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生态学杂志 ›› 1985, Vol. ›› Issue (3): 16-21.

• 研究报告 • 上一篇    下一篇

洞庭湖区常绿阔叶林的特征与分析

彭德纯1, 袁正科2, 汤传夫2, 彭光裕2, 廖起凤2   

  1. 1. 湖南省林学会;
    2. 沅江县林业局
  • 收稿日期:1983-11-04 出版日期:1985-06-10

Characteristic Analyses of Evergreen Broadleaf Trees in Dongtinghu Area

Peng Dechun1, Yuan Zhengke2, Tang Chuanfu2, Peng Guangyu2, Liao Qifeng2   

  1. 1. Hunan Society of Forestry;
    2. Bureau of Forestry, Yuanjiang County
  • Received:1983-11-04 Online:1985-06-10

关键词: 改进单纯形, 神经网络, 自疏规律, BP-MSM混合算法

Abstract: Evergreen broadleaf trees grown on hilly lands of Dongtinghu area consist of 6 populations. These populations except that of camphor tree have more stable structure and components, being zonal vegetations of this area. They are cold-resistant and occur in the northern distribution limit of evergreen broadleaf trees, exhibiting characteristics of transition from northern Asian tropical vegetation to central Asian tropial vegetation. In the forests, there are 268 species (156 genera, 84 families) of plants with vascular bundle.

Key words: Modified simplex method, Artificial neural network, self-thinning, BP-MSM mixed algorithms