KMS Institute of soil and water conservation Chinese Academy of Sciences
| Nitrogen addition increases the contents of glomalin-related soil protein and soil organic carbon but retains aggregate stability in a Pinus tabulaeformis forest | |
| Lipeng Sun1; Hang Jing1; Guoliang Wang1,2; Guobin Liu1,2; Liu, GB (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China.; Liu, GB (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China.; Liu, GB (reprint author), Minist Water Resources, 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: Glomalin-related soil protein (GRSP) and soil organic carbon (SOC) contribute to the formation and stability of soil aggregates, but the mechanism by which global atmospheric nitrogen (N) deposition changes soil aggregate stability by altering the distribution of GRSP and SOC in different aggregate fractions remains unknown. Methods: We used a gradient N addition (0-9 g N m(-2) y(-1) ) in Pinus tabulaeformis forest for two years in northeast China and then examined the changes in SOC contents, total GRSP (T-GRSP), and easily extractable GRSP (EE-GRSP) contents in three soil aggregate fractions (macro-aggregate: >250 mu m, micro-aggregate: 250-53 mu m, and fine material: <53 mu m) and their relationship with aggregate stability. Results: (1) The soil was dominated by macro-aggregates. Short term N addition had no significant effect on mean weight diameter (MWD) and geometric mean diameter (GMD). (2) GRSP varied among aggregate fractions, and N addition had different effects on the distribution of GRSP in aggregate fractions. The EE-GRSP content in the macro-aggregates increased initially and then decreased with increasing N addition levels, having a peak value of 0.480 mg g(-1) at 6 g N m(-2)y(-1) The micro-aggregates had the lowest EE-GRSP content (0.148 mg g(-1) ) at 6 g N m(-2)y(-1) . Furthermore, the T-GRSP content significantly increased in the aggregate fractions with the N addition levels. (3) The macro-aggregate had the highest SOC content, followed by the micro-aggregate and the fine material had the lowest SOC content. N addition significantly increased the SOC content in all the aggregate fractions. (4) GRSP and SOC contents were not significantly correlated with MWD. Conclusion: Glomalin-related soil protein and SOC contents increased by N addition, but this increase did not enhance aggregate stability in short term, and the improvement of stability might depend on binding agents and incubation time. |
| 关键词 | Aggregate Mean Weight Diameter Glomalin-related Soil Protein Soil Organic Carbon Nitrogen Deposition |
| 学科领域 | Science & Technology - Other Topics |
| DOI | 10.7717/peerj.5039 |
| 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:000436338600007 |
| 出版者 | PEERJ INC |
| 项目资助者 | National Natural Science Foundation of China [41671513] ; National Natural Science Foundation of China [41671513] ; National Key Research and Development Program of China [2017YFC0504601] ; National Key Research and Development Program of China [2017YFC0504601] |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | sbir.nwafu.edu.cn/handle/361005/8228 |
| 专题 | 水保所科研产出--SCI_2018--SCI |
| 通讯作者 | Liu, GB (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China.; Liu, GB (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China.; Liu, GB (reprint author), Minist Water Resources, Yangling, Shaanxi, Peoples R China. |
| 作者单位 | 1.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China 3.Minist Water Resources, Yangling, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lipeng Sun,Hang Jing,Guoliang Wang,et al. Nitrogen addition increases the contents of glomalin-related soil protein and soil organic carbon but retains aggregate stability in a Pinus tabulaeformis forest[J]. PEERJ,2018,6. |
| APA | Lipeng Sun.,Hang Jing.,Guoliang Wang.,Guobin Liu.,Liu, GB .,...&Liu, GB .(2018).Nitrogen addition increases the contents of glomalin-related soil protein and soil organic carbon but retains aggregate stability in a Pinus tabulaeformis forest.PEERJ,6. |
| MLA | Lipeng Sun,et al."Nitrogen addition increases the contents of glomalin-related soil protein and soil organic carbon but retains aggregate stability in a Pinus tabulaeformis forest".PEERJ 6(2018). |
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