KMS Institute of soil and water conservation Chinese Academy of Sciences
| Effects of long-term fertilisation on aggregates and dynamics of soil organic carbon in a semi-arid agro-ecosystem in China | |
| Jiaoyang Zhang1,3; Caili Sun2; Guobin Liu1,2; Sha Xue1,2; 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. | |
| 文章类型 | Article |
| 2018 | |
| 发表期刊 | PEERJ
 |
| ISSN | 2167-8359 |
| 通讯作者邮箱 | gbliu@ms.iswc.ac.cn |
| 卷号 | 6 |
| 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. |
| 关键词 | Long-term Fertilization Path Analysis Aggregate Volume Fractal Dimension The Loess Plateau |
| 学科领域 | Science & Technology - Other Topics |
| DOI | 10.7717/peerj.4758 |
| 收录类别 | SCI |
| 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 |
| 项目资助者 | 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] |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | sbir.nwafu.edu.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.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing, 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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