Moderate Grazing Promotes Grassland Nitrous Oxide Emission by Increasing Ammonia-Oxidizing Archaea Abundance on the Tibetan Plateau
文献类型：期刊论文
| 作者 | Du, Yangong; Shu, Kai; Guo, Xiaowei ; Zhu Pengjin
|
| 刊名 | CURRENT MICROBIOLOGY
 |
| 出版日期 | 2019 |
| 卷号 | 76期号:5 |
| 英文摘要 | Grasslands are suffering from long-term overgrazing because of the population inflation. Furthermore, nitrous oxide (N2O) is a major greenhouse gas that also depletes stratospheric ozone. However, the emission rate of grassland N2O and underlying mechanisms remained unclear under different grazing intensities. We conducted a field manipulation under four grazing intensities to compare its N2O fluxes and main affected factors. It was indicated that alpine meadow N2O emission rates increased from 39.7 +/- 3.1 to 47.8 +/- 2.3 mu g m(-2) h(-1) (p < 0.05), then decreased to 43.4 +/- 4.1 and 32.9 +/- 1.4 mu g m(-2) h(-1) with grazing intensity increasing from 4 to 8, 12 and 16 sheep ha-1, respectively. Multiple-stepwise regression analysis indicated that the predominant affected soil factors were separately TN and BD, pH and BD, also pH and BD, SOC and BD. Simple linear regression models revealed that ammonia-oxidizing archaea (AOA) contributed much to N2O emission (R-2 = 0.77). Additionally, the R-2 coefficient of linear regression was 0.87 between nosZ genes and N2O emission rates in alpine meadow. Much attention should be paid to protecting alpine meadow from degradation to mitigate N2O emission source on the Tibetan Plateau. |
| 源URL | [http://210.75.249.4/handle/363003/59805]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 推荐引用方式 GB/T 7714 | Du, Yangong,Shu, Kai,Guo, Xiaowei,et al. Moderate Grazing Promotes Grassland Nitrous Oxide Emission by Increasing Ammonia-Oxidizing Archaea Abundance on the Tibetan Plateau[J]. CURRENT MICROBIOLOGY,2019,76(5). |
| APA | Du, Yangong,Shu, Kai,Guo, Xiaowei,&Zhu Pengjin.(2019).Moderate Grazing Promotes Grassland Nitrous Oxide Emission by Increasing Ammonia-Oxidizing Archaea Abundance on the Tibetan Plateau.CURRENT MICROBIOLOGY,76(5). |
| MLA | Du, Yangong,et al."Moderate Grazing Promotes Grassland Nitrous Oxide Emission by Increasing Ammonia-Oxidizing Archaea Abundance on the Tibetan Plateau".CURRENT MICROBIOLOGY 76.5(2019). |
入库方式： OAI收割
来源：西北高原生物研究所
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。