RRC ID 70671
Author Shengrui Zhang, Yuanhao Sun, Manyue Li, Na Wang, Qinghai Xu
Title Paleovegetation and paleotemperature in North China during the mid-Holocene based on sedimentological and palynological evidence from Lake Baiyangdian
Journal Palaeogeography, Palaeoclimatology, Palaeoecology
Abstract The North China Plain is climatically sensitive and is also noted as one of the principal regions in East Asia experiencing pronounced climatic warming. We reconstructed the paleoclimate and paleoenvironment of a lake site in North China Plain during the mid-Holocene warm period, in order to provide reference data for assessing possible futures changes in the ecological environment in the context of ongoing climate change. The reconstruction is based on the chronology, sedimentology and pollen assemblages of two sedimentary sequences from the Lake Baiyangdian area, which are used to determine the regional vegetation composition and paleotemperature of the hinterland of the North China Plain during the mid-Holocene. The results show that the extent and distribution of Lake Baiyangdian varied due to river channel changes, which also affected the sedimentary facies and the patterns of erosion and accumulation. The pollen assemblages from the lacustrine deposits are derived from the entire catchment of Lake Baiyangdian and they reflect regional patterns of climatic and environmental change. During the mid-Holocene, mixed broadleaf-coniferous forest dominated the western mountains and hills, intrazonal grassland developed on the alluvial fans, and lake-swamp-floodplain environments developed in the hinterland of the North China Plain. Statistical analysis of the modern distribution and climate thresholds of Ceratopteris were used to estimate the mean annual temperature (MAT) and mean January temperature (MJaT) of the Lake Baiyangdian area during the mid-Holocene, which were respectively 3.5 °C and 7.7 °C higher than today. Our findings provide a scientific basis for landscape reconstruction and paleoclimate modelling in North China.
Volume 595
Pages 110982
Published 2022-4-6
DOI 10.1016/j.palaeo.2022.110982
Resource
GBIF Fern (Pteridophyta) specimens of Toyama Science Museum Plant specimens of Toyota City Nature Sanctuary (from non-museum circle) Vascular plant specimens of Nagano Environmental Conservation Research Institute, Nagano Prefecture Vascular Plant Collection of Natural History Museum and Institute, Chiba Vascular Plant Specimens of Yamagata Prefectural Museum Vascular Plants Collection of National Museum of Nature and Science Vascular plant specimens of Toyama Science Museum Gunma Museum of Natural History, Vascular Plant Specimen Vascular Plant Specimens of Kochi Prefectural Makino Botanical Garden Vascular plant specimens of National Museum of Nature and Science (TNS)