文献类型：期刊文献

英文题名：Long-term dynamics and driving mechanisms of plant communities in a temperate estuary in eastern China based on pollen analysis: a case study of the Liaohe Estuary

作者：Liu, Haoran[1,2,3] Liu, Weiwei[1,2,3] Wang, Jinzhi[1,2,3] Li, Wei[1,2,3] Zhang, Jingwen[1,2,3] Gong, Jian[1,2,3] Cui, Lijuan[1,2,3]

第一作者：Liu, Haoran

通信作者：Cui, LJ[1];Cui, LJ[2];Cui, LJ[3]

机构：[1]Chinese Acad Forestry, Key Lab Wetland Conservat & Restorat, Beijing, Peoples R China;[2]Chinese Acad Forestry, Inst Wetland Res, Beijing, Peoples R China;[3]Chinese Acad Forestry, Inst Ecol Protect & Restorat Res, Beijing, Peoples R China

年份：2025

卷号：16

外文期刊名：FRONTIERS IN PLANT SCIENCE

收录：;Scopus(收录号：2-s2.0-105004768323);WOS:【SCI-EXPANDED(收录号:WOS:001485367700001)】；

基金：The author(s) declare that financial support was received for the research and/or publication of this article. This work is supported from the National Key R & D Program of China (grant: 2022YFF1301000), the National Natural Science Foundation of China (grant: 72474215 and 72104236), the Fundamental Research Funds of Chinese Academy of Forestry (grant: CAFYBB2023MB018).

语种：英文

外文关键词：plant community characteristics; estuary; pollen analysis; environmental factors; human activities

摘要：Introduction: The Liaohe Estuary, a representative estuarine ecosystem in eastern China, has experienced significant shifts in plant community characteristics due to climate change and anthropogenic influences in recent decades. Methods: This study employed sediment 210Pb dating, pollen analysis, and environmental factor indicators to comprehensively assess the composition, trends, and drivers of plant communities in the Liaohe Estuary from 1944 to 2022. Results: The findings revealed that herbaceous plants dominated the estuary's vegetation under a cool and humid climate, though humidity exhibited a declining trend over time. Between 2001 and 2022, pollen concentration and herbaceous plant prevalence increased significantly. Key environmental drivers-mean annual temperature (MAT), salinity, grain size, pH, and agricultural production-were strongly correlated (p < 0.001) with plant community dynamics. Natural factors (grain size, salinity) enhanced the dominance of key species but reduced overall pollen concentration. Conversely, agricultural activities diminished dominant species proportions while increasing pollen concentration. Discussion: These results highlight the dual influence of climatic and anthropogenic factors on estuarine vegetation. The study provides a theoretical basis for restoring degraded estuarine ecosystems.