Challenges and opportunities in Quaternary palynology  

作　　者：Qinghai XU Houyuan LU Zhuo ZHENG 

机构地区：[1]College of Geographical Sciences,Hebei Key Laboratory of Environmental Change and Ecological Construction,Hebei Normal University,Shijiazhuang 050024,China [2]Key Laboratory of Cenozoic Geology and Environment,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China [3]School of Earth Sciences and Engineering,Sun Yat-sen University,Zhuhai 519082,China

出　　处：《Science China Earth Sciences》2024年第7期2148-2161,共14页中国科学（地球科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.41630753)。

摘　　要：Quaternary palynology plays a pivotal role in investigating global climate change and various other research fields,serving as an essential tool for the quantitative analysis of paleoenvironment changes.However,due to the vast diversity of terrestrial ecosystems and intricate interactions between vegetation,climate,and human activities,further advancements are required in the following aspects within this discipline.(1)The accuracy of classification in pollen morphology and fossil pollen identification needs improvement,particularly at the species level.This represents a significant challenge in present Quaternary palynology.Computer-aided intelligent recognition holds promise as a solution for species identification based on more detail pollen morphology.(2)Most pollen-based vegetation and climate reconstructions overlook the significance of bare ground.Neglecting bare ground can lead to substantial inaccuracies when quantitatively reconstructing past vegetation and climate.(3)While pollen records provide reliable information on paleoclimate changes,current quantitative climate reconstruction models heavily rely on modern pollen datasets derived from present-day vegetation disturbed more or less by human activities.This introduces bias and uncertainties into paleoclimate reconstruction.(4)Although pollen can serve as an indicator of human activities,accurately quantifying the intensity of human influence remains challenging.Improving accurate identification of crop pollen,reconstructing reliable land cover/use data,and integrating multidisciplinary data may enhance the identification and quantification of signals related to human activity in pollen records.

关 键 词：Quaternary palynology PALEOCLIMATE PALEOVEGETATION Human activity 

分 类 号：P534.63[天文地球—第四纪地质学] Q948[天文地球—古生物学与地层学]