Soil Microbial Responses to Experimental Warming and Nitrogen Addition in a Temperate Steppe of Northern China
文献类型：SCI/SSCI论文
| 作者 | Xu M. |
| 发表日期 | 2014 |
| 关键词 | arbuscular mycorrhizal fungi global warming Gram-negative bacteria nitrogen enrichment microbial biomass microbial community arbuscular mycorrhizal fungi climate-change community structure grassland soils atmospheric co2 n availability inner-mongolia organic-carbon critical loads trace gases |
| 英文摘要 | The responses of soil microbes to global warming and nitrogen enrichment can profoundly affect terrestrial ecosystem functions and the ecosystem feedbacks to climate change. However, the interactive effect of warming and nitrogen enrichment on soil microbial community is unclear. In this study, individual and interactive effects of experimental warming and nitrogen addition on the soil microbial community were investigated in a long-term field experiment in a temperate steppe of northern China. The field experiment started in 2006 and soils were sampled in 2010 and analyzed for phospholipid fatty acids to characterize the soil microbial communities. Some soil chemical properties were also determined. Five-year experimental warming significantly increased soil total microbial biomass and the proportion of Gram-negative bacteria in the soils. Long-term nitrogen addition decreased soil microbial biomass at the 0-10 cm soil depth and the relative abundance of arbuscular mycorrhizal fungi in the soils. Little interactive effect on soil microbes was detected when experimental warming and nitrogen addition were combined. Soil microbial biomass positively correlated with soil total C and N, but basically did not relate to the soil C/N ratio and pH. Our results suggest that future global warming or nitrogen enrichment may significantly change the soil microbial communities in the temperate steppes in northern China. |
| 出处 | Pedosphere |
| 卷 | 24 |
| 期 | 4 |
| 页 | 427-436 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1002-0160 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/29626]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Xu M.. Soil Microbial Responses to Experimental Warming and Nitrogen Addition in a Temperate Steppe of Northern China. 2014. |
入库方式： OAI收割
来源：地理科学与资源研究所
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