微塑料和生物炭相互作用影响烟草种植土壤的氧化排放
Feier Wang1, Hongguang Cheng2, Shan Lin1
1Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
The Science of the total environment
|August 31, 2024
概括
生物炭的应用可以减少酸性烟草土壤中的氧化 (N2O) 排放,即使存在微塑料. 与微塑料同时使用生物炭抑制了N2O排放,这表明生物炭的排放减少了.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 土壤科学 土壤科学
背景情况:
- 酸性烟草土壤可以通过生物炭改善,减少氧化 (N2O) 排放.
- 农业微塑料很普遍,可以影响土壤N2O排放,特别是与生物炭结合时.
研究的目的:
- 研究不同微塑料 (PE,PLA,PBAT) 和大米生物炭单独和组合对土壤N2O排放的影响.
- 分析土壤化学特性,循环基因和烟草种植土壤中的微生物多样性的影响.
- 了解生物炭在修复微塑料污染土壤和减轻N2O排放方面的作用.
主要方法:
- 用三种微塑料类型 (PE,PLA,PBAT) 和大米生物炭在实验室中化烟草土壤.
- 在35天内测量土壤N2O排放量.
- 分析土壤化学特性,循环相关的功能基因和微生物功能多样性.
主要成果:
- 聚乙烯 (PE) 和聚乳酸 (PLA) 微塑料显著增加了N2O排放,分别增加了15.96%和21.52%.
- 不同的微塑料通过不同的调节途径影响了土壤N2O排放.
- 与微塑料单独相比,微塑料和生物炭的同时应用抑制了N2O排放.
结论:
- 生物炭的应用减轻了微塑料引起的N2O排放增加,主要是通过增强nosZ基因.
- 生物炭可以修复受微塑料污染的土壤,并减少它们对环境的负面影响.
- 这项研究提供了对微塑料对土壤循环和生物炭修复潜力的影响的见解.
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