南京林业大学学报(自然科学版) ›› 1998, Vol. 22 ›› Issue (01): 1-4.doi: 10.3969/j.jssn.1000-2006.1998.01.001

• 研究论文 •    下一篇

Ⅰ-69杨胶合板用材林最佳造林密度研究

梁军;徐锡增;吕士行   

  1. 南京林业大学森林资源与环境学院
  • 出版日期:1998-03-18 发布日期:1998-02-18

STUDIES ON THE OPTIMUM PLANTING DENSITY OF I-69 POPLAR PLANTATION FOR PLYWOOD

Liang Jun Xu Xizeng Lü Shixing   

  1. College of Forest Resources and Environment Nanjing Forestry University Nanjing 210037
  • Online:1998-03-18 Published:1998-02-18

摘要: <正>根据290块I-69杨标准地调查资料,以密度效应模型为基础,以林分胶合板材产量最大为目标,导出了最佳造林密度模型。通过对模型拟合,采用最佳造林密度模型求得I-69杨胶合板用材林造林密度为小于286株/hm2。立地指数小于等于16m的立地不宜用于营造胶合板用材林。要实现胶合板材培育的基本目标D>26.8cm,林分优势高必须大于28.9m。以选择立地指数大于等于20m的立地为佳。在立地指数18、20、22m条件下,满足I-69杨胶合板用材林培育目标的最短轮伐期分别为11、10、9a;最大造林密度为257、240、236株/hm2。

Abstract: According to the survey data of 290 valuationareas and the stand denstity effect model, to aim at maximum yield for stand plywood timber and to deduce the optimum planting density model. Through fitting the model, planting density of plywood timber forest of poplar clone I-69 should be not more than 286 trees per hm2. The land with site index not more than 16m is not suited to management of plywood timber forest. For the sake of practice basic objective of cultivation plywood timber D>26. 8 cm, stand dominant height should be more than 28.9 m. The best to select land with site index is more than or equal to 20m for management of plywood timber forest of poplar clone I-69. On the condition of 18, 20, 22 m site indices, the shortest rotation fitted with cultivation objective of plywood timber forest of poplar clone I-69 is 11, 10, 9 years respectively;the most plantng density is 257,240,236 trees per hm2 respectively.