沉积植物古DNA在第四纪植被重建中的应用  

Application of Plant Sedimentary Ancient DNA in Quaternary Vegetation Reconstruction

作　　者：徐海涛 李泉[1,2] 赵艳 XU Haitao;LI Quan;ZHAO Yan(Key Laboratory of Land Surface Pattern and Simulation,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院地理科学与资源研究所陆地表层格局与模拟院重点实验室,北京100101 [2]中国科学院大学,北京100049

出　　处：《地球科学进展》2024年第8期801-812,共12页Advances in Earth Science

基　　金：国家重点研发计划项目(编号:2022YFF0801501);国家自然科学基金项目(编号:42277454,41977395)资助。

摘　　要：沉积植物古DNA是分析古植被信息的前沿手段,可以从分子生物学视角为古植被和古环境重建提供更开阔的视野。分析了沉积植物古DNA保存的主要影响因素;概述了沉积植物古DNA分析流程;综述了沉积植物古DNA在重建植物群落动态演变过程、气候与环境变化以及生态演化对人类活动的响应等领域的相关研究进展,沉积植物古DNA分析通过提供快速和高分辨率的古植物物种信息,能够重建植物群落演变过程,定量、半定量重建古气候,并探究人类农牧活动对生态系统的影响。未来的研究中应该构建更加完善的植物物种DNA分类参考数据库,加强沉积植物古DNA分子的埋藏学研究,推广其在第四纪古环境研究中的应用,同时构建多指标记录以获得更完整的古生态信息。沉积植物古DNA将在古植被与气候变化以及人类活动关系研究中发挥更广泛的作用。Plant sedimentary ancient DNA is an advanced method to analyze the information on paleovegetation,which can provide a broader perspective and additional details regarding paleovegetation and paleoenvironment from the perspective of molecular biology.We analyzed the main factors influencing the preservation of ancient plant sedimentary DNA.In addition,we outline the process of plant sedimentary ancient DNA analysis.We synthesized the progress of research on plant sedimentary ancient DNA in the dynamic evolutionary processes of plant communities,the reconstruction of climate and environmental changes,and the reconstruction of ecological evolutionary responses to human activities.By providing rapid,high-resolution information on ancient plant species,the ancient DNA analysis of plant sediments can be used to reconstruct the evolution of plant communities,quantitatively and semi-quantitatively reconstruct paleoclimates,and explore the impacts of human agricultural and pastoral activities on ecosystems.In the future,we should construct more perfect reference data for the DNA classification of plant species,strengthen the burial study of plant sedimentary ancient DNA molecules,promote the application of plant sedimentary ancient DNA in Quaternary paleoenvironmental research,and combine it with multiple indices to obtain more detailed paleoecological information.Therefore,plant sedimentary ancient DNA plays an important role in understanding the relationships between ancient vegetation,climate change,and human activity.

关 键 词：沉积植物古DNA 第四纪植被重建 古DNA分析 

分 类 号：P532[天文地球—古生物学与地层学]