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  

Soil carbon cycling mediated by microplastics:Formation,mineralization,and sequestration

作　　者：石佳 王祥 汪杰 SHI Jia;WANG Xiang;WANG Jie(College of Land Science and Technology,China Agricultural University,Beijing 100193,China;College of Resources and Environmental Sciences,China Agricultural University,Beijing 100193,China)

机构地区：[1]中国农业大学土地科学与技术学院,北京100193 [2]中国农业大学资源与环境学院,北京100193

出　　处：《中国科学：技术科学》2024年第10期1854-1867,共14页Scientia Sinica(Technologica)

基　　金：国家自然科学基金(批准号:42377381)资助项目。

摘　　要：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变化.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.Microplastic pollution has emerged as one of the most pressing threats to global ecosystems,exerting adverse effects on terrestrial and marine ecosystems,biodiversity,and human health.Furthermore,microplastic contamination in terrestrial ecosystems poses a risk of destabilizing significant soil carbon stocks,which is crucial for mitigating climate change.Microplastics present in soil can directly participate in the carbon cycle or indirectly impact the physicochemical properties and microbial communities,thereby affecting the soil organic carbon process.This article elucidates the effects of microplastics on soil organic carbon pools through their impacts on the determination of soil organic carbon and their role in the formation,mineralization,and sequestration of organic carbon mediated by microplastics.The potential in-depth mechanisms were explored.Further studies are needed on the precise identification of microplastic source carbon,elucidation of the key microbial mechanisms involved in carbon processes,and examination of the carbon cycle process under the influence of multiple factors.

关 键 词：微塑料 有机碳 土壤微生物群落 塑料际 微生物残体碳 

分 类 号：S153.6[农业科学—土壤学] X144[农业科学—农业基础科学]