黄龙山林区油松人工林模拟抚育与预测

Simulated Tending and Predicting the Pinus tabulaeformis Plantation in Huanglong Mountain

以油松人工林样地数据为基础,分别建立油松人工林胸径—冠幅模型、胸径生长模型,对黄龙山林区油松人工林进行模拟抚育与预测。结果表明：（1）模拟抚育后,林分平均胸径均有较大幅度增长,种群密度大于4 000株/hm2的样地和2 000~4 000株/hm2的样地抚育后平均胸径相似。（2）种群密度在2 000株/hm2以下的林分在抚育后第6 a可再次进行抚育。（3）种群密度在2 000株/hm2以上的林分在抚育后第9 a可再次进行抚育。

Based on the sample plots data of Pinus tabulaeformis plantations, we established DBH-crown model and DBH growth model, and performed the simulated tending and predicting the Pimts tabulaeformis plantation in Huanglong Mountain. After the simulated tending, the average DBH increased significantly, meanwhile, the average DBH of the 〉4 000 and 2 000- 4 000 ind./hm2 sample plots were similar. Forest stand of population density under 2 000 ind./hm2 can be tended again after 6 a. Forest stand of population density more than 2 000 ind./hm2 can be tended again after 9 a.