生物炭调节绵羊粪肥堆肥过程中细菌-真菌多样性及相关酶活性。
Biochar regulates bacterial-fungal diversity and associated enzymatic activity during sheep manure composting.
机构信息
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China.
College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China; Swedish Centre for Resource Recovery, University of Borås, 50190 Borås, Sweden.
出版信息
Bioresour Technol. 2022 Feb;346:126647. doi: 10.1016/j.biortech.2021.126647. Epub 2021 Dec 30.
Aimed to evaluate the coexistence of bacterial and fungal diversity and their correlation with enzymatic activity in response to biochar. This study performed aerobic composting based on typical agricultural wastes of sheep manure with additive apple tree branch biochar at distinct concentration (0, 2.5, 5, 7.5, 10 and 12.5% corresponding from T1 to T6). The result demonstrated that appropriate amendment of biochar enriched bacterial diversity (1646-1686 OTUs) but interestingly decreased fungal diversity (542-630 OTUs) compared to control (1444 and 682 OTUs). Biochar addition enhanced all enzymatic activities and its correlation with bacterial was more complex than fungal community (786 and 359 connect edges). The dominant microbes comprised of Firmicutes (45.2-35.2%), Proteobacteria (14.0-17.5%), Basidiomycota (32.4-49.5%) and Ascomycota (11.3-37.5%) among all the treatments. Overall, biochar regulates the composting microenvironment by influencing the microbial diversity and associated enzymatic activities.
本研究旨在评估细菌和真菌多样性的共存及其与生物炭响应下酶活性的相关性。该研究基于绵羊粪肥与不同浓度（0、2.5、5、7.5、10 和 12.5%，分别对应 T1 到 T6）的苹果树树枝生物炭添加剂进行好氧堆肥。结果表明，与对照相比（1444 和 682 个 OTUs），适量添加生物炭可丰富细菌多样性（1646-1686 个 OTUs），但有趣的是降低了真菌多样性（542-630 个 OTUs）。生物炭的添加增强了所有酶活性，其与细菌的相关性比真菌群落更为复杂（786 和 359 个连接边缘）。在所有处理中，主要微生物包括厚壁菌门（45.2-35.2%）、变形菌门（14.0-17.5%）、担子菌门（32.4-49.5%）和子囊菌门（11.3-37.5%）。总的来说，生物炭通过影响微生物多样性及其相关酶活性来调节堆肥微环境。
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