Data from: The microbially-mediated soil organic carbon loss under degenerative succession in an alpine meadow
| Main Authors: | Zhang, Yuguang, Liu, Xiao, Cong, Jing, Lu, Hui, Sheng, Yuyu, Wang, Xiulei, Li, Diqiang, Liu, Xueduan, Yin, Huaqun, Zhou, Jizhong, Deng, Ye |
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| Format: | info dataset Journal |
| Terbitan: |
, 2017
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/5022087 |
Daftar Isi:
- Land-cover change has long been recognized as having marked effect on the amount of soil organic carbon (SOC). However, the microbially-mediated processes and mechanisms on SOC are still unclear. In this study, the soil samples in a degenerative succession from alpine meadow to alpine steppe meadow in the Qinghai-Tibetan Plateau were analyzed using high-throughput technologies, including Illumina sequencing and GeoChip functional gene arrays. The soil microbial community structure and diversity were significantly (P < 0.05) different between alpine meadow and alpine steppe meadow, the microbial ɑ-diversity in alpine steppe meadow was significantly (P < 0.01) higher than in alpine meadow. Molecular ecological network analysis indicated that the microbial community structure in alpine steppe meadow was more complex and tighter than in the alpine meadow. The relative abundance of soil microbial labile carbon degradation genes (e.g., pectin and hemicellulose) was significantly higher in alpine steppe meadow than in alpine meadow, but the relative abundance of soil recalcitrant carbon degradation genes (e.g. chitin and lignin) showed the opposite tendency. The Biolog Ecoplate experiment showed that microbially-mediated soil carbon utilization was more active in alpine steppe meadow than in alpine meadow. Consequently, more soil labile carbon might be decomposed in alpine steppe meadow than in alpine meadow. Therefore, the degenerative succession of alpine meadow because of climate change or anthropogenic activities would most likely decreased SOC and nutrients medicated by changing soil microbial community structure and their functional potentials for carbon decomposition.
- Microbial community and network of meadow alpine soil by Illumina sequencingThe Qinghai-Tibet Plateau is the highest and the largest low-latitude plateau in the world, and also it is an extremely sensitive region to the impact of global warming and environmental changes. The alpine meadow, widely distributed on the Tibetan Plateau, occupies over 40% of the Qinghai-Tibetan Plateau area and plays a critical role in regional sustainable development, biodiversity and water resource conservation. The alpine meadow also was a large soil organic-carbon pool.In recently decades, succession and degradation were gradually occurring between different alpine meadow types, such as alpine meadow might appear in the alpine steppe meadow region according to years of field investigation which could be the consequences of the climate warming and anthropogenic activities. The aims of our study were to determine the effect of degenerated succession from alpine meadow (AM) to alpine steppe meadow (ASM) on soil organic carbon and soil microbial community structure.The archived files included one OTU table generated from the 16S rRNA gene sequencing data, as well as the input and output files for the network analyses.Dryad data deposit.7z