The effects of nitrogen addition on soil organic carbon decomposition and microbial C-degradation functional genes abundance in a Pinus tabulaeformis forest
文献类型：期刊论文
| 作者 | Jing, Hang2; Li, Jingjing1,2; Yan, Benshuai3; Wei, Furong2; Wang, Guoliang2,3; Liu, Guobin2,3 |
| 刊名 | FOREST ECOLOGY AND MANAGEMENT
 |
| 出版日期 | 2021-06-01 |
| 卷号 | 489页码:11 |
| ISSN号 | 0378-1127 |
| 关键词 | Nitrogen addition C-cycling functional genes SOC-degrading enzyme activity Soil CO2 emission Soil organic carbon decomposition |
| DOI | 10.1016/j.foreco.2021.119098 |
| 通讯作者 | Wang, Guoliang(glwang@nwsuaf.edu.cn) |
| 英文摘要 | Nitrogen (N) deposition affects soil organic carbon (SOC) decomposition, therefore altering the global terrestrial carbon (C) cycle. However, it remains unclear how N deposition affects SOC decomposition by regulating microbial community composition and function, especially C-cycling functional gene composition. We investigated the effects of N addition (0, 3, 6, and 9 g N m(-2) y(-1)) on the composition of soil microbial C-cycling functional gene, SOC-degrading enzyme activities, and CO2 emissions in a Pinus tabulaeformis forest. Under low N addition (3 or 6 g N m(-2) y(-1)), labile C-degradation gene abundances were significantly increased. Under high N addition (9 g N m(-2) y(-1)), C-cycling functional gene abundance and diversity were significantly decreased. These effects were related to the changes in soil NO3--N, dissolved organic C, total N, and microbial biomass C contents. Furthermore, low N addition stimulated the activities of SOC-degrading enzyme and CO2 emissions, whereas high N addition had the inhibitory effect. C-degradation gene abundances were significantly correlated with the SOC-degrading enzyme activities and CO2 emissions. Increase in CO2 emission rates were related to the high microbial functional potentials for labile C degradation under low N addition, whereas the lower CO2 emission rates were related to the low microbial functional potentials for labile as well as recalcitrant C degradation under high N addition. Our study indicated that N deposition may change SOC decomposition by altering the abundance of labile C and recalcitrant C degradation genes. |
| 资助项目 | National Natural Science Foundation of China[41671513] ; National Key Research and Development Program of China[2017YFC0504601] |
| WOS研究方向 | Forestry |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000636266800004 |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/161882]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Guoliang |
| 作者单位 | 1.Minist Water Resources, Upper & Middle Yellow River Bur, Yellow River Conservancy Commiss, Xian 710021, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jing, Hang,Li, Jingjing,Yan, Benshuai,et al. The effects of nitrogen addition on soil organic carbon decomposition and microbial C-degradation functional genes abundance in a Pinus tabulaeformis forest[J]. FOREST ECOLOGY AND MANAGEMENT,2021,489:11. |
| APA | Jing, Hang,Li, Jingjing,Yan, Benshuai,Wei, Furong,Wang, Guoliang,&Liu, Guobin.(2021).The effects of nitrogen addition on soil organic carbon decomposition and microbial C-degradation functional genes abundance in a Pinus tabulaeformis forest.FOREST ECOLOGY AND MANAGEMENT,489,11. |
| MLA | Jing, Hang,et al."The effects of nitrogen addition on soil organic carbon decomposition and microbial C-degradation functional genes abundance in a Pinus tabulaeformis forest".FOREST ECOLOGY AND MANAGEMENT 489(2021):11. |
入库方式： OAI收割
来源：地理科学与资源研究所
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