Microbial community responses reduce soil carbon loss in Tibetan alpine grasslands under short-term warming
文献类型：期刊论文
| 作者 | Li, Yaoming; Lv, Wangwang; Jiang, Lili; Zhang, Lirong; Wang, Shiping ; Wang, Qi; Xue, Kai; Li, Bowen; Liu, Peipei; Hong, Huan
|
| 刊名 | GLOBAL CHANGE BIOLOGY
 |
| 出版日期 | 2019 |
| 卷号 | 25期号:10 |
| 关键词 | labile carbon limitation microbial community response soil heterotrophic respiration soil incubation soil respiration acclimation |
| 英文摘要 | Changes in labile carbon (LC) pools and microbial communities are the primary factors controlling soil heterotrophic respiration (R-h) in warming experiments. Warming is expected to initially increase R-h but studies show this increase may not be continuous or sustained. Specifically, LC and soil microbiome have been shown to contribute to the effect of extended warming on R-h. However, their relative contribution is unclear and this gap in knowledge causes considerable uncertainty in the prediction of carbon cycle feedbacks to climate change. In this study, we used a two-step incubation approach to reveal the relative contribution of LC limitation and soil microbial community responses in attenuating the effect that extended warming has on R-h. Soil samples from three Tibetan ecosystems-an alpine meadow (AM), alpine steppe (AS), and desert steppe (DS)-were exposed to a temperature gradient of 5-25 degrees C. After an initial incubation period, soils were processed in one of two methods: (a) soils were sterilized then inoculated with parent soil microbes to assess the LC limitation effects, while controlling for microbial community responses; or (b) soil microbes from the incubations were used to inoculate sterilized parent soils to assess the microbial community effects, while controlling for LC limitation. We found both LC limitation and microbial community responses led to significant declines in R-h by 37% and 30%, respectively, but their relative contributions were ecosystem specific. LC limitation alone caused a greater R-h decrease for DS soils than AMs or ASs. Our study demonstrates that soil carbon loss due to R-h in Tibetan alpine soils-especially in copiotrophic soils-will be weakened by microbial community responses under short-term warming. |
| 源URL | [http://210.75.249.4/handle/363003/59730]  |
| 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 | Li, Yaoming,Lv, Wangwang,Jiang, Lili,et al. Microbial community responses reduce soil carbon loss in Tibetan alpine grasslands under short-term warming[J]. GLOBAL CHANGE BIOLOGY,2019,25(10). |
| APA | Li, Yaoming.,Lv, Wangwang.,Jiang, Lili.,Zhang, Lirong.,Wang, Shiping.,...&Wang, Yanfen.(2019).Microbial community responses reduce soil carbon loss in Tibetan alpine grasslands under short-term warming.GLOBAL CHANGE BIOLOGY,25(10). |
| MLA | Li, Yaoming,et al."Microbial community responses reduce soil carbon loss in Tibetan alpine grasslands under short-term warming".GLOBAL CHANGE BIOLOGY 25.10(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。