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Effects of long-term fertilisation on aggregates and dynamics of soil organic carbon in a semi-arid agro-ecosystem in China

文献类型：期刊论文

作者Jiaoyang Zhang1,2; Caili Sun3; Guobin Liu2,3; Sha Xue2,3; Liu, GB (reprint author), Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China.; Liu, GB (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China.
刊名PEERJ
出版日期2018
卷号6
关键词Long-term Fertilization Path Analysis Aggregate Volume Fractal Dimension The Loess Plateau
ISSN号2167-8359
DOI10.7717/peerj.4758
文献子类Article
英文摘要Background. Long-term fertilisation has a large influence on soil physical and chemical properties in agro-ecosystems. The effects on the distribution of aggregates, however, are not fully understood. We determined the dynamic change of the distribution of aggregates and soil organic carbon (SOC) content over time in a long-term field experiment established in 1998 on the Loess Plateau of China and illustrated the relationship between them. Methods. We determined SOC content and the distribution of aggregates in nine fertiliser treatments: manure (M); nitrogen (N); phosphorus (P); M and N; M, N, and P; M and P; N and P; bare land; and an unfertilised control. These parameters were then used for a path analysis and to analyse the fractal dimension (D-v). Results. The organic fertiliser increased SOC content. The proportions of 0.1-0.25 mm microaggregates and 0.25-0.5 mm macroaggregates were higher and the proportion of the 0.01-0.05 mm size class of the silt + clay fraction was lower in the treatments receiving organic fertiliser (M, MN, MNP, and MP) than that in the control, indicating that the addition of organic fertiliser promoted aggregation. The distribution of aggregates characterised by their fractal dimension (D-v), however, did not differ among the treatments. Discussion. D-v was strongly correlated with the proportion of the <0.002 mm size class of the silt + clay fraction that did not differ significantly among the treatments. The change in the distribution of aggregates was strongly correlated with SOC content, which could produce organic polymer binding agents to increase the proportion of larger particles. Long-term application of organic fertiliser is thus necessary for the improvement and maintenance of soil quality in semi-arid agricultural land when residues are removed.
学科主题Science & Technology - Other Topics
出版地341-345 OLD ST, THIRD FLR, LONDON, EC1V 9LL, ENGLAND
语种英语
WOS记录号WOS:000434229400002
出版者PEERJ INC
资助机构National Key Research and Development Program of China [2016YFC0501707] ; National Key Research and Development Program of China [2016YFC0501707] ; National Key Technology RD Program [2015BAC01B03] ; National Key Technology RD Program [2015BAC01B03] ; West Young Scholars Project of The Chinese Academy of Sciences [XAB2015A05] ; West Young Scholars Project of The Chinese Academy of Sciences [XAB2015A05] ; National Key Research and Development Program of China [2016YFC0501707] ; National Key Research and Development Program of China [2016YFC0501707] ; National Key Technology RD Program [2015BAC01B03] ; National Key Technology RD Program [2015BAC01B03] ; West Young Scholars Project of The Chinese Academy of Sciences [XAB2015A05] ; West Young Scholars Project of The Chinese Academy of Sciences [XAB2015A05]
源URL[http://ir.iswc.ac.cn/handle/361005/8252]  
专题水保所科研产出--SCI_2018--SCI
通讯作者Liu, GB (reprint author), Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China.; Liu, GB (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China.
作者单位1.Univ Chinese Acad Sci, Beijing, Peoples R China
2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China
3.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Jiaoyang Zhang,Caili Sun,Guobin Liu,et al. Effects of long-term fertilisation on aggregates and dynamics of soil organic carbon in a semi-arid agro-ecosystem in China[J]. PEERJ,2018,6.
APA Jiaoyang Zhang,Caili Sun,Guobin Liu,Sha Xue,Liu, GB ,&Liu, GB .(2018).Effects of long-term fertilisation on aggregates and dynamics of soil organic carbon in a semi-arid agro-ecosystem in China.PEERJ,6.
MLA Jiaoyang Zhang,et al."Effects of long-term fertilisation on aggregates and dynamics of soil organic carbon in a semi-arid agro-ecosystem in China".PEERJ 6(2018).

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来源：水土保持研究所

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