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Age structure and dynamics of Quercus wutaishanica population in Lingkong Mountain of Shanxi Province, China.

ZHANG Jie1, SHANGGUAN Tie-liang2,3, DUAN Yi-hao2, GUO Wei3, LIU Wei-hua3, Guo Dong-gang2   

  1. (1College of Life Science, Shanxi University, Taiyuan 030006, China; 2College of Environmental & Resource Sciences, Shanxi University, Taiyuan 030006, China; 3Institute of Loess Plateau, Shanxi University, Taiyuan 030006, China)
  • Online:2014-11-18 Published:2014-11-18

Abstract: Using the plant survivorship theory, the age structure, and the relationship between tree height and diameter (DBH) of Quercus wutaishanica population in Lingkong Mountain were analyzed, and the static life table was compiled and the survival curve plotted. The shuttle shape in age structure of Q. wutaishanica population suggested its temporal stability. The linear regression significantly fitted the positive correlation between tree height and DBH. The maximal life expectancy was observed among the trees beyond the age of the highest mortality and coincided with the lowest point of mortality density, suggesting the strong vitality of the seedlings and young trees that survived in the natural selection and intraspecific competition. The population stability of the Q. wutaishanica population was characterized by the Deevey-Ⅱ of the survival curve. The dynamic pattern was characterized by the recession in the early phase, growth in the intermediate phase, and stability in the latter phase.