Response of soil microbial community parameters to plastic film mulch: A meta-analysis

• Published in: Geoderma Vol. 418; p. 115851
• Main Authors: Li, Yüze, Xie, Huanxin, Ren, Zhangheng, Ding, Yunpeng, Long, Mei, Zhang, Guangxin, Qin, Xiaoliang, Siddique, Kadambot H.M., Liao, Yuncheng
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.07.2022
• Subjects: agricultural management; agroecosystems; community structure; Crop yield; edaphic factors; enzymes; films (materials); meta-analysis; Microbial abundance; Microbial diversity; Microbial functionality; mineral fertilizers; nitrogen; organic fertilizers; Plastic film; plastic film mulches; soil; soil microorganisms; species diversity; tillage; Microbial functionality; Microbial diversity; Microbial abundance; Plastic film; Crop yield
• ISSN: 0016-7061; 1872-6259
• DOI: 10.1016/j.geoderma.2022.115851

•Meta-analysis was conducted to study the response of soil microbiome to plastic film mulch (PM).•PM increased microbial α-diversity, abundance, and functionality, while decreased β-diversity.•Thick film was characterized greater benefits on microbial abundance and functions.•The improvement of crop yields by PM were in tandem with the microbial functions. Plastic film mulch alters the soil environment and improves crop production. Although the response of aboveground parts of agroecosystems to plastic film mulch has been extensively studied, no studies have investigated the response of the soil microbiome to plastic film mulch and its effect on crop yield. Here, we performed a meta-analysis of 536 observations to elucidate the response of the soil microbial community to plastic film mulch. Plastic film mulch significantly increased soil microbial alpha-diversity (Shannon: +0.043, 95% CI: +0.022 to + 0.064; richness: +0.037, 95% CI: +0.007 to + 0.067), abundance (+0.104, 95% CI: +0.070 to + 0.139), and eco-functionality (+0.129, 95% CI: +0.087 to + 0.170). In neutral pH soil and field combined plastic film mulch with ridge–furrow tillage, plastic film mulch had a significant impact on microbial richness. Microbial abundance increased significantly when chemical fertilizer was used, but not when organic fertilizer was used. The effect of low-level nitrogen on N acquisition enzyme actives is greater than that of medium and high nitrogen input. Thick film mulch produced a larger positive response in microbial abundance, C acquisition, and oxidative enzyme activities than thin film mulch. Changes in microbial functionality were decoupled with diversity, while in tandem with its abundance and community structure. The increases in microbial C acquisition, N acquisition, and oxidative enzyme activities were significantly linked to yield. Our findings highlight the beneficial effects of plastic film mulch on the soil microbial community and have further implications for the development of soil health-friendly agricultural management.