时间：04月28日（周四）

参加方式：Zoom和腾讯会议

Zoom: https://zoom.us/j/91577513840?pwd=TTZZTTBaRlAxemRxWWt2ZEVhNnQ2dz09

Zoom ID：915 7751 3840 密码：438801

腾讯会议点击链接入会，或添加至会议列表：https://meeting.tencent.com/dm/fliazIwctzfH

腾讯会议 ID：162-608-517 

讲坛日程：

报告人介绍：

Grégoire T. Freschet

个人简介：

Grégoire T. Freschet is a senior scientist at the French National Centre for Scientific Research (CNRS) working on the dynamic relationships between plants and their environment. His research is based on a functional approach to ecology and addresses aspects of plant and ecosystem ecology from the organism to the global scale. It is structured around four thematic axes, (1) The diversity of plant strategies, (2) Plant plastic responses to the environment; (3) Plant effects on ecosystem functioning, and (4) Human impact on (agro-) ecosystem functioning. For more information on Gregoire and his research group visit https://sete-moulis-cnrs.fr/en/recherches/linking/equipe/item/167-freschet-gregoire.

报告题目：

Root traits as drivers of plant and ecosystem functioning

报告摘要：

The effects of plants on the biosphere, atmosphere and geosphere are key determinants of terrestrial ecosystem functioning. However, despite substantial progress made regarding plant belowground components, we are still only beginning to explore the complex relationships between root traits and functions. Drawing on the literature in plant physiology, ecophysiology, ecology, agronomy and soil science, we reviewed 24 aspects of plant and ecosystem functioning and their relationships with a number of root system traits, including aspects of architecture, physiology, morphology, anatomy, chemistry, biomechanics and biotic interactions. Based on this assessment, we critically evaluated the current strengths and gaps in our knowledge, and identify future research challenges in the field of root ecology. Most importantly, we found that belowground traits with the broadest importance in plant and ecosystem functioning are not those most commonly measured. Also, the estimation of trait relative importance for functioning requires us to consider a more comprehensive range of functionally relevant traits from a diverse range of species, across environments and over time series. We also advocate that establishing causal hierarchical links among root traits will provide a hypothesis-based framework to identify the most parsimonious sets of traits with the strongest links on functions, and to link genotypes to plant and ecosystem functioning.

朱彪

个人简介： 

朱彪，博士，北京大学城市与环境学院长聘副教授（研究员）。2002和2005年从北京大学分别获得学士和硕士学位，2010年从美国加州大学圣克鲁斯分校（UC Santa Cruz）获得博士学位。2010-2014年在美国从事博士后研究。长期从事全球变化下的根际生态和土壤碳过程研究，重点关注森林和草地生态系统的地下碳循环过程对全球变化的响应机制。相关论文发表在GCB、New Phytologist、SBB、植物生态学报等期刊上。担任Ecology、Journal of Ecology、SBB等期刊的副主编或编委。更多信息请登录https://www.ues.pku.edu.cn/szdw/qbjs/z/311959.htm。

报告题目：

根系生理性状、根际效应和土壤碳动态

报告摘要：

根系功能性状包括形态、化学、生理和生物学等多方面。最近的很多研究强调了根系功能性状与生态系统过程的关联，但是根系生理性状的研究相对薄弱，并且根系性状如何影响根际效应和土壤碳动态还不清楚。我们最近在这些方面开展了一些工作。首先，基于森林的实测研究和数据的整合分析，我们系统地研究了三个根系生理性状（呼吸速率、分泌物速率、磷酸酶活性）与其它性状的关系以及在根系经济空间中的位置。其次，结合树木幼苗的盆栽实验和野外大树的原位采样，我们研究了树木的菌根类型和根系性状与根际（激发）响应的相关性。另外，我们总结了植物根系对土壤有机碳的双刃剑作用，并提出了一个强调微生物周转和土壤理化基质的Rhizo-Engine Framework。最后，我们也希望借此报告（以及Freschet博士的报告），和国内（特别是CForBio）的同行们就森林细根根系的大尺度联网的合作研究做些初步探讨。