Structure, quality and biodiversity of forest types in Ba Vi National Park, Ha Noi
Keywords:
Forest structure, biodiversity, forest quality, Ba Vi National parkAbstract
Understanding structural and biodiversity characteristics of a forest plant community is an important basis for studying an ecosystem and proposing technical measures to impact on the forest. The study conducted a total of 9 plots distributed in 3 different forest states: IIB, IIIA1 and IIIA2. The analytical results showed that the low diameter was in the state of IIB forest with D1,3 = 18.2 cm; for forest status IIIA1 was 19.82 cm and for IIIA2 forest was 21.15 cm. For the total height variable, it was similar, the smallest in IIB and then greater in the state of IIIA1 and IIIA2. Weibull distribution had a good simulation ability for both diameter and toal height frequency distributions of trees. Analysis results showed that good trees were usually trees with relatively large diameter and height trees. Trees of poor quality often concentrated on small diameter and height trees. Biodiversity of vegetation types was high, in particular, the highest biodiversity belonged to the forest status IIIA1. The lowest biodiversity was IIB forest status.
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