| 摘要: |
| 热带地区幼林抚育管理的方法的研究很少报道。本文选择了川楝(Melia toosanden Sie.et Zucc.)、顶果木(Acrocarpus fraxinifolius Arn. ex Wight)、马占相思(Acacia mangium Willd.)、山桂花(Paramichelia baillonii (Pierre) Hu.)、柚木(Tectona grandis Linn. f.)、云南石梓(Gmelina arborea Roxb.)等6个热带亚热带速生造林树种，定植于造林地上，对每一树种分别采用林农间作管理和一般管理即每年进行两次砍草和铲塘的两种方式进行幼林管理；定植后3a时测定保存率、地径、树高、冠幅生长量并进行统计分析，以探讨能否将混农林系统引入造林地管理上来。结果显示：利用林农间作方式管理造林林地平均可以提高保存率10%，加快地径生长2.00~4.30倍，加快树高生长1.89~4.51倍，使造林地提前1~3a达到郁闭，而使造林具有较好的效果并减少林地抚育的年限和抚育的投入。 |
| 关键词: 林农间作，幼林抚育，生长量 |
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| 基金项目:中国科学院、云南省科委“省院合作”项目（99F01）。 |
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| EFFECTS OF ALLEY CROPPING MANAGEMENT ON THE GROWTH QUANTITY OF YOUNG FOREST IN SOUTH YUNNAN, CHINA |
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Liu QingYun
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| Abstract: |
| Agroforestry is said to be a good means for land management, it has many benefits in ecological, economic and social aspects. In this paper, we studied the advantages of agroforestry management in reforested land in South Yunnan, China by analyzing the survival rate, base diameter, height and crown growth of six tropical fast-growing tree species i.e., Melia toosanden Sie.et Zucc., Acrocarpus fraxinifolius Arn. ex Wight, Acacia mangium Willd., Paramichelia baillonii Hu., Tectona grandis Linn. f., Gmelina arborea Roxb., which have been planted in fomer tilth with different managements – alley cropping and normal management. The results show that by average, the survival rate of the young forest of the six tree species with alley cropping management increased by 10 percent, the base-diameter-growth was 2~4.3 times and the height-growth 1.89~4.51 times as fast compared to normal management. Moreover, our results also suggest that the forest canopy closure will advance by 1~3 years by alley cropping management against normal management. |
| Key words: Alley cropping, silviculture, cultivation withdrawal for afforestion, young forest manage, growth quantity |
