微塑料介导的土壤碳循环:微塑料对土壤有机碳的形成,矿化和稳定过程的影响 DOI

Jia SHI,

Xiang WANG,

Jie WANG

et al.

Scientia Sinica Technologica, Journal Year: 2024, Volume and Issue: 54(10), P. 1854 - 1867

Published: April 24, 2024

微塑料污染已成为全球生态系统最严重的威胁之一,其不仅对陆地和海洋生态系统、生物多样性和人体健康产生影响,还会通过影响土壤有机碳固定扰动全球气候。土壤中微塑料可以直接参与碳循环或间接影响理化性质和微生物群落来影响土壤有机碳周转过程。本文从微塑料影响土壤有机碳测定,以及微塑料介导的有机碳形成过程、矿化和稳定过程等方面,阐明了微塑料对土壤有机碳库的影响,并深入探讨了微塑料调控土壤有机碳循环的可能机制。未来需从微塑料源碳的精准识别、碳过程关键微生物作用机制、多因素影响下碳循环过程等方面开展进一步的研究工作。

Effects of Polyethylene and Poly (butyleneadipate-co-terephthalate) contamination on soil respiration and carbon sequestration DOI Creative Commons
Mengyu Liu,

Yao Yu,

Ying Liu

et al.

Environmental Pollution, Journal Year: 2024, Volume and Issue: 364, P. 125315 - 125315

Published: Nov. 20, 2024

To address plastic pollution in agricultural soils due to polyethylene film mulch used, biodegradable is being studied as a promising alternative material for sustainable agriculture. However, the impact of and microplastics on soil carbon remains unclear. The field experiment was conducted with Poly (butyleneadipate-co-terephthalate) debris (PBAT-D, 0.5-2 cm), low-density (LDPE-D, cm) microplastic (LDPE-Mi, 500-1000 μm) contaminated (0% (control), 0.05%, 0.1%, 0.2%, 0.5%, 1% 2% w:w) planted soybean, explore potential impacts respiration (Rs), organic (SOC) fractions (microbial biomass (MBC), dissolved (DOC), easily oxidizable (EOC), particulate (POC), mineral-associated (MAOC)), C-enzymes (β-glucosidase, β-xylosidase, cellobiohydrolase). Results showed that PBAT-D, LDPE-D LDPE-Mi significantly inhibited Rs compared control during flowering harvesting stages (p<0.05). SOC increased PBAT-D treatments at both stages, stage, but decreased stage. In treatments, POC DOC MAOC stages. MBC, EOC MBC while For C-enzymes, no significant inhibition observed they were all It concluded facilitates sequestration, which may potentially alter pool emissions. key significance this study overall effects different forms dynamics, inform future efforts farmlands.

Language: Английский

Citations

1

CDs/PBAT Nanofiber Films With High Tensile Strength and Flame‐Retardant Property via Microfluidic Technology DOI Open Access
Long Shi,

Jiang Zhai,

Qing Li

et al.

Journal of Polymer Science, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 25, 2024

ABSTRACT The poly(butylene adipate‐co‐terephthalate) (PBAT) nanofiber film prepared by electrospinning method exhibits limited application in many fields due to its poor flame retardancy and machinal property, despite being a biodegradable material with exceptional toughness ductility properties. In this work, we employed microfluidic technology continuously produce blue fluorescent carbon dots (CDs) on an aluminum‐based chip using citrate ethanolamine as precursors. Subsequently, utilizing technology, the CDs/PBAT composite films fluorescence were situ reaction. Interestingly, compared pure PBAT membranes, membranes exhibit tensile strength of 4.31 MPa, representing remarkable increase 3.24 times, elongation at break 491%, indicating improvement 1.62 times. More importantly, it had demonstrated that incorporation CDs into can achieve flame‐retardant effects. We firmly believe strategy could open up new idea for synthesis point out direction meaningful fabrication high property.

Language: Английский

Citations

0

微塑料介导的土壤碳循环:微塑料对土壤有机碳的形成,矿化和稳定过程的影响 DOI

Jia SHI,

Xiang WANG,

Jie WANG

et al.

Scientia Sinica Technologica, Journal Year: 2024, Volume and Issue: 54(10), P. 1854 - 1867

Published: April 24, 2024

微塑料污染已成为全球生态系统最严重的威胁之一,其不仅对陆地和海洋生态系统、生物多样性和人体健康产生影响,还会通过影响土壤有机碳固定扰动全球气候。土壤中微塑料可以直接参与碳循环或间接影响理化性质和微生物群落来影响土壤有机碳周转过程。本文从微塑料影响土壤有机碳测定,以及微塑料介导的有机碳形成过程、矿化和稳定过程等方面,阐明了微塑料对土壤有机碳库的影响,并深入探讨了微塑料调控土壤有机碳循环的可能机制。未来需从微塑料源碳的精准识别、碳过程关键微生物作用机制、多因素影响下碳循环过程等方面开展进一步的研究工作。

Citations

0