Leverhulme Centre for Climate Change Mitigation, Department of Animal and Plant Sciences, University of Sheffield, Sheffield, UK.
Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
Nat Plants. 2018 Mar;4(3):138-147. doi: 10.1038/s41477-018-0108-y. Epub 2018 Feb 19.
The magnitude of future climate change could be moderated by immediately reducing the amount of CO entering the atmosphere as a result of energy generation and by adopting strategies that actively remove CO from it. Biogeochemical improvement of soils by adding crushed, fast-reacting silicate rocks to croplands is one such CO-removal strategy. This approach has the potential to improve crop production, increase protection from pests and diseases, and restore soil fertility and structure. Managed croplands worldwide are already equipped for frequent rock dust additions to soils, making rapid adoption at scale feasible, and the potential benefits could generate financial incentives for widespread adoption in the agricultural sector. However, there are still obstacles to be surmounted. Audited field-scale assessments of the efficacy of CO capture are urgently required together with detailed environmental monitoring. A cost-effective way to meet the rock requirements for CO removal must be found, possibly involving the recycling of silicate waste materials. Finally, issues of public perception, trust and acceptance must also be addressed.
未来气候变化的幅度可以通过立即减少能源生产过程中进入大气的 CO 量，并采取积极从大气中去除 CO 的策略来缓解。通过向农田中添加粉碎的、快速反应的硅酸盐岩石来改善土壤的生物地球化学性质就是这样一种去除 CO 的策略。这种方法有可能提高作物产量，增加对病虫害的保护，并恢复土壤肥力和结构。全球管理的耕地已经具备了向土壤中频繁添加岩石粉尘的条件，因此可以快速大规模采用，而且潜在的好处可能会为农业部门的广泛采用提供经济激励。然而，仍然存在需要克服的障碍。迫切需要对 CO 捕获功效进行经过审核的田间规模评估，并进行详细的环境监测。必须找到一种具有成本效益的方法来满足 CO 去除所需的岩石要求，可能涉及到硅酸盐废料的回收利用。最后，还必须解决公众认知、信任和接受等问题。
