strategies to increasepositive and reduce negative climate impacts of coffee production. Strategies include diversification of coffee farms with trees, the use of their wood to substitute for fossil fuel and energy-intensive building materials, the targeted use of fertilizer,and the use of dry or ecological processing methods for coffee instead of the traditional fully washed process.
机译：咖啡的生产通过排放温室气体来影响气候。咖啡生产也容易受到气候变化的影响。结果，咖啡部门对气候友好型的咖啡生产很感兴趣，但是对于这到底意味着什么尚无共识。因此，我们研究了咖啡生产对气候的影响的两个方面：生产系统中的固定碳储量和产品碳足迹，该碳足迹测量的是单位生产咖啡的温室气体排放量。我们从五个拉丁美洲国家（墨西哥，危地马拉，尼加拉瓜，萨尔瓦多和哥伦比亚）的116个咖啡农场收集了以下四种咖啡生产系统的数据：（1）传统多元文化，（2）商业多元文化，（3）阴影单一文化和（4）不带阴影的单一文化。我们发现，混合栽培的平均碳足迹较低，为6.2-7.3 kg二氧化碳当量kg〜（-1）的羊皮咖啡，低于单一栽培的9.0-10.8 kg。我们还发现，传统的混养在植被中的碳储量要高得多，每公顷为42.5 Mg，而无阴影的单养是10.5 Mg。我们设计了一个图形系统，根据其气候友好程度对生产系统进行分类。我们确定了几种提高咖啡生产的正向和减少负面气候影响的策略。策略包括采用树木的咖啡农场多样化，使用其木材替代化石燃料和能源密集型建筑材料，有针对性地使用化肥以及对咖啡采用干燥或生态加工方法，而不是传统的完全洗涤方法。

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