Current food production practices tend to damage and deplete soil, diminish biodiversity, and degrade water supplies. For agriculture to become environmentally sustainable and simultaneously increase food output for a growing world population, fundamental changes in agricultural production systems are required. Renewable energy can reduce greenhouse gases (GHGs) but we also need simple, low‐cost approaches to remove atmospheric carbon and sequester it in stable forms. Recycling of digestate from the anaerobic digestion of agricultural and waste materials to soils can sequester atmospheric carbon and provide many other economic, social and environmental benefits. Biogasdoneright™ (BDR) is a set of practices that link biogas production with sustainable agriculture. The BDR approach to sustainable agriculture is being implemented on a large scale in Italy. In this paper, we examine the potential impact of implementing BDR in selected other countries. The biomethane potential in these countries, estimated conservatively, varies from about 10–30% of their current annual natural gas consumption. Biomethane from sequential (double) crops provides by far the greatest fraction of the biomethane potential. Double cropping also drives many of the environmental and economic benefits of BDR systems. Depending on where and how widely it is implemented, the production of biogas in BDR systems could have very significant national‐level impacts. For example, sufficient biomethane could be produced in Argentina to completely eliminate imports of natural gas, equivalent to about 28% of Argentina's 2017 trade deficit. In the USA, renewable biogas could generate electricity equal to nearly all of the electricity currently produced by domestic solar and wind resources. © 2020 Society of Chemical Industry and John Wiley & Sons, Ltd

中文翻译：

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扩大可持续沼气生产的潜力以及在某些国家的可能影响

当前的粮食生产做法往往会破坏和耗尽土壤，减少生物多样性并降低水供应。为了使农业在环境上可持续发展并同时为不断增长的世界人口增加粮食产量，需要对农业生产系统进行根本性的改变。可再生能源可以减少温室气体（GHGs），但是我们还需要简单，低成本的方法来去除大气中的碳并将其以稳定的形式隔离。将农业和废料的厌氧消化中的消化物再循环到土壤中可以隔离大气中的碳，并提供许多其他的经济，社会和环境效益。Biogasdoneright™（BDR）是一套将沼气生产与可持续农业联系起来的实践。BDR可持续农业的方法正在意大利大规模实施。在本文中，我们研究了在某些其他国家/地区实施BDR的潜在影响。保守估计，这些国家的生物甲烷潜力约占其当前年度天然气消费量的10％至30％。顺序（双季）作物产生的生物甲烷提供了迄今为止最大的生物甲烷潜力。双重种植还推动了BDR系统的许多环境和经济利益。根据实施的地点和范围，BDR系统中的沼气生产可能会在国家层面产生重大影响。例如，阿根廷可以生产足够的生物甲烷以完全消除天然气的进口，约等于阿根廷2017年贸易逆差的28％。在美国，可再生沼气的发电量几乎等于当前国内太阳能和风能发电量的全部。©2020年化学工业协会和John Wiley＆Sons，Ltd