报告题目：Climate-adaptive agriculture through the promotion of specific soil microbiome characteristics
报告人：Samuel Bickel
报告时间：2025年8月6日（周三） 10:00--10:40
报告地点：研究生楼718会议室
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报告人简介：
Samuel Bickel，奥地利格拉茨大学土壤微生物专家，博士毕业于瑞士苏黎世联邦理工学院，主要从事生态系统过程与微生物活动的关联性研究。长期从事土壤孔隙内微生物群落空间分布和多样性变化及其与生态环境物理过程的互作效应研究，致力于研究土壤细菌在维持土壤功能和结构中的关键作用，提出细菌群落的空间分布主要影响土壤微生物组的整体功能。此外，长期关注干旱等水分胁迫对土壤细菌活动的影响，致力于开发新型土壤改良剂，调控土壤微生物群落，以增强其在农业生产中的应用价值。在Nature Communications，ISME Journal，Water Resources Research 等期刊发表论文30余篇。
报告摘要：
The exceptionally diverse soil microbiota plays a critical role in how soil responds to climate change and extreme weather conditions. These microbial communities are influenced by pedoclimatic factors and serve as a significant genetic reservoir that underpins soil functionality. Of particular interest is the turnover of soil microbial biomass and soil carbon, as humus formation is integral to key soil functions. An increased content of soil organic matter enhances several crucial properties, including soil water retention, water infiltration capacity, and structural stability; all of which are essential for mitigating pluvial flooding and soil erosion. Nevertheless, the specific bacterial characteristics that promote a humus, and soil structure formation, along with their ecological contexts, remain largely unexplored. Understanding how bacteria can enhance soil water balance, bolster resilience against extreme weather, and assist in nutrient retention to support the climate adaptation of agricultural practices is central to the objectives of the CARA project. Here, we present preliminary findings from controlled experiments utilizing a novel rainfall simulator designed to replicate the droplet sizes and velocities characteristic of various climate scenarios. We employ artificial soil columns with varying organic matter content to investigate how soil microbiota influences and adjusts soil structure, thereby affecting water infiltration and retention under current and prospective climate conditions. Additionally, we treat the soils with both animal- and plant-derived liquid fertilizers to explore how nutrients, microbiota, and their associated functionality can either establish or leach from the soil columns. Our results aim to shed light on the regulatory mechanisms of the soil microbiome in relation to climate-resilient agricultural practices and enhance our comprehension of the persistence and dispersal of bacterial genetic traits within the soil-water interface.
资源与环境学院
2025年8月1日
