Nitrous oxide emissions from tea garden soil following the addition of urea and rapeseed cake

doi:10.1007/s11368-020-02641-z

	Nitrous oxide emissions from tea garden soil following the addition of urea and rapeseed cake
	Yu, Jialuo 1,2; Lin, Shan 3; Shaaban, Muhammad 4; Ju, Wenliang 1,2; Fang, Linchuan 1,5
刊名	JOURNAL OF SOILS AND SEDIMENTS
	2020-05-25
页码	10
关键词	Microbial biomass carbon N2O emissions Rapeseed cake Urea Tea garden ecosystem
ISSN号	1439-0108
DOI	10.1007/s11368-020-02641-z
通讯作者	Fang, Linchuan(flinc629@hotmail.com)
英文摘要	Purpose Tea gardens, being a key agroecosystem type, are an important source of nitrous oxide (N2O) emissions. However, main factors that regulate N2O emissions following urea and organic matter amendments have yet to be clarified. Materials and methods To investigate the influence of different fertilization management measures on N2O emissions in tea garden soil, a 50-day laboratory incubation experiment was conducted. Five treatments were designed for this experiment: control (CK), urea (U), rapeseed cake (R), urea + rapeseed cake (2:1, UR1), and urea + rapeseed cake (1:2, UR2). Results and discussion N2O emission flux in the R treatment peaked at 14.12 mu g kg(-1) h(-1) on day 19, which occurred later than the UR1, UR2, and U treatments. Cumulative N2O emissions from the R and UR2 treatments were 6073 and 4296 mu g kg(-1), respectively, which were greater by a factor of 11.2 and 7.9, respectively, compared to the U treatment. Moreover, N2O emissions of the UR1 and UR2 treatments were significantly lower than the R treatment. Additionally, N2O emissions were also significantly positively correlated to pH levels and microbial biomass carbon (MBC) content. MBC content had the most direct and greatest influence on soil N2O emissions, indicating that MBC could be the key limiting factor for N2O emissions in this experiment. Conclusions A single application of rapeseed cake caused an increase in N2O emissions, whereas the combined application of rapeseed cake and a synthetic N fertilizer (urea) caused a decrease in N2O emissions. Results from this study offer potential strategies to mitigate soil N2O emissions from tea garden agroecosystems through improved field fertilization management.
资助项目	National Natural Science Foundation of China[41671406] ; National Natural Science Foundation of China[41571314] ; Chinese Academy of Sciences (CAS) Light of West China program[XAB2016A03] ; State Key Research & Development Project of China[2017YFD800102]
WOS关键词	N2O EMISSIONS ; AGRICULTURAL SOILS ; STRAW INCORPORATION ; MICROBIAL BIOMASS ; CROP ; RESIDUE ; CARBON ; DENITRIFICATION ; FERTILIZER ; FIELD
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000535419000002
资助机构	National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) Light of West China program ; State Key Research & Development Project of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/159622]
专题	中国科学院地理科学与资源研究所
通讯作者	Fang, Linchuan
作者单位	1.Chinese Acad Sci & Minist Water Resources, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Huazhong Agr Univ, Key Lab Amble Land Conservat Middle & Lower Reach, Minist Agr, Coll Resources & Environm, Wuhan 430070, Peoples R China 4.Bahauddin Zakariya Univ, Fac Agr Sci & Technol, Dept Soil Sci, Multan, Pakistan 5.Chinese Acad Sci, CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Yu, Jialuo,Lin, Shan,Shaaban, Muhammad,et al. Nitrous oxide emissions from tea garden soil following the addition of urea and rapeseed cake[J]. JOURNAL OF SOILS AND SEDIMENTS,2020:10.
APA	Yu, Jialuo,Lin, Shan,Shaaban, Muhammad,Ju, Wenliang,&Fang, Linchuan.(2020).Nitrous oxide emissions from tea garden soil following the addition of urea and rapeseed cake.JOURNAL OF SOILS AND SEDIMENTS,10.
MLA	Yu, Jialuo,et al."Nitrous oxide emissions from tea garden soil following the addition of urea and rapeseed cake".JOURNAL OF SOILS AND SEDIMENTS (2020):10.