dynamics of community structure and species diversity after clear鄄cutting of faxon fir ( Abies faxoniana) forest stands.Acta Ecologica Sinica,2014,34(13) :3661鄄 3671. Abstract: In the early 1950s, the subalpine forests in western Sichuan province were dominated by old growth Abies faxoniana forests, large scale logging occurred between 1954 and 1965 and clear鄄cut was used as the predominant harvest method. Up to 1965 timber yield dropped dramatically for a little of harvestable forest stands and timber harvest operation stopped completely in 1998 when the Natural Forest Protection Program began in the region. In order to clarify the recovery processes of the forests region in western Sichuan Province, China, we studied the dynamics of community structure and species diversity over the first 60 year period of secondary successional stages in the Miyaluo forest area. We observed successional changes in the secondary forest community by adopting the concept of space as a substitute for time. We http: / / www.ecologica.cn established 34 20 m 伊 20 m plots at study sites located at altitudes between 3100-3600 m on shady slopes the Miyaluo forest area. Our study showed that the secondary forests were characterized by Betula albo鄄sinensis, Betula platyphylla, and A. faxonniana. The vascular plants recorded in the plots included 107 species of 79 genera from 38 families ( x herb species, y shrub species, and z tree species) . Tree density increased over the first 40 years of successional stages, but then
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