Successional dynamics of community structure and species diversity after clear-cutting of faxon fir (Abies faxoniana) forest stands

Abstract

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

Projecting future aboveground carbon sequestration rate of alpine forest on the eastern Tibetan Plateau in response to climate change

“…The transitional ecotone between biomes represents areas where abrupt changes exist in response to climate change ( Frelich and Reich, 2010 ), making this ecotone forest a sensitive region to climate change ( Wei and Fang, 2013 ). In addition, this area has experienced severe harvesting and artificial regeneration ( Miao et al., 2014 ), the forest structure and composition of this region have experienced substantial changes under the interaction of natural restoration and climate change, forest carbon sequestration has also been affected ( Huo et al., 2010 ; Zhang et al., 2023 ). Therefore, it is necessary to explore the long-term spatial and temporal variation of ACSR in the alpine forests of western Sichuan in the context of climate warming, to develop appropriate forest management strategies for the characteristics of the region.…”