国家生态安全屏障建设是维系我国生态、粮食与水资源安全，保障工农业生产和新型城镇化建设，实现“绿水青山就是金山银山”关键所在。由于强烈的人为与自然干扰及生态工程本身存在的诸多问题，林草生态系统结构失衡、调节能力下降、屏障功能退化，对我国生态安全和经济发展与脱贫致富造成了严重威胁，成为限制区域可持续发展的瓶颈。如何维系生态安全屏障功能高效、稳定与可持续是国家面临的重大需求。本次报告将从森林培育-建造-评估理论与技术体系等讲述演讲者对国家生态安全屏障建设的思考，主要内容包括：森林演化史就是人类文明发展史；筑牢北方生态安全屏障(三北工程)；夯实国家生态安全根基(天保工程)。

塑料污染已成为环境破坏的元凶之一。数据显示，1950到2015年间全球累计生产83亿吨塑料，仅有不到9%被回收，其余63亿吨或被焚烧或散落自然。焚烧释放的二氧化碳加剧温室效应，而遗弃的塑料逐渐裂解为微塑料——它们不仅入侵海洋，更飘散在空气和土壤中，威胁整个生态系统。尽管改进塑料材质等方案不断涌现，我们团队认为需要更彻底的解决之道。我们的突破口是超分子聚合物这一前沿概念。2024年底，我们成功研发了基于盐桥离子单体对的"超分子塑料"。这种创新材料在自然环境中遇盐即分解为单体，可被微生物完全降解，从根源上杜绝微塑料产生。令人惊喜的是，它的坚固程度丝毫不逊于传统塑料。最新进展中，我们利用双电层聚合技术，制造出仿丝瓜结构的超轻网状薄膜，助力可持续发展。 One of the major issues causing environmental destruction is plastic waste. Between the years 1950 and 2015, we produced 8.3 billion tons of plastic, yet less than 9% was recycled. 6.3 billion tons became waste, either incinerated or discarded into the natural environment. When burned, plastic emits carbon dioxide, which accelerates global warming. When discarded, plastic degrades into microplastics, which spread not only in the oceans but also in the air and soil, harming ecosystems—including humans. While many strategies, such as improving plastic materials, have been explored to address the plastic waste problem, we believe a fundamentally new strategy is necessary. We focused attention on the concept of supramolecular polymers, which I have tightly committed from the beginning. At the end of November 2024, we reported supramolecular plastics, as a strategic extension of the concept of supramolecular polymers using salt-bridge-forming ionic monomer pairs. This new class of polymeric materials disassembles into monomers when exposed to salts in the natural environment and is then metabolized by microorganisms. Unlike conventional plastics, supramolecular plastics do not generate microplastics. Despite their eco-friendly characteristics, these plastic materials possess mechanical properties that are comparable or even better than those of conventional plastics. More recently, we have reported a loofah sponge-like, lightweight reticular membrane by using an electric double-layer as the polymerization medium, which also contributes to the realization of a sustainable future.

人工智能正在迈向全新的“体验时代”。从早期的复杂游戏（如围棋、Dota2）到近期的大模型推理中取得里程碑式的突破，强化学习已经证明了其作为实现通用智能核心路径之一的巨大潜力。它标志着AI研究范式的根本性转变——从依赖静态、被动的数据集进学习，转向让智能体在动态、交互的“体验”中通过试错进行规划与决策。本次讲座将探讨先进强化学习的前沿思想与技术挑战，探讨如何突破范式，实现通用人工智能的宏伟目标。 Artificial intelligence is entering a new "era of experience." From early complex games like Go and Dota 2 to recent milestone breakthroughs in reasoning with large models, reinforcement learning has demonstrated its immense potential as one of the core pathways toward achieving general intelligence. It signifies a fundamental shift in AI research paradigms—moving from learning reliant on static, passive datasets to enabling intelligent agents to plan and make decisions through trial and error in dynamic, interactive "experiences." This lecture will explore the cutting-edge ideas and technical challenges in advanced reinforcement learning, delving into how to break through existing paradigms and achieve the grand goal of artificial general intelligence.

材料学一直面临着体系复杂度高、数据标准化程度低、研究链条长等问题，人工智能（AI）技术擅长处理高维度、多尺度数据，能够发掘参数之间的复杂关联，为解决材料学研究目前的困境提供了可能。在本报告中，我们提出了“数据-模型-算力”深度融合、“数据+知识”双驱动、“端到端”的材料研发三种范式。我们相信，AI能够帮助科研人员获得跨领域的知识和思维、释放创新潜能，成为覆盖材料基础研究到产品化全流程的有效工具，为材料学研究带来一个快速发展的全新未来。

本报告试图通过数、形、变化、数学的智慧、观念与信念等主题讲述数学的一些思想和自己对数学的一些思考。

报告从力学科学与实践的若干突出范例的讲解出发，展现出力学在推动工程科学前沿进展及解决重大工程问题中的关键作用。主要内容包括：20世纪力学十大成就回顾；深空及超大型材料结构的可能灾变；热障涂层体系的热冲击灾变断裂；深海纤维复合材料结构的失稳；先进材料结构的极限强度设计原理及方法；EB-PVD热障涂层的接触失稳；深地巷道失稳的复合结构防护分析；总结及展望。