生命史是一部生物界短期、快速剧变与长期、慢速稳定相互交替的历史。大绝灭（即集群绝灭）事件反映了全球环境的大突变，点断了地质历史中的生命记录及其发展历程，预示着生物界的演化出现了最有意义的飞跃。近年来尝试研究大绝灭后全球生物界的残存－复苏及其基本型式，并探索复苏的控制因素，标志着地质科学中一个重心的转移（即从大绝灭转向其后的生物残存与复苏的研究）。生物复苏揭示了大绝灭后生物演化历史的第一幕，其研究的重要意义远远超过人们的预想。这一热门的前沿领域需要进行高分辨率的年代地层学和科学的系统分类学研究，并从分析各种级别的分类单元入手，在深入研究居群生物学、群落生态学与生物地理学３个层次的基础上，阐明大绝灭后新生态系建立的背景、过程与特点。笔者强调以显生宙各大绝灭后复苏研究为依据，纵向对比历次大绝灭后生物残存与复苏的时限、型式、环境及其控制因素，是复苏研究中最重要的课题之一。以古生代３次大绝灭为例，初步探讨其后生物残存－复苏－辐射的基本特征。华南是全球古生代３次大绝灭后复苏研究最理想的地区之一；深入研讨华南的材料，将提供涉及全球范围的关键性的研究成果 Life history is a biological history of short-term, rapid evolution and long-term, slow and steady alternating history. The event of Great Extinction (extinction of a cluster) reflects a major sudden change in the global environment, breaking the record of life in geological history and its development, which indicates the most significant leap forward in the evolution of the biological world. In recent years, attempts have been made to study the remnant-recovery and its basic pattern of the global biological world after the Great Extinction and to explore the controlling factors of recovery. This marks a shift in the focus of geoscience (ie, the shift from extinction to the subsequent bio-remnants and recovery Research). Biological recovery revealed the first episode of the history of biological evolution after the Great Extinction, and the significance of its research goes far beyond what was expected. This hot frontier area requires high-resolution chronostratigraphy and systematic taxonomic studies, beginning with the analysis of taxonomic units at various levels and in-depth study of population biology, community ecology and biogeography 3 On the basis of the level, clarify the background, process and characteristics of the new ecosystem after the Great Extinction. The author emphasizes that based on the studies on the major post-extinction recovery of the Phanerozoic, it is one of the most important issues in the study of resuscitation to longitudinally compare the time limit, the type, the environment and the controlling factors of the biological remnants and resuscitation after the great extinction. Taking the 3 major extinctions of the Paleozoic as an example, the basic features of the subsequent biological remnants-resuscitation-radiation were discussed. South China is one of the most ideal areas for research on the recovery of the Paleozoic after the Great Extinction of the World in 2003. The thorough study of materials in South China will provide key research results involving the whole world