时间：02月28日（周一）

参加方式：腾讯会议

点击链接入会，或添加至会议列表：

https://meeting.tencent.com/dm/E0PQ2x9d3y5Y

会议ID：305-418-973

讲坛日程：

报告人介绍：

原作强

个人简介：

原作强，博士，研究员，博士生导师。2006年本科毕业于东北师范大学城市与环境学院，2011年在中科院沈阳应用生态研究所获得博士学位，并留所工作至今。主要研究方向为森林生态学、生物多样性与生态系统功能，曾荣获中科院青促会会员、辽宁省 “百千万人才工程”、第三批国家林草局青年拔尖人才、辽宁省自然科学二等奖。现担任《The Innovation》期刊青年编委、《广西植物》编委、《Forests》期刊编委。目前以第一/通讯作者在Global Change Biology, Ecology、Journal of Ecology等期刊上发表论文21篇，出版译著1部，授权专利2 项。

报告题目：

基于固定样地的温带森林生物多样性与生态系统功能关系研究。

报告摘要：

近30年来, 生态学家开始对于生物多样性的持续丧失是否以及如何影响生态系统功能的问题越来越感兴趣，生物多样性与生态系统功能关系的研究应运而生，并成为生态学研究的热点之一。长期森林固定监测样地不仅可以提供详细的物种组成、结构（起测径级1cm）和非生物因子信息（地形和土壤），还可以准确反映森林地上生产力变化（5年一次复查）特征，以及有利于同时整合多个生态功能，是开展生物多样性与生态系统功能关系研究的理想平台。报告人基于长白山温带森林监测网络数据，从植物多样性与生产力简单二元变量关系拟合到探究多元变量之间复杂多维网络联系，分析了天然林生态系统中物种数量、物种质量、物种间亲缘关系、以及生物与环境相互作用等如何影响森林生产力及其稳定性，进而揭示地上-地下生物多样性如何影响森林多重功能，旨在为温带典型森林碳汇现状、固碳速率与维持机制研究提供有益参考。

Tommaso Jucker

个人简介：

Tommaso Jucker is a NERC Independent Research Fellow and Lecturer in the School of Biological Sciences at the University of Bristol (UK). His research is broadly focused on understanding the processes that shape the structure and function of the world's forests, in an effort to predict how these will respond to rapid environmental change. He and his group do this using everything from manipulative experiments, long-term field observations and remote sensing. Tommaso obtained his BSc in Ecology (2009) from the University of Roma Tor Vergata (Italy), before completing an MSc in Ecology, Evolution and Conservation (2010) at Imperial College London (UK). It was around this time that Tommaso first became seriously interested in plant ecology and decided to pursue a PhD (2015) at the University of Cambridge (UK) working with Prof. David Coomes. During his time in Cambridge, first as a PhD student and then as a postdoctoral researcher, he worked on a range of projects with a focus on forest productivity and dynamics that set him on the research path he is on today. Before joining the University of Bristol, Tommaso was a Research Scientist at Australia's Commonwealth Scientific and Industrial Research (CSIRO), based in Perth in the Ecosystem Change Ecology team. For more information on Tommaso and his research group visit https://www.selvalab.org.

报告题目：

Global drivers of tree crown architecture.

报告摘要：

Tree species can differ enormously in their crown architectural blueprints, such as the scaling relationships that link their height and crown size to their stem diameter. However, despite the importance of this variation for shaping the structure and function of forest ecosystems, we continue to miss a complete picture of what drivers underpin this incredible diversity in crown architecture. Here we use data from >500,000 trees to show that climate, competition, functional traits, and evolutionary history all play a role in constraining the height, crown width and shape of the world’s trees. We found that variation in size-standardized tree heights across nearly 2,000 species is primarily driven by a combination of aridity and tree density, while crown width correlates with functional traits related to mechanical stability and photosynthesis. Additionally, several plant lineages have crown architectures that seemingly defy the environments they inhabit, such as the exceedingly tall and slender eucalypts and dipterocarps, or the extremely wide crowns of savanna species in Africa and the Americas. Overall, our study provides a framework for categorising tree species into architectural types and predicting how emergent properties of forest ecosystems – such as their 3D structure – are likely to change in a warming world.