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首页> 外文期刊>Journal of Korean Forest Society >The Production Objectives and Optimal Standard of Density Control Using Stand Density Management Diagram for Pinus densiflora Forests in Korea
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The Production Objectives and Optimal Standard of Density Control Using Stand Density Management Diagram for Pinus densiflora Forests in Korea

机译：用韩国品种Densiflora森林稳定密度管理的生产目标和最佳密度控制标准

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摘要

This study has utilized the stand density management diagram to devise an efficient management standard for the stand density for Pinus densiflora that secures the health of the stands and predicted the harvest goals. The appropriate stand control level was estimated by modeling the relationship of the relative yield index (Ry) to the ratio of slender trees within the stand through an exponential function; the coefficient of determination (R~) was found to be 0.424 according to the estimation. The ratio of slender trees within the stand showed a tendency of rapid increase at a certain relative yield index; with this relational function, the appropriate Ry value of 0.84 was obtained. By estimating the curve of the Ry value 0.84, which was the appropriate stand density management level, as well as the height of dominant trees in the central region of Korea, the production objective for each site index was set. Assuming that the final age by the site indices ranged from 10 to 16 for the P. densiflorain central region of Korea, the number of production was estimated to be between 426 to 1,311 trees per ha. It was predicted that the production of medium-diameter logs larger than 30 cm in diameter is possible for the target DBH at a site index of morethan 16; small-diameter logs larger than 20 cm in diameter for site indices 12 and 14 enabled, and small-diameter logs of less than 20 cm for site index 10.
机译：本研究利用林分密度管理图为赤松的林分密度设计了一个有效的管理标准，以确保林分的健康并预测收获目标。通过指数函数模拟林分内相对产量指数（Ry）与苗木比例的关系，估算出合适的林分控制水平；根据估算，测定系数（R~）为0.424。在一定的相对产量指数下，林分内细木比例呈快速增加趋势；利用该关系函数，得到了合适的Ry值0.84。通过估算Ry值0.84的曲线（Ry值为适当的林分密度管理水平）以及韩国中部地区优势树的高度，确定了每个立地指数的生产目标。假设根据韩国中部地区的立地指数确定的最终树龄范围为10至16年，生产数量估计为426至1311棵/公顷。据预测，在立地指数大于16的情况下，目标胸径可以生产直径大于30cm的中径原木；对于立地指数12和14，启用直径大于20cm的小直径原木，对于立地指数10，启用直径小于20cm的小直径原木。

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