长期的无耕作实践与重复使用的塑料薄膜覆盖加剧了基于塑层的干旱地区的细菌生态风险
Ya-Nan Han1, Yang Yi1, Jian-Yu Su1
1School of Life Sciences, Ningxia University, Yinchuan, 750021, China.
Environmental pollution (Barking, Essex : 1987)
|August 13, 2025
概括
重复使用的塑料薄膜覆改变了土壤细菌群落,减少了多样性并增加了人类疾病风险,特别是经过气候变化的塑料薄膜. 这凸显了农业塑料使用的生态问题.
科学领域:
- 环境微生物学 环境微生物学
- 农业科学 农业科学
- 土壤生态学 土壤生态学
背景情况:
- 重复使用的塑料薄膜 (RUPF) 覆盖被用于中国,以减少干旱地区的塑料废物.
- 塑料污染对土壤细菌群落和RUPF系统中的生态过程的影响尚不清楚.
研究的目的:
- 在不同的RUPF暴露场景下调查土壤细菌群落的分布和聚集.
- 为了比较细菌群落和功能在气候变化的塑料薄膜塑层 (WPS),土壤埋藏的塑料薄膜塑层 (BPS) 和控制土壤 (CK) 中.
主要方法:
- 分析土壤细菌的α和β多样性.
- 评估细菌社区组装过程 (随机与决定性).
- 评估细菌共发生网络和功能配置文件.
主要成果:
- 与CK和BPS相比,WPS显示细菌多样性显著减少.
- 确定性过程对塑料球的影响比CK更大;WPS的细菌迁移速度较慢,而BPS的竞争力更高.
- 与CK相比,Plastispheres表现出改变的细菌功能和显著更高水平的人类疾病相关途径,毒性因素和病原体.
结论:
- 耐候塑料薄膜覆 (WPS) 创造了独特的细菌群落和功能,比埋在土壤中的塑料薄膜 (BPS) 或控制土壤 (CK) 构成更高的生态风险.
- 需要有效的战略来减轻与农业重复使用塑料薄膜相关的生态风险.
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