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	Soil-specific effects of urea addition on mineralization of aromatic and proteinaceous components of humic-like substances in three agricultural soils
	Shan, Jun1,2; Ji, Rong3,4; Yan, Xiaoyuan1,2
刊名	BIOLOGY AND FERTILITY OF SOILS
	2015-07-01
卷号	51期号:5页码:615-623
关键词	C-14 Decomposition Transformation N addition Soil organic carbon
ISSN号	0178-2762
DOI	10.1007/s00374-015-1008-1
通讯作者	Yan, Xiaoyuan(yanxy@issas.ac.cn)
英文摘要	Humic substances (HS) are the most abundant components of soil organic carbon (SOC). Intensive use of inorganic N fertilizers in agricultural soils can alter stability and turnover of HS and hence C sequestration. Using specifically C-14-labeled humic-like substances (C-14 labeled in the aromatic or the proteinaceous component) as model HS, the effects of urea addition (0.1 and 0.2 mg N g(-1) soil) on mineralization and transformation of the aromatic and proteinaceous components of HS in three soil types (Anthrosols, Fluvisols, and Chernozems) were investigated. Our results showed that the urea addition had no effect on the mineralization of the aromatic and the proteinaceous components in the Anthrosol, whereas it significantly (P < 0.05) inhibited (13.1-17.7 %) the mineralization of the two components in the Fluvisol. Urea addition (0.2 mg N g(-1) soil) significantly (P < 0.05) stimulated the mineralization of the aromatic (8.1 %) and the proteinaceous (9.0 %) components in the Chernozem. The amounts of C-14 in dissolved organic matter (DOM) in the three tested soils were reduced after urea addition, probably because specific microbial species incorporating humic-like substances into DOM were inhibited by urea. The soil-specific humic-like substances mineralization after urea addition is consistent with the reported SOC change patterns of soil, indicating that the variable effects of urea addition on certain components of SOC could be partly responsible for changes in SOC contents induced by inorganic N fertilizers addition.
收录类别	SCI
WOS关键词	ORGANIC-MATTER ; NITROGEN-FERTILIZATION ; CARBON SEQUESTRATION ; ENZYME-ACTIVITY ; METAPHIRE-GUILLELMI ; NO-TILLAGE ; CHINA ; STABILIZATION ; DECOMPOSITION ; AMENDMENTS
WOS研究方向	Agriculture
WOS类目	Soil Science
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000355865200010
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2558397
专题	南京土壤研究所
通讯作者	Yan, Xiaoyuan
作者单位	1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Changshu Agroecol Expt Stn, Changshu 215555, Peoples R China 3.Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China 4.Nanjing Univ, Inst Climate & Global Change Res, Nanjing 210093, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Shan, Jun,Ji, Rong,Yan, Xiaoyuan. Soil-specific effects of urea addition on mineralization of aromatic and proteinaceous components of humic-like substances in three agricultural soils[J]. BIOLOGY AND FERTILITY OF SOILS,2015,51(5):615-623.
APA	Shan, Jun,Ji, Rong,&Yan, Xiaoyuan.(2015).Soil-specific effects of urea addition on mineralization of aromatic and proteinaceous components of humic-like substances in three agricultural soils.BIOLOGY AND FERTILITY OF SOILS,51(5),615-623.
MLA	Shan, Jun,et al."Soil-specific effects of urea addition on mineralization of aromatic and proteinaceous components of humic-like substances in three agricultural soils".BIOLOGY AND FERTILITY OF SOILS 51.5(2015):615-623.

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