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Pollen analysis and charcoal indices of a 153-cm-long lake sediment core from Lake Taibai (TN1 core) in Hubei Province disclosed seven stages of the vegetational changes in Lake Taibai drainage area over the past 1500 years. During 520-1310AD, the vegetational changes were mainly controlled by the climatic changes and the influence of human activities on vegetation was relatively weak. Stage of 1310-1710AD, the influencing intensity of human activities on vegetation gradually increased, and the stage was a transitional period of main factors from natural control to human activities drive. Since 1710AD, the vegetational changes were controlled by human activities and the climatic signal from the vegetational changes was relatively weak. According to the pollen assemblage, the climatic changes with three warm periods of 520-720AD, 1050-1310AD and since 1950AD and two cold periods of 720-1050AD and 1310-1710AD could be speculated.

hupo kexue

Climatic changes and human activities revealed by pollen records in Lake Taibai, Hubei Province, the middle and lower reaches of the Yangtze River region over the past 1500 years