Simulating warmer and drier climate increases root production but decreases root decomposition in an alpine grassland on the Tibetan plateau
文献类型：期刊论文
| 作者 | Liu, Huiying; Lin, Li; Wang, Hao; Zhang, Zhenhua ; Shangguan, Zijian; Feng, Xiaojuan; He, Jin-Sheng
|
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2020 |
| 关键词 | Global warming Precipitation Root dynamics Alpine ecosystems The Tibetan plateau |
| 英文摘要 | Background Future ecosystem structure and function will largely depend on root responses to climate change. However, few studies have explored the responses of root production and decomposition to simultaneous warming and altered precipitation in high-latitude and high-altitude ecosystems. Methods Using ingrowth core and root bag methods, we investigated root production and decomposition dynamics from 2013 to 2015 in a full-factorial warming (control, 1.5 similar to 1.8 degrees C warming) and precipitation (dry (-50% precipitation), ambient, and wet (+50% precipitation)) experiment established in 2011 in a Tibetan alpine grassland. Results Warming and precipitation effects on root production were independent. Dry plus warming treatments increased root production, while wet treatments did not significantly affect root production. In contrast, root decomposition accelerated along the increasing precipitation gradient. Warming tended to decrease root decomposition under dry treatments but did not affect root decomposition under wet treatments. The different responses of root production among the treatments were mainly driven by changes in soil moisture, whereas those of root decomposition were mainly due to the changes in the root carbon nitrogen ratio, soil microbial biomass and soil moisture. Conclusions Given that altered precipitation had contrasting effects on root production and decomposition, our findings indicate that root-derived carbon may accumulate in soils on the Tibetan Plateau where precipitation decreases but not in the areas with projected increasing precipitation under future warming. |
| 源URL | [http://210.75.249.4/handle/363003/60331]  |
| 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 | Liu, Huiying,Lin, Li,Wang, Hao,et al. Simulating warmer and drier climate increases root production but decreases root decomposition in an alpine grassland on the Tibetan plateau[J]. PLANT AND SOIL,2020. |
| APA | Liu, Huiying.,Lin, Li.,Wang, Hao.,Zhang, Zhenhua.,Shangguan, Zijian.,...&He, Jin-Sheng.(2020).Simulating warmer and drier climate increases root production but decreases root decomposition in an alpine grassland on the Tibetan plateau.PLANT AND SOIL. |
| MLA | Liu, Huiying,et al."Simulating warmer and drier climate increases root production but decreases root decomposition in an alpine grassland on the Tibetan plateau".PLANT AND SOIL (2020). |
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。