Effects of long-term nitrogen & phosphorus fertilization on soil microbial, bacterial and fungi respiration and their temperature sensitivity on the Qinghai-Tibet Plateau
文献类型：期刊论文
| 作者 | Chen, Kelu1; Zhou, Huakun2,3; Wu, Yang1; Zhao, Ziwen1; Li, Yuanze1; Qiao, Leilei4,5; Liu, Guobin1,4; Xue, Sha1,3,4 |
| 刊名 | PEERJ
 |
| 出版日期 | 2022-02-24 |
| 卷号 | 10页码:16 |
| 关键词 | SOC decomposition Fertilization SOC quality Tibetan Plateau |
| ISSN号 | 2167-8359 |
| DOI | 10.7717/peerj.12851 |
| 通讯作者 | Xue, Sha(xuesha100@163.com) |
| 英文摘要 | Background. The microbial decomposition of soil organic carbon (SOC) is a major source of carbon loss, especially in ecologically fragile regions (e.g., the Tibetan Plateau), which are also affected by global warming and anthropogenic activities (e.g., fertilization). The inherent differences between bacteria and fungi indicate that they are likely to play distinct roles in the above processes. However, there still have been no reports on that, which is restricting our knowledge about the mechanisms underlying SOC decomposition. Methods. A long-term nitrogen (N) and phosphorus (P) addition field experiment was conducted to assess their effects on soil microbial, fungal, and bacterial respiration (RM, RF, and RB, respectively) and temperature sensitivity (Q10; at 15 degrees C, 25 degrees C, and 35 degrees C) using cycloheximide and streptomycin to inhibit the growth of fungi and bacteria. Results. We found that N suppressed RM and RF at all temperatures, but RB was only suppressed at 15 degrees C, regardless of the addition of P. The addition of N significantly decreased the ratio of RF/RM at 35 degrees C, and the combined NP treatment increased the Q10 of RB but not that of RF. Results of the redundancy analysis showed that variations in soil respiration were linked with NO3--N formation, while the variations in Q10 were linked with SOC complexity. Long-term N addition suppressed RM by the formation of NO3--N, and this was mediated by fungi rather than bacteria. The contribution of fungi toward SOC decomposition was weakened by N addition and increasing temperatures. Combined NP addition increased the Q10 of RB due to increased SOC complexity. The present study emphasizes the importance of fungi and the soil environment in SOC decomposition. It also highlights that the role of bacteria and SOC quality will be important in the future due to global warming and increasing N deposition. |
| WOS关键词 | ORGANIC-MATTER DECOMPOSITION ; CARBON MINERALIZATION ; ALPINE GRASSLAND ; GROWTH ; ADDITIONS ; INCREASES ; BIOMASS ; STABILITY ; RESPONSES ; TURNOVER |
| 资助项目 | National Natural Science Foundation of China[U21A20186] ; Science Foundation for Distinguished Youth of Shaanxi Province[2021JC-50] ; Joint Research Project of Three-RiverResource National Park of the Chinese Academy of Sciences[LHZX-2020-08] ; Qinghai Provincial People's Government and Qinghai Provincial Key Laboratory of Restoration Ecology in Cold Regions, Northwest Institute of Plateau Biology[2020-KF04] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000766803900004 |
| 出版者 | PEERJ INC |
| 资助机构 | National Natural Science Foundation of China ; Science Foundation for Distinguished Youth of Shaanxi Province ; Joint Research Project of Three-RiverResource National Park of the Chinese Academy of Sciences ; Qinghai Provincial People's Government and Qinghai Provincial Key Laboratory of Restoration Ecology in Cold Regions, Northwest Institute of Plateau Biology |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/171992]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xue, Sha |
| 作者单位 | 1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China 2.Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Prov Key Lab Restorat Ecol Cold Reg, Xining, Peoples R China 3.Qinghai Univ, Xining, Peoples R China 4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China 5.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Kelu,Zhou, Huakun,Wu, Yang,et al. Effects of long-term nitrogen & phosphorus fertilization on soil microbial, bacterial and fungi respiration and their temperature sensitivity on the Qinghai-Tibet Plateau[J]. PEERJ,2022,10:16. |
| APA | Chen, Kelu.,Zhou, Huakun.,Wu, Yang.,Zhao, Ziwen.,Li, Yuanze.,...&Xue, Sha.(2022).Effects of long-term nitrogen & phosphorus fertilization on soil microbial, bacterial and fungi respiration and their temperature sensitivity on the Qinghai-Tibet Plateau.PEERJ,10,16. |
| MLA | Chen, Kelu,et al."Effects of long-term nitrogen & phosphorus fertilization on soil microbial, bacterial and fungi respiration and their temperature sensitivity on the Qinghai-Tibet Plateau".PEERJ 10(2022):16. |
入库方式： OAI收割
来源：地理科学与资源研究所
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