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cje ›› 1992, Vol. ›› Issue (2): 61-63,74.

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Leaf Shape Curve Equations of Broad-Leaved Trees——Mathematical Models Suitable for Leaf Area Calculation

Tian Xingjun   

  1. Northeast Forestry University, Harbin 150040
  • Received:1990-12-06 Revised:1991-04-09 Online:1992-04-10

Abstract: Based on observation and study, 3 curve equations for various leaf shapes,ellipse, oval and spindl, are advanced. These models provides scientific basis and available methods for calculating leaf areas of broadleaved trees.

Key words: seasonal freeze-thaw, soil nitrogen mineralization, alpine forest, climate warming