Nitrogen Addition Altered the Effect of Belowground C Allocation on Soil Respiration in a Subtropical Forest
文献类型：期刊论文
| 作者 | He, Tongxin1,2; Wang, Qingkui1,3; Wang, Silong1,3; Zhang, Fangyue1,2 |
| 刊名 | PLOS ONE
 |
| 出版日期 | 2016-05-23 |
| 卷号 | 11期号:5 |
| ISSN号 | 1932-6203 |
| DOI | 10.1371/journal.pone.0155881 |
| 英文摘要 | The availabilities of carbon (C) and nitrogen (N) in soil play an important role in soil carbon dioxide (CO2) emission. However, the variation in the soil respiration (R-s) and response of microbial community to the combined changes in belowground C and N inputs in forest ecosystems are not yet fully understood. Stem girdling and N addition were performed in this study to evaluate the effects of C supply and N availability on R-s and soil microbial community in a subtropical forest. The trees were girdled on 1 July 2012. R-s was monitored from July 2012 to November 2013, and soil microbial community composition was also examined by phospholipid fatty acids (PLFAs) 1 year after girdling. Results showed that R-s decreased by 40.5% with girdling alone, but N addition only did not change R-s. Interestingly, R-s decreased by 62.7% under the girdling with N addition treatment. The reducing effect of girdling and N addition on R-s differed between dormant and growing seasons. Girdling alone reduced R-s by 33.9% in the dormant season and 54.8% in the growing season compared with the control. By contrast, girdling with N addition decreased R-s by 59.5% in the dormant season and 65.4% in the growing season. Girdling and N addition significantly decreased the total and bacterial PLFAs. Moreover, the effect of N addition was greater than girdling. Both girdling and N addition treatments separated the microbial groups on the basis of the first principal component through principal component analysis compared with control. This indicated that girdling and N addition changed the soil microbial community composition. However, the effect of girdling with N addition treatment separated the microbial groups on the basis of the second principal component compared to N addition treatment, which suggested N addition altered the effect of girdling on soil microbial community composition. These results suggest that the increase in soil N availability by N deposition alters the effect of belowground C allocation on the decomposition of soil organic matter by altering the composition of the soil microbial community. |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000376880200027 |
| 出版者 | PUBLIC LIBRARY SCIENCE |
| 源URL | [http://210.72.129.5/handle/321005/122695]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Wang, Qingkui |
| 作者单位 | 1.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Huitong Natl Res Stn Forest Ecosyst, Huitong, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Tongxin,Wang, Qingkui,Wang, Silong,et al. Nitrogen Addition Altered the Effect of Belowground C Allocation on Soil Respiration in a Subtropical Forest[J]. PLOS ONE,2016,11(5). |
| APA | He, Tongxin,Wang, Qingkui,Wang, Silong,&Zhang, Fangyue.(2016).Nitrogen Addition Altered the Effect of Belowground C Allocation on Soil Respiration in a Subtropical Forest.PLOS ONE,11(5). |
| MLA | He, Tongxin,et al."Nitrogen Addition Altered the Effect of Belowground C Allocation on Soil Respiration in a Subtropical Forest".PLOS ONE 11.5(2016). |
入库方式： OAI收割
来源：沈阳应用生态研究所
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