您好，欢迎访问中国热带农业科学院 机构知识库！
中国热带农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Effect of biodegradable PBAT microplastics on the C and N accumulation of functional organic pools in tropical latosol

文献类型： 外文期刊

作者： Chen, Miao 1 ; Cao, Ming 4 ; Zhang, Wen 1 ; Chen, Xin 1 ; Liu, Huiran 1 ; Ning, Ziyu 1 ; Peng, Licheng 3 ; Fan, Changhua 1 ; Wu, Dongming 1 ; Zhang, Meng 5 ; Li, Qinfen 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Environm & Plant Protect Inst, Key Lab Low carbon Green Agr Trop Reg China, Hainan Key Lab Trop Ecocircular Agr,Minist Agr & R, Haikou 571101, Peoples R China

2.Hainan Danzhou Trop Agroecosyst Natl Observat & Re, Danzhou 571737, Peoples R China

3.Hainan Univ, Sch Ecol & Environm, Haikou 570228, Hainan, Peoples R China

4.Agrotech Extens & Serv Ctr Sanya, Sanya 572000, Hainan, Peoples R China

5.Beihang Univ, Sch Elect & Informat Engn, Beijing 100191, Peoples R China

6.4 Xueyue Rd, Haikou 571101, Hainan, Peoples R China

关键词： Particulate organic matter; Mineral-associated organic matter; Carbon and nitrogen cycling; Microbial community; Enzyme activity

期刊名称：ENVIRONMENT INTERNATIONAL （ 影响因子：11.8； 五年影响因子：12.4 ）

ISSN： 0160-4120

年卷期： 2024 年 183 卷

页码：

收录情况： SCI

摘要： Microplastics (MPs) pollution is becoming an emerging global stressor for soil ecosystems. However, studies on the impacts of biodegradable MPs on soil C sequestration have been mainly based on bulk C quantity, without considering the storage form of C, its persistency and N demand. To address this issue, the common poly (butylene adipate-co-terephthalate) (PBAT) was used as the model, and its effects on soil functional organic pools, including mineral -associated (MAOM), particulate (POM) and dissolved organic matter (DOM), were investigated from the novel coupled perspective of C and N stocks. After adding PBAT-MPs, the contents of soil POM-C, DOM-C, and MAOM-C were increased by 546.9 %-697.8 %, 54.2 %-90.3 %, and 13.7 %-18.9 %, respectively. Accordingly, the total C increased by 116.0 %-191.1 %. Structural equation modeling showed that soil C pools were regulated by PBAT input and microbial metabolism associated with C and N enzymes. Specifically, PBAT debris could be disguised as soil C to promote POM formation, which was the main pathway for C accumulation. Inversely, the MAOM-C and DOM-C formation was attributed to the PBAT microbial product and the selective consumption in DOM-N. Random forest model confirmed that N -activated (e.g., Nitrospirae) and PBAT-degrading bacteria (e.g., Gemmatinadetes) were important taxa for soil C accumulation, and the key enzymes were rhizopus oryzae lipas, invertase, and ammonia monooxygenase. The soil N accumulation was mainly related to the oligotrophic taxa (e.g., Chloroflexi and Ascomycota) associated with aggregate formation, decreasing the DOM-N by 46.9 %-84.3 %, but did not significantly change the total N storage and other N pools. Collectively, the findings highlight the urgency to control the nutrient imbalance risk of labile N loss and recalcitrant C enrichment in POM to avoid the depressed turnover rate of organic matter in MPs -polluted soil.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国热带农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台