Plateau pika disturbance indirectly controls the temperature sensitivity of microbial respiration through soil organic carbon quality in alpine grasslands
文献类型：期刊论文
| 作者 | Luo, Chong Liang; Duan, Hai Xia; Liu, Hong Jin; Qu, Jia Peng; Xu, Shi Xiao; Zhao, Xin Quan |
| 刊名 | APPLIED SOIL ECOLOGY
 |
| 出版日期 | 2024 |
| 卷号 | 204 |
| 英文摘要 | Understanding the spatial variations in the temperature sensitivity (Q10) of soil microbial respiration is crucial for predicting the carbon cycle-climate feedbacks in the context of global warming. However, the response of Q10 to soil heterogeneity, particularly that caused by bioturbation, and the underlying regulatory mechanisms remain poorly understood. In this study, a paired design experiment was conducted across 9 sites with varying disturbance gradients within alpine grasslands to compare plant and soil properties, soil respiration, and Q10 values between pika-disturbed and pika-undisturbed areas. To accurately assess the levels of pika disturbance, we developed a multivariate index by applying principal component analysis to reduce the dimensionality of variables related to pika disturbance. Our results showed that low disturbance exhibited a significant positive effect on plant species richness and soil microbial respiration (RH). Conversely, high disturbance significantly reduced plant vegetation cover, aboveground biomass, diversity, as well as soil water content, bulk density, pH, SOC, the ratio of SOC to total nitrogen, microbial biomass carbon and nitrogen, RH, and SOC quality. The Q10 value increased significantly with escalating pika disturbance gradients and displayed a rising trend from meadow to steppe grassland. Plateau pika disturbance indirectly influenced Q10 through SOC quality in pika-disturbed grasslands, whereas SOC quality regulated Q10 via soil microbial respiration in pika-undisturbed areas. Overall, our findings emphasize the importance of considering the impacts of pika disturbance, soil substrate quality and availability on the Q10 in degraded alpine grasslands under future warming scenarios. |
| 源URL | [http://210.75.249.4/handle/363003/61913]  |
| 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 | Luo, Chong Liang,Duan, Hai Xia,Liu, Hong Jin,et al. Plateau pika disturbance indirectly controls the temperature sensitivity of microbial respiration through soil organic carbon quality in alpine grasslands[J]. APPLIED SOIL ECOLOGY,2024,204. |
| APA | Luo, Chong Liang,Duan, Hai Xia,Liu, Hong Jin,Qu, Jia Peng,Xu, Shi Xiao,&Zhao, Xin Quan.(2024).Plateau pika disturbance indirectly controls the temperature sensitivity of microbial respiration through soil organic carbon quality in alpine grasslands.APPLIED SOIL ECOLOGY,204. |
| MLA | Luo, Chong Liang,et al."Plateau pika disturbance indirectly controls the temperature sensitivity of microbial respiration through soil organic carbon quality in alpine grasslands".APPLIED SOIL ECOLOGY 204(2024). |
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。