Zhang Si-Hai, Shen Yi, Lin Le-Feng, Tang Su-Lei, Liu Chun-Xiao, Fang Xiang-Hua, Guo Zhi-Ping, Wang Ying-Ying, Zhu Yang-Chun
College of Liangshan, Lishui University, Lishui, Zhejiang Province, China.
College of Ecology, Lishui University, Lishui, Zhejiang Province, China.
PeerJ. 2024 Dec 5;12:e18642. doi: 10.7717/peerj.18642. eCollection 2024.
Biochar, a carbon-rich material that has attracted considerable interest in interdisciplinary research, is produced through a process known as pyrolysis, which involves the thermal decomposition of organic material in the absence of oxygen. Bamboo biochar is a specific type of biochar, manufactured from bamboo straw through carbonisation at 800 °C and subsequent filtration through a 100-mesh sieve. There is currently a lack of research into the potential benefits of bamboo biochar in improving soil quality in tea gardens. The aim of this study was to investigate the effect of bamboo biochar on the physicochemical properties, enzymatic activity, and microbial community structure of tea garden soils. The results demonstrate that the integration of bamboo biochar into the soil significantly enhanced the soil pH, total nitrogen, available nitrogen, total phosphorus, available phosphorus, available potassium, and slowly available potassium by 15.3%, 52.0%, 91.5%, 91%, 48.4%, 94.2%, and 107.7%, respectively. In addition, soil acid phosphatase activity decreased significantly by 52.5%. In contrast, the activities of sucrase, catalase, and β-glucosidase increased substantially by 54.0%, 68.7%, and 68.4%, respectively, when organic fertilizer and bamboo biochar were applied concurrently. Additionally, the Shannon, Simpson, and Pielou diversity indices of the microbial communities were significantly enhanced. Following the incorporation of bamboo biochar in the soil samples, the relative abundance of Proteobacteria increased significantly, whereas that of Acidobacteria decreased. Various concentrations of bamboo biochar markedly influenced microbial markers in the soil. The results of this study suggest that the application of bamboo biochar to soil may modestly improve its physicochemical properties, enzyme activity, and microbial community structure. These findings provide a foundation for future investigations on soil ecological restoration.
生物炭是一种富含碳的材料，在跨学科研究中引起了广泛关注，它是通过一种称为热解的过程产生的，该过程涉及在无氧条件下有机材料的热分解。竹炭是生物炭的一种特殊类型，由竹秸秆在800℃碳化并随后通过100目筛网过滤制成。目前，关于竹炭对茶园土壤质量潜在益处的研究较少。本研究的目的是探讨竹炭对茶园土壤理化性质、酶活性和微生物群落结构的影响。结果表明，将竹炭融入土壤显著提高了土壤pH值、全氮、有效氮、全磷、有效磷、速效钾和缓效钾，分别提高了15.3%、52.0%、91.5%、91%、48.4%、94.2%和107.7%。此外，土壤酸性磷酸酶活性显著下降了52.5%。相比之下，当同时施用有机肥和竹炭时，蔗糖酶、过氧化氢酶和β-葡萄糖苷酶的活性分别大幅提高了54.0%、68.7%和68.4%。此外，微生物群落的香农、辛普森和皮洛多样性指数显著提高。在土壤样品中加入竹炭后，变形菌门的相对丰度显著增加，而酸杆菌门的相对丰度则下降。不同浓度的竹炭对土壤中的微生物标志物有显著影响。本研究结果表明，将竹炭施用于土壤可能会适度改善其理化性质、酶活性和微生物群落结构。这些发现为未来土壤生态修复研究提供了基础。
