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50年代初伊春林区,按传统方式营造的红松人工纯林,60年代后半期逐渐出现成活率和保存率低,分权率高的问题。为此,从60年代未期便模拟小兴安岭的地带性植被一阔叶红松林的演替模式,采取“栽针保阔”的造林方式,即在郁闭度0.5—0.8的天然阔叶混交林冠下进行红松人工更新,大面积地开展恢复红松资源的育林工作。十几年的观测表明,“栽针保阔”不失为解决红松人工更新的有效方法。“栽针保阔”与60年代未出现的林冠下造林是有
In the early 1950s, Yichun forestry area was the traditional Korean pine plantation. In the latter half of the 1960s, there were gradually emerging problems of low survival rate and high decentralization rate. Therefore, from the succession model of coniferous broad-leaved Korean pine forest which simulates the zonal vegetation in the Xiaoxing’an Mountains in the 1960s, the afforestation mode of “ Under the artificial regeneration of Korean pine, large areas to carry out the restoration of Korean pine forest resources work. More than 10 years of observations show that ”planting needles Paul“ after all, an effective solution to the artificial regeneration of Korean pine. ”Planting needles protect the broad" and the 60s did not appear under canopy afforestation is there