Investigation indicates that the main four types of biological fireresistant forest belt in Thousandisles Lake district are Schima superba fireresistant forest belt(typeⅠ), S.superbaCastanopsis sclerophylla fireresistant forest belt (typeⅡ), Osmanthus fragransMichelia wilsoni fireresistant forest belt (type Ⅲ) and O.fragrans fireresistant forest belt (type Ⅳ). Of the four types of fireresistant forest belt, typeⅡand type Ⅲ are higher in species diversity than typeⅠand typeⅣ. As to the extent of similarity with the native evergreen broadleave forest, typeⅡranking first and typeⅠtakes the second place. The transformation of forest of Thousandisles Lake broadleaf forest would improve the fireproofing effectiveness of fireresistant forest belt, thus it was suggested that the construction biological fireresistant forest belt in Thousandisles Lake reservoir district should focus on typeⅡ belt, which had high species diversity, high fire performance ability and high similarity with native evergreen broadleaved forest. Further, the conservation of the small arbor trees of evergreen broadleaved of undergrowth such as Camellia fraternal, Eurya muricata, Cleyera japonica, Vaccinium bracteatum should be emphasized, by which the fireresistant forest belt construction should be achieved in coordination of development.
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