地质与资源2026，Vol.35Issue(2)：133-140,8.DOI:10.13686/j.cnki.dzyzy.2026.02.001
三江平原宝清地区晚更新世晚期以来孢粉组合及古气候
Spore-pollen assemblages and paleoclimate in Baoqing area of Sanjiang Plain since the late Late Pleistocene
摘要
Abstract
Based on the study of spore-pollen assemblages from PM03 profile in Longquan village of Longtou Town,Baoqing area,supported by chronological dating data,four pollen zones have been identified since the late Late Pleistocene.Pollen Zone Ⅰ(63.35-45.51 ka)is characterized by a savanna landscape,indicating a cool and dry climate.Pollen Zone Ⅱ(45.51-37.28 ka)consists of coniferous forests dominated by Pinus and Picea,suggesting a colder and somewhat more humid climate compared to the previous stage.Pollen Zone Ⅲ(37.28-23.56 ka)features a coniferous forest with a grassland landscape where herbs increased again,reflecting a cold and dry climate.Pollen Zone Ⅳ(23.56 ka to present)is marked by a sharp increase in Picea and a forest meadow landscape,with a climate that gradually transitioned to cold and wet.The climatic evolution in this area follows a sequence of cool-dry,cold-humid,cold-dry,and cold-wet,exhibiting an alternating pattern of cold-wet to warm-dry conditions.关键词
孢粉组合/晚更新世/古气候/植被类型/三江平原Key words
pollen assemblage/Late Pleistocene/paleoclimate/vegetation type/Sanjiang Plain分类
天文与地球科学引用本文复制引用
赵建,孔繁鹏,张苍江,张也,刘洪博,邵吉亮,张磊,董凯..三江平原宝清地区晚更新世晚期以来孢粉组合及古气候[J].地质与资源,2026,35(2):133-140,8.基金项目
中国地质调查局项目"三江平原宝清地区黑土地地表基质层调查"(DD20211588)、"三江平原宝清湿地退化区1∶5万地表基质调查"(DD20242039) （DD20211588）
自然资源综合调查指挥中心科技创新基金资助项目"高强度利用下黑土地地表基质养分元素变化规律及机理研究"(KC20220002). （KC20220002）
