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Abstract:
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Palyno1ogica1 study in a deep core (69.5 m depth) in the coasta1 area of the Red River De1ta, Vietnam provides evidences on vegetation change in the regiona1 area in about 12000 years before present. This research aims to reconstruct the vegetation deve1opment and paleoenvironmenta1 changes in the Red River Delta, Vietnam during the Holocene. These data show that the region supported a Fagaceae-Coniferous, especially Quercus, Pinus và Castanopsis, similar to contemporary vegetation described in Vietnam and southeast China. Tropica1 broadleaf forest dominated at the time right after 12.000 BP. At the same time, Scyphiphora hydrophyl/aceae is the dominant wood species in the back mangrove forest at the studied area. After this time, the elima te became warmer a1though there were severa1 periods with co1der climate in between. |