The global production of biogas has increased threefold during the last decade to partly replace fossil fuels, yet biogas production by anaerobic digestion generates substantial amounts of by-products named digestates. These biogas digestates can be recycled in soils to fertilize crops and to sequester carbon. Nonetheless, the impact of digestates on the soil biological is actually poorly known. Here, we reviewed the impact of digestates published in 56 articles reporting 23 microbial parameters. Half of the articles show neutral effects of biogas digestates and 7% showed negative effects. 25% of the articles show more stimulation of the soil microbial quality by biogas digestates, whereas 17% of the articles show less stimulation, compared to other organic fertilizers.

在过去十年中，全球沼气产量增加了三倍，以部分替代化石燃料，但通过厌氧消化生产的沼气会产生大量称为沼渣的副产品。这些沼气消化物可以在土壤中循环利用，为作物施肥和固碳。尽管如此，消化物对土壤生物学的影响实际上鲜为人知。在这里，我们回顾了发表在 56 篇报道 23 种微生物参数的文章中的消化物的影响。一半的文章显示沼气消化物的中性影响，7% 的文章显示负面影响。与其他有机肥料相比，25% 的文章显示沼气对土壤微生物质量的刺激更大，而 17% 的文章显示对土壤微生物质量的刺激较小。