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通过对不同郁闭度、带状皆伐、全光裸地造林等条件下的红皮云杉人工林更新的调查与分析。确定适宜人工更新的几种方式
The investigation and analysis on the regeneration of Picea koraiensis plantation under different canopy density, banded clear cutting and all-bare planting. Identify several ways to update manually