Abstract
Since 1950, 700 plots were established in the alpine and canyon region of western Sichuan. The distribution characteristics and the relationships between forest succession and environmental gradients were studied. The results showed that the main tree species werePicea andAbies in this region, and there were more than 90 forest types.Abies forests mainly distributed in the middle and upper reaches of rivers and their branches, andPicea forests mainly distributed in the wide valleys and on half-shaded and half-sunny slopes. The natural regeneration was poor under primitive spruce and fir forest canopy, but was good in the spruce and fire forest gap. The relationship between forest succession and vertical gradient was closely related to the relationship between forest succession procession and plant synusia under primary forests. Human activities could promote and postpone succession process. The results of expanding regeneration were often influenced by topography, vegetation and wind direction.
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Foundation item: This article was supported by State Tenth Five-Year Plan Project (2001 BA510B0105) and the Project for Pioneering New Knowledge from Chinese Academy of Sciences (KZCZ2-SW-319).
Biography: XIANG Cheng-hua (1966-), male, Ph. Doctor, Professor in Sichuan Research Institute of Forestry, Chengdu 610081, P. R. China.
Responsible editor: Zhu Hong
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Cheng-hua, X., Yu-po, Y. Distribution characteristics and succession regulation of the forests in alpine and canyon region of western Sichuan Province, P. R. China. Journal of Forestry Research 13, 327–330 (2002). https://doi.org/10.1007/BF02860101
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DOI: https://doi.org/10.1007/BF02860101