Response of soil dissolved organic matter to microplastic addition in Chinese loess soil

doi:10.1016/j.chemosphere.2017.07.064

	Response of soil dissolved organic matter to microplastic addition in Chinese loess soil
	Liu, Hongfei 1,3; Yang, Xiaomei 1,4,6; Liu, Guobin 1,2; Liang, Chutao 1,2; Xue, Sha 1,2; Chen, Hao 4; Ritsema, Coen J.4; Geissen, Violette 4,5
刊名	CHEMOSPHERE
	2017-10-01
卷号	185 页码:907-917
关键词	Microplastic Dissolved organic carbon (DOC) Dissolved organic nitrogen (DON) Dissolved organic phosphorus (DOP) Excitation-emission matrix (EEM)
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2017.07.064
通讯作者	Xue, Sha(xuesha100@163.com)
英文摘要	Plastic debris is accumulating in agricultural land due to the increased use of plastic mulches, which is causing serious environmental problems, especially for biochemical and physical properties of the soil. Dissolved organic matter (DOM) plays a central role in driving soil biogeochemistry, but little information is available on the effects of plastic residues, especially microplastic, on soil DOM. We conducted a soil-incubation experiment in a climate-controlled chamber with three levels of microplastic added to loess soil collected from the Loess Plateau in China: 0% (control, CK), 7% (M1) and 28% (M2) (w/w). We analysed the soil contents of dissolved organic carbon (DOC), dissolved organic nitrogen (DON), NH4+, NOT, dissolved organic phosphorus (DOP), and PO43- and the activities of fluorescein diacetate hydrolase (FDAse) and phenol oxidase. The higher level of microplastic addition significantly increased the nutrient contents of the DOM solution. The lower level of addition had no significant effect on the DOM solution during the first seven days, but the rate of DOM decomposition decreased in M1 between days 7 and 30, which increased the nutrient contents. The microplastic facilitated the accumulation of high-molecular weight humic-like material between days 7 and 30. The DOM solutions were mainly comprised of high molecular-weight humic-like material in CK and Ml and of high-molecular-weight humic-like material and tyrosine-like material in M2. The Microplastic stimulated the activities of both enzymes. Microplastic addition thus stimulated enzymatic activity, activated pools of organic C, N, and P, and was beneficial for the accumulation of dissolved organic C, N and P. (C) 2017 Elsevier Ltd. All rights reserved.
资助项目	Natural Science Foundation of China[41371510] ; West Young Scholars Project of the Chinese Academy of Sciences[XAB2015A05] ; EU Horizon 2020 project[ISQAPER: 635750]
WOS关键词	MICROBIAL COMMUNITY COMPOSITION ; ATMOSPHERIC NITRATE DEPOSITION ; ENZYME-ACTIVITIES ; PLASTIC FILM ; FLUORESCENCE SPECTROSCOPY ; CHEMICAL CHARACTERISTICS ; BACTERIAL COMMUNITIES ; LUMBRICUS-TERRESTRIS ; MARINE-ENVIRONMENT ; EXOENZYME ACTIVITY
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000408597300103
资助机构	Natural Science Foundation of China ; West Young Scholars Project of the Chinese Academy of Sciences ; EU Horizon 2020 project
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/61875]
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.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Peoples R China 3.Northwest A&F Univ, Coll Forestry, Yangling 712100, Shaanxi, Peoples R China 4.Wageningen Univ, Soil Phys & Land Management, POB 47, NL-6700 AA Wageningen, Netherlands 5.Univ Bonn, Inst Crop Sci & Resources Conservat INRES, D-53115 Bonn, Germany 6.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Liu, Hongfei,Yang, Xiaomei,Liu, Guobin,et al. Response of soil dissolved organic matter to microplastic addition in Chinese loess soil[J]. CHEMOSPHERE,2017,185:907-917.
APA	Liu, Hongfei.,Yang, Xiaomei.,Liu, Guobin.,Liang, Chutao.,Xue, Sha.,...&Geissen, Violette.(2017).Response of soil dissolved organic matter to microplastic addition in Chinese loess soil.CHEMOSPHERE,185,907-917.
MLA	Liu, Hongfei,et al."Response of soil dissolved organic matter to microplastic addition in Chinese loess soil".CHEMOSPHERE 185(2017):907-917.