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林业科学 ›› 2003, Vol. 39 ›› Issue (zk): 106-111.doi: 10.11707/j.1001-7488.2003S119

• 论文及研究报告 • 上一篇    下一篇

不同间伐强度对巨尾桉林分生产力的影响研究

潘辉1 张金文2 林顺德4 赖银华5 王丽梅3   

  1. 福建省林业科学研究院,福州350012;福建省平和天马国有林场,平和363704;福建农林大学林学院,南平35300
  • 收稿日期:2003-03-11 修回日期:1900-01-01 出版日期:2003-12-25 发布日期:2003-12-25

EFFECTS OF DIFFERENT THINNING INTENSITY ON THE STAND PRODUCTIVITY OF EUCALYPTUS GRANDIS × E.UROPHYLLA

Pan Hui1,Zhang Jinwen2,Lin Shunde4,Lai Yinhua5,Wang Limei3   

  1. Fujian Academy of Forestry Fuzhou350012;Tian Ma National Forest Farm of Pinghe County, Fujian Province Pinghe363704;Forestry College of Fujian Agriculture and Forestry University Nanping353001
  • Received:2003-03-11 Revised:1900-01-01 Online:2003-12-25 Published:2003-12-25

摘要:

对造林密度为1 650株·hm-2 的3a生巨尾桉林分,设置1/2、1/3、1/4共3个间伐强度及不间伐对照4个处理,采用随机区组试验设计,研究不同间伐强度对巨尾桉林分胸径、树高、材积和生物量等生产力的影响。通过间伐前及间伐后3a各标准地的连续定位调查,对其生长量的方差分析结果表明:不同间伐强度对间伐3a后的林分胸径生长、立木单株材积的影响达极显著水平;对林分树高、蓄积量及生物量生长有一定的影响,但不显著。根据试验结果得出,通过间伐能提高巨尾桉人工林的生产力(包括间伐木材积) ,间伐后保留木的密度宜控制在1 100株·hm-2 左右,林分的生产力达到最大。

关键词: 巨尾桉, 间伐强度, 密度, 生产力, 生物量

Abstract:

The effect of different thinning intensity(1/2,1/3,1/4,CK) on the DBH, height, volume and biomass were studied by random block experiments in 3-year-old Eucalyptus grandis × E.urophylla plantation that the planting density was 1 650 trees·hm-2.According to located investigations of standard area in successive 3 years before and after thinning,the results showed that the effects of thinning intensity on the DBH, the individual standing volume of forest were extremely remarkable, and that on the height,volume and biomass of stands were not remarkable. Based on the experiment results, intermediate cutting can improve the productivity of E.grandis × E.urophylla plantation,and when the density of reserve-tree after intermediate cutting was about 1 100 tree·hm-2,the productivity of stand would be highest.

Key words: Eucalyptus grandis×, E. urophylla, Thinning intensity, Density, Productivity, Biomass