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Interactive effects of microplastics and glyphosate on the dynamics of soil dissolved organic matter in a Chinese loess soil

文献类型：期刊论文

作者Liu, Hongfei4,5; Yang, Xiaomei2,4; Liang, Chutao4,5; Li, Yuanze3,4; Qiao, Leilei4,5; Ai, Zemin4; Xue, Sha1,5; Liu, Guobin4,5
刊名CATENA
出版日期2019-11-01
卷号182页码:11
关键词Glyphosate Dissolved organic carbon (DOC) Dissolved organic nitrogen (DON) Dissolved organic phosphorus (DOP) Excitation-emission matrix (EEM)
ISSN号0341-8162
DOI10.1016/j.catena.2019.104177
通讯作者Xue, Sha(xuesha100@163.com)
英文摘要The increased use of plastic films and pesticides on agricultural soil leads to the accumulation of plastic debris and pesticide residues in soil. This accumulation has become a serious environmental issue, as it threatens life of earthworms, inhibits the enzyme activities and microbial diversity, and contributes to the loss of soil microbial carbon and nitrogen. However, little information is available regarding the effects of pesticides on soil dissolved organic matter (DOM). It is also unknown how plastic debris, especially small-sized particles called micro plastics, influences the effects of pesticides on soil DOM. In this study, we performed a 30-day soil incubation experiment. Three levels of the common herbicide glyphosate were applied to soil: 0 (control, CK), 3.6 kg ha(-1) (G1) and 7.2 kg ha(-1) (G2). We also tested four levels of glyphosate and microplastics (homopolymer polypropylene powder) co-addition: 3.6 kg ha(-1) + 7% (w/w) (M1G1), 3.6 kg ha(-1)+ 28% (w/w) (M2G1), 7.2 kg ha(-1) + 7% (w/w) (M1G2), and 7.2 kg ha(-1)+ 28% (w/w) (M2G2). Glyphosate addition slightly increased soil fluorescein diacetate hydrolase (FDAse) and phenol oxidase (PO) activities. Although the glyphosate addition significantly promoted the accumulation of dissolved organic phosphorus (DOP) within the first 14 days, the M2 treatment decreased DOP at day 30. M2G1 and M2G2 increased soil FDAse activity and promoted the accumulation of DOC and DOP relative to G1 and G2 respectively while M1G1 and M1G2 benefited DON accumulation. Our results highlighted that the interaction between glyphosate and low microplastics content negatively affected DOC and DOP dynamics, leading to the loss of bioavailable C and P loss. The interaction between glyphosate and high content microplastics negatively affected DON compared with glyphosate addition, possibly decreasing DON.
WOS关键词AMINOMETHYLPHOSPHONIC ACID ; SURFACE WATERS ; FLUORESCENCE SPECTROSCOPY ; BACTERIAL COMMUNITIES ; HERBICIDE GLYPHOSATE ; EXOENZYME ACTIVITY ; MICROBIAL BIOMASS ; HUMIC SUBSTANCES ; ENZYME-ACTIVITY ; FIELD SOIL
资助项目National Natural Science Foundation of China[41877072] ; Fund Project of Shaanxi Key Laboratory of Land Consolidation[2019-JC15] ; Fundamental Research Funds for the Central Universities[2452017236] ; Young Scholars of the Chinese Academy of Sciences[XAB2015A05]
WOS研究方向Geology ; Agriculture ; Water Resources
语种英语
WOS记录号WOS:000482493700063
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; Fund Project of Shaanxi Key Laboratory of Land Consolidation ; Fundamental Research Funds for the Central Universities ; Young Scholars of the Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/69685]  
专题中国科学院地理科学与资源研究所
通讯作者Xue, Sha
作者单位1.Changan Univ, Shaanxi Key Lab Land Consolidat, Xian 710000, Shaanxi, Peoples R China
2.Wageningen Univ, Soil Phys & Land Management, POB 47, NL-6700 AA Wageningen, Netherlands
3.Northwest A&F Univ, Coll Forestry, Yangling 712100, Shaanxi, Peoples R China
4.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
5.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Hongfei,Yang, Xiaomei,Liang, Chutao,et al. Interactive effects of microplastics and glyphosate on the dynamics of soil dissolved organic matter in a Chinese loess soil[J]. CATENA,2019,182:11.
APA Liu, Hongfei.,Yang, Xiaomei.,Liang, Chutao.,Li, Yuanze.,Qiao, Leilei.,...&Liu, Guobin.(2019).Interactive effects of microplastics and glyphosate on the dynamics of soil dissolved organic matter in a Chinese loess soil.CATENA,182,11.
MLA Liu, Hongfei,et al."Interactive effects of microplastics and glyphosate on the dynamics of soil dissolved organic matter in a Chinese loess soil".CATENA 182(2019):11.

入库方式： OAI收割

来源：地理科学与资源研究所

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