College of Forestry, Beijing Forestry University, Beijing, P.R. China.
PLoS One. 2018 Nov 26;13(11):e0207494. doi: 10.1371/journal.pone.0207494. eCollection 2018.
This research was conducted to compare chemical and microbiological properties during aerobic composting (AC) and vermicomposting (VC) of green waste. Relative to AC, VC significantly decreased the pH and lignin and cellulose contents, and significantly increased the electrical conductivity and total N and available P contents. For AC, BIrii41_norank (order Myxococcales) was the major bacterial genus at 30 d and again became dominant genus from 90-150 d, with relative abundances of 2.88% and 4.77-5.19%, respectively; at 45 d and 60 d, the dominant bacterial genus was Nitrosomonadaceae_uncultured (order Nitrosomonadales) with relative abundances of 2.83-7.17%. For VC, the dominant bacterial genus was BIrii41_norank (except at 45 d), which accounted for 2.11-7.96% of the total reads. The dominant fungal class was Sordariomycetes in AC (relative abundances 39.2-80.6%) and VC (relative abundances 42.1-69.5%). The abundances of microbial taxa and therefore the bacterial and fungal community structures differed between VC and AC. The quality of the green waste compost product was higher with VC than with AC. These results will also help to achieve further composting technology breakthroughs in reducing the composting time and improving compost quality.
本研究旨在比较好氧堆肥（AC）和蚯蚓堆肥（VC）过程中绿色废物的化学和微生物特性。与 AC 相比，VC 显著降低了 pH 值以及木质素和纤维素含量，而显著增加了电导率以及总氮和有效磷含量。对于 AC，BIrii41_norank（Myxococcales 目）是 30 天时的主要细菌属，在 90-150 天时再次成为优势属，相对丰度分别为 2.88%和 4.77-5.19%；在 45 天和 60 天时，优势细菌属为 Nitrosomonadaceae_uncultured（Nitrosomonadales 目），相对丰度为 2.83-7.17%。对于 VC，优势细菌属为 BIrii41_norank（仅在 45 天时除外），占总reads 的 2.11-7.96%。在 AC（相对丰度 39.2-80.6%）和 VC（相对丰度 42.1-69.5%）中，优势真菌类群均为 Sordariomycetes。AC 和 VC 之间的微生物类群丰度和因此的细菌和真菌群落结构存在差异。与 AC 相比，VC 产生的绿色废物堆肥产品质量更高。这些结果也将有助于在减少堆肥时间和提高堆肥质量方面取得进一步的堆肥技术突破。
