Is the Centre of a large area there are elements more or less similar in geology, geomorphology, landscape, climate and culture, with the Northeast Bai TU Long Bay and Catba Island, Halong Bay's Southwest limits in an area of approximately 1,553 km ² including 1,969 Islands mostly limestone islands, of which the core region of the Bay has an area of 335 km ² Island 775 dense clusters [1]. Tectonic history of the limestone geology of the Gulf has spent about 500 million years with the ancient geographical circumstances are very different; and complete Karst evolution spent over 20 years with a combination of factors such as the thick limestone floors, hot and humid climate and lifting the slow tectonic process on the overall [2]. The combination of climate, environment, geology, geomorphology, Ha Long Bay become clusters of biodiversity, including ecosystem-evergreen forests tropical rain and coastal and marine ecosystems with many minor ecosystems [3]. 14 species of endemic flora [4] and about 60 species of endemic animals [5] has been discovered among thousands, of plant populations in the Bay.
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