Soil freeze-thaw cycles and qualitative change in fungal community

土壤冻融循环与真菌群落质变

• 批准号: 146310273
• 负责人: Professor Dr. Jürgen Kreyling
• 金额: --
• 依托单位: Institut für Waldbau und Waldschutz
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/146310273?language=en
• 关键词: Soil; freeze; thaw; cycles; qualitative

Ongoing global warming is expected to increase the recurrence of soil freeze-thaw cycles (FTC) in cool-temperate and other high-latitude regions due to decreases in snow cover and increased variability of air temperature in winter. FTC currently occur in more than half of the land surface of the northern hemisphere, therefore it is important to explore the ecological implications of their altered regimes due to climate change. Knowledge of FTC effects on fungal communities is scarce, although their importance as mycorrhizal symbionts as well as pathogens for plants is evident. Strong changes in productivity and competition of plant communities after FTC may potentially be triggered by changes in the functional composition of the fungal community. Within this project, we want to analyze the effects of intensified FTC in winter on the qualitative composition of fungal communities associated with the plants. We use existing samples from the EVENT-experiment and apply for financing of an ITS-sequence analysis.

由于冬季积雪减少和气温变异性增加，预计持续的全球变暖将增加寒温带和其他高纬度地区土壤冻融循环（FTC）的重现。目前，北半球一半以上的陆地表面出现了FTC，因此，探索气候变化导致的它们的制度改变对生态的影响非常重要。关于FTC对真菌群落的影响的知识很少，尽管它们作为菌根共生体和植物病原体的重要性是显而易见的。真菌群落功能组成的变化可能会引发FTC后植物群落生产力和竞争的强烈变化。在本项目中，我们希望分析冬季强化的FTC对与植物相关的真菌群落的定性组成的影响。我们使用来自event -实验的现有样本，并申请资助its序列分析。