微生物碳利用效率与阿尔卑斯山草原土壤有机碳之间的形关系
Yuting Wang1, Yongneng Wei2, Gangsheng Wang1,3
1State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, Centre for Grassland Microbiome, Lanzhou University, Lanzhou, Gansu, 730020, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|November 25, 2025
概括
高山土壤中的微生物碳利用效率 (CUE) 与土壤有机碳 (SOC) 有着复杂的关系. 了解CUE驱动因素是维持这些敏感生态系统中碳储存的关键.
科学领域:
- 土壤科学 土壤科学
- 微生物生态学 微生物生态学
- 生态系统生态学生态学
背景情况:
- 微生物碳利用效率 (CUE) 对土壤有机碳 (SOC) 周转至关重要.
- 在阿尔卑斯山草原中,CUE的驱动因素和碳稳定作用尚不清楚.
研究的目的:
- 研究微生物CUE和SOC动态之间的关系.
- 确定影响高山草原土壤CUE的关键驱动因素.
- 确定CUE在碳稳定机制中的作用.
主要方法:
- 利用了来自青海-西藏高原45个地点的数据.
- 采用O-水跟踪用于基质独立的CUE分析.
- 分析了CUE,SOC,降水,植物生物质,营养素和土壤特性之间的关系.
主要成果:
- 在微生物CUE和SOC之间观察到一个形的关系.
- 在SOC值 (54 g C kg-1) 下,降水量,生物质,和与CUE正相关.
- 在SOC值以上,限制和高粘土含量抑制了CUE,特别是在潮湿的条件下.
结论:
- 微生物CUE影响矿物相关有机碳 (MAOC) 的形成,特别是在含含量较高的土壤中.
- 在富含碳的土壤中,CUE表示封存潜力,而不是实际积累.
- 平衡土壤碳和营养物质的可用性对于保持对气候敏感的高山生态系统中的碳储存至关重要.
相关概念视频
Green Algae
689
Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
689
The Roles of Bacteria and Fungi in Plant Nutrition
46.5K
Plants have the impressive ability to create their own food through photosynthesis. However, plants often require assistance from organisms in the soil to acquire the nutrients they need to function correctly. Both bacteria and fungi have evolved symbiotic relationships with plants that help the species to thrive in a wide variety of environments.
46.5K
Trophic Efficiency
24.9K
Trophic level transfer efficiency (TLTE) is a measure of the total energy transfer from one trophic level to the next. Due to extensive energy loss as metabolic heat, an average of only 10% of the original energy obtained is passed on to the next level. This pattern of energy loss severely limits the possible number of trophic levels in a food chain.
24.9K
The Soil Ecosystem
24.4K
Plants obtain inorganic minerals and water from the soil, which acts as a natural medium for land plants. The composition and quality of soil depend not only on the chemical constituents but also on the presence of living organisms. In general, soils contain three major components:
24.4K
Microbial Nutrition
1.0K
Organisms exhibit remarkable metabolic diversity, categorized based on how they acquire energy and carbon. These strategies enable survival in various ecological niches and are essential for maintaining energy flow and nutrient cycling within ecosystems.Energy and Carbon SourcesOrganisms are classified as phototrophs or chemotrophs based on energy acquisition. Phototrophs use light as their energy source, while chemotrophs rely on oxidizing chemical compounds. Further differentiation arises...
1.0K
Carbon-dioxide Fixation
602
Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...
602


