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根据 1 90 0个样方和 90株幼树解析木调查资料 ,对大兴安岭云杉林天然更新进行了评定、分析和研究 ,并对云杉林幼树生长进行了模拟和预测
Based on the data of 1 90 0 quadrats and 90 saplings of the tree structure analysis, the natural regeneration of the spruce forest in Daxinganling was evaluated, analyzed and studied. The growth and development of spruce seedlings were simulated and predicted