Temperature sensitivity of soil enzyme kinetics under N and P fertilization in an alpine grassland, China
文献类型：期刊论文
| 作者 | Wu, Yang1; Zhou, HuaKun2,3; Sun, Wei1; Zhao, QiFan1; Liang, Meng1; Chen, WenJing1; Guo, ZiQi1; Jiang, YaoKun4; Jiang, Yue5; Liu, GuoBin1,4 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022-09-10 |
| 卷号 | 838页码:9 |
| ISSN号 | 0048-9697 |
| 关键词 | Temperature sensitivity N and P fertilizers Michaelis-Menten equation Activation energy Qinghai -Tibetan Plateau |
| DOI | 10.1016/j.scitotenv.2022.156042 |
| 通讯作者 | Xue, Sha(xuesha100@163.com) |
| 英文摘要 | Soil nutrient cycling can be best studied by supplementing the soil with N and P fertilizers. Soil enzyme kinetic parameters (Vmax and Km) can be used to reflect the maximum reaction rates and affinities of soil enzymes. However, how N and P fertilizers affect the temperature sensitivity of soil enzyme kinetics is poorly understood. Therefore, our study investigated the response of soil enzyme kinetic temperature sensitivity relevant to C, N, and P cycles based on a 9 year fertilization (N and P) experiment performed in an alpine grassland on the Qinghai-Tibetan Plateau in China. Our results showed the following: N and P addition positively affected the Km of beta-glucosidase (BG); P and NP interaction significantly increased the Km of phosphatase (AP), indicating that N and P addition significantly negatively affected the substrate affinity of soil enzymes. The temperature sensitivity of Michaelis-Menten kinetics was different for different enzymes. N and P fertilization decreased the temperature sensitivity of Km of BG but increased the temperature sensitivity of the Km of N-acetyl-glucosaminidase (NAG) and AP. In our study, P and NP fertilization increased the temperature sensitivity and activation energy of the Vmax of BG, indicating that P elements promoted the secretion of more extracellular enzymes by soil microbes to cope with temperature changes. The enzymes involved in the soil N and P cycle responded to the exogenous N and P through increases and decreases in the temperature sensitivity of the Km and Vmax, respectively. This study is crucial for investigating the impact of nutrient input on soil ecosystem functions under future climate warming conditions. |
| WOS关键词 | ECOENZYMATIC STOICHIOMETRY ; TERRESTRIAL ECOSYSTEMS ; MICROBIAL BIOMASS ; NITROGEN ADDITION ; CARBON ; LIMITATION ; DECOMPOSITION ; RESPIRATION ; RESPONSES ; SHIFTS |
| 资助项目 | Qinghai innovation platform construction project by the Chinese Academy of Sciences[2022-ZJ-Y02] ; Joint Re-search Project of Three-River-Resource National Park - Chinese Academy of Sciences and Qinghai Provincial People's Government[LHZX-2020-08] ; Science Fund for Distinguished Young Scholars Shaanxi Province, China[2021JC-50] ; Qinghai Provincial Key Laboratory of Restoration Ecology in Cold Regions, Northwest Institute of Plateau Biology[2020-KF-04] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000812212900009 |
| 资助机构 | Qinghai innovation platform construction project by the Chinese Academy of Sciences ; Joint Re-search Project of Three-River-Resource National Park - Chinese Academy of Sciences and Qinghai Provincial People's Government ; Science Fund for Distinguished Young Scholars Shaanxi Province, China ; Qinghai Provincial Key Laboratory of Restoration Ecology in Cold Regions, Northwest Institute of Plateau Biology |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/180853]  |
| 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 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Prov Key Lab Restorat Ecol Cold Reg, Xining 810000, Peoples R China 3.Qinghai Univ, State Key Lab Plateau Ecol & Agr, Xining 810000, Peoples R China 4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 5.Northwest A&F Univ, Coll Econ & Management, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Yang,Zhou, HuaKun,Sun, Wei,et al. Temperature sensitivity of soil enzyme kinetics under N and P fertilization in an alpine grassland, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,838:9. |
| APA | Wu, Yang.,Zhou, HuaKun.,Sun, Wei.,Zhao, QiFan.,Liang, Meng.,...&Xue, Sha.(2022).Temperature sensitivity of soil enzyme kinetics under N and P fertilization in an alpine grassland, China.SCIENCE OF THE TOTAL ENVIRONMENT,838,9. |
| MLA | Wu, Yang,et al."Temperature sensitivity of soil enzyme kinetics under N and P fertilization in an alpine grassland, China".SCIENCE OF THE TOTAL ENVIRONMENT 838(2022):9. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。