南京林业大学学报(自然科学版) ›› 2005, Vol. 29 ›› Issue (04): 109-112.doi: 10.3969/j.jssn.1000-2006.2005.04.026

• 研究简报 • 上一篇    下一篇

篌竹出笋成竹生长规律研究

陈玉华1,2,宋丁全1,2   

  1. 1. 南京林业大学森林资源与环境学院, 江苏 南京 210037; 2. 金陵科技学院动物科学系, 江苏 南京 210001
  • 出版日期:2005-08-18 发布日期:2005-08-18

A Study on Growth Regularity of Phyllostachys nidularia Munro in Shooting Period

CHEN Yu-hua1,2, SONG Ding-quan1,2   

  1. 1. College of Forest Resource and Environment Nanjing Forestry University, Nanjing 210037, China; 2. Department of Animal Science Jinling Institute o~[ Technology, Nanjing 210001, China
  • Online:2005-08-18 Published:2005-08-18

摘要: <正>利用全站仪进行森林三维导线测量,根据控制点坐标测算树木的三维位置,利用坐标可绘制树木分布图和森林资源分布图;根据全站仪自动测算的胸径(或任意处直径)、树高,代入相应的数学模型可求算树干的材积。全站仪自动测算林业数据,不仅提高了速度、效率和精度,而且可为林业数字制图和后期的GIS分析提供数据源。

Abstract: Phyllostachys nidularia Munro started shooting on April 8 or so and lasted about 32 days in Jurong, Jiangsu province. Few shoots emerged at the preliminary stage of shooting, more shoots emerged at the prosperous stage and the later stage of shooting. The situation of shoot emergence lasted longer at the later stage than that at the prosperous stage. The degraded shoot percentage increased at the first and declined later with the time. The rate of survived culm is higher at cuted experiment plots than that at not cuted experiment plots. The height growth of young culm of the earlier cohorts followed Logistic curve, while the later one followed exponential curve. The eulms of the earlier cohorts were higher than that of the later ones.

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