Seasonal N2O emissions respond differently to environmental and microbial factors after fertilization in wheat-maize agroecosystem
文献类型：期刊论文
| 作者 | Zhixin Dong1,2; Bo Zhu1,2; Yan Jiang3; Jialiang Tang1,2; Wenli Liu1; Lei Hu1,2; Tang, Jialiang ; Dong, Zhixin; Zhu, Bo
|
| 刊名 | NUTRIENT CYCLING IN AGROECOSYSTEMS
 |
| 出版日期 | 2018 |
| 卷号 | 112期号:2页码:215-229 |
| 关键词 | Microbial functional gene N2O emission Long-term fertilization Partial least squares path modeling (PLS-PM) |
| ISSN号 | 1385-1314 |
| DOI | 10.1007/s10705-018-9940-8 |
| 产权排序 | 1 |
| 英文摘要 | Biogeochemical processes regulating cropland soil nitrous oxide (N2O) emissions are complex, and the controlling factors need to be better understood, especially for seasonal variation after fertilization. Seasonal patterns of N2O emissions and abundances of archaeal ammonia monooxygenase (amoA), bacterial amoA, nitrate reductase (narG), nitrite reductase (nirS/nirK), and nitrous oxide reductase (nosZ) genes in long-term fertilized wheat-maize soils have been studied to understand the roles of microbes in N2O emissions. The results showed that fertilization greatly stimulated N2O emission with higher values in pig manure-treated soil (OM, 2.88kgNha(-1)year(-1)) than in straw-returned (CRNPK, 0.79kgNha(-1)year(-1)) and mineral fertilizer-treated (NPK, 0.90kgNha(-1)year(-1)) soils. Most (52.2-88.9%) cumulative N2O emissions occurred within 3weeks after fertilization. Meanwhile, N2O emissions within 3weeks after fertilization showed a positive correlation with narG gene copy number and a negative correlation with soil NO3- contents. The abundances of narG and nosZ genes had larger direct effects (1.06) than ammonium oxidizers (0.42) on N2O emissions according to partial least squares path modeling. Stepwise multiple regression also showed that log narG was a predictor variable for N2O emissions. This study suggested that denitrification was the major process responsible for N2O emissions within 3weeks after fertilization. During the remaining period of crop growth, insufficient N substrate and low temperature became the primary limiting factors for N2O emission according to the results of the regression models. |
| 电子版国际标准刊号 | 1573-0867 |
| 语种 | 英语 |
| WOS记录号 | WOS:000447978800005 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/24220]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 通讯作者 | Bo Zhu; Zhu, Bo |
| 作者单位 | 1.Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences, No9, Section 4 of Renmin Nan Road, Chengdu 610041, China; 2.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China; 3.Agricultural College of Shihezi University, Shihezi 832003, Xinjiang, China |
| 推荐引用方式 GB/T 7714 | Zhixin Dong,Bo Zhu,Yan Jiang,et al. Seasonal N2O emissions respond differently to environmental and microbial factors after fertilization in wheat-maize agroecosystem[J]. NUTRIENT CYCLING IN AGROECOSYSTEMS,2018,112(2):215-229. |
| APA | Zhixin Dong.,Bo Zhu.,Yan Jiang.,Jialiang Tang.,Wenli Liu.,...&Zhu, Bo.(2018).Seasonal N2O emissions respond differently to environmental and microbial factors after fertilization in wheat-maize agroecosystem.NUTRIENT CYCLING IN AGROECOSYSTEMS,112(2),215-229. |
| MLA | Zhixin Dong,et al."Seasonal N2O emissions respond differently to environmental and microbial factors after fertilization in wheat-maize agroecosystem".NUTRIENT CYCLING IN AGROECOSYSTEMS 112.2(2018):215-229. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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。