四川农业大学学报 ›› 2011, Vol. 29 ›› Issue (03): 322-322.

• 研究论文 • 上一篇    下一篇

不同劈草时间毛竹林的生长特征

范少辉1,刘广路1,官凤英1,蒋俊明2,郑宏3   

  1. 1. 国际竹藤网络中心,竹藤科学与技术重点实验室
    2. 四川省林业科学研究院
    3. 福建省洋口国有林场
  • 收稿日期:2011-05-10 修回日期:2011-07-17 出版日期:2011-09-30 发布日期:2011-10-13
  • 通讯作者: 范少辉
  • 基金资助:

    十一五科技支撑“人工竹林长期生产力保持和退化系统恢复技术”;十一五科技支撑“毛竹林的生态经营技术”

The growth characteristics of Phyllostachys pubescens forest with operation time

FAN ShaoHui1,LIU GuangLu1,Guan FengYing1,JIANG JuanMing2, 3   

  1. 1. International Centre for Bamboo and Rattan, Key Laboratory of Bamboo and Rattan
    2. Sichuan Academy of Forestry
    3. Administration Bureau of State Forest Farms of Fujian Province
  • Received:2011-05-10 Revised:2011-07-17 Online:2011-09-30 Published:2011-10-13
  • Contact: FAN ShaoHui

摘要:

林分结构是林分各项功能正常发挥的保证,探索经营时间梯度上的竹林结构特征,可以为制定合理的结构调整技术提供理论支持。本文对不同劈草时间毛竹林的生长特征及其影响因子进行了调查研究。结果表明,胸径、树高和新生竹株数与经营时间显著或极显著相关。随着经营时间的延长,毛竹林胸径、树高呈先上升后下降的趋势,新生竹株数呈下降趋势。经营10年后毛竹林平均胸径从8.44 cm增加到10.95 cm,提高了25.10%;随着经营时间的进一步延长,毛竹林平均胸径逐渐降低,到经营30年时胸径下降到10.12cm,下降了7.58%。经营10年后毛竹树高达到15.01m,比未经营毛竹林平均树高提高了18.00%;随着经营时间的延长,平均树高逐渐降低,30年时降低为14.18m,比10年时的树高降低了5.53%,为长时期经营毛竹林生产力退化提供了重要证据。通径分析表明,经营时间对毛竹林胸径和树高的直接和间接通径系数均最大,胸径和树高可以作为反映毛竹林退化的指标。

关键词: 毛竹林, 生长特征;影响因子;

Abstract:

The function of forest stand based on the structure of forest. To explore the bamboo structure on the operating time can provide the theoretical support for the reasonable technology. The growth characteristics and influence factors were investigated in bamboo forest. The result showed that there was extremely significant correlation between the operation time and the DBH, height of bamboo, and the numbers of new bamboo. The DBH and height of bamboo increased in first ten years, and then decreased with the operation time. The numbers of new bamboo decreased with the operation time. The DBH reached the maximum 10.95 ㎝, and the height of bamboo reached the maximum 15.01 ㎝ in ten years. The DBH decreased by 7.58% and the height of bamboo decreased by 5.53% in 30 years. The result may be evidence for the argument of productivity degradation of bamboo forest with operation time. The path analysis showed that direct path coefficient and indirect path coefficient of operation time to DBH and height of bamboo was best. Therefore, the index of DBH and height of bamboo can reflect the productivity degradation of bamboo with operation time.

Key words: bamboo forest, growth characteristics;influence factors;