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通过全年收集2～6林龄桉树(刚果12号W5无性系)枝、叶凋落物量和测定树冠冠幅,研究了枝、叶凋落物产生的相关规律.结果表明:低温和较低的降雨量以及树冠竞争促使枝、叶凋落物产生,叶凋落物占主要部分;2月和10月以及桉树2林龄和5林龄是枝、叶凋落物产生的月高峰期和林龄高峰期;树冠的竞争促进了枝叶凋落物的产生,树冠扩展时凋落物量最小.认为掌握凋落物月高峰期和林龄高峰期对确定桉树人工林采伐时期和季节以及维护林地养分平衡具有理论和实践意义.
The law of branch and leaf litter generation was studied by collecting the amount of branch and leaf litter of 2 to 6 years old Eucalyptus (Congo 12 W5 clones) and measuring the canopy crown.The results showed that the low temperature and low rainfall And crown competition led to branches and leaf litter, leaf litter accounted for the major part; February and October and Eucalyptus 2 years and 5 years of age are branches and leaves litter peak and peak age; crown The competition of litters promoted the emergence of litter and leaf litter, and the lowest amount of litterfall was when the crown was extended.It is of theoretical and practical significance to know the monthly peak litter age and peak age of forest to determine the harvesting season and seasons of eucalyptus plantation and to maintain the nutrient balance of forestland.