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本文描述旨在择伐菲律宾北吕宋的龙脑香林而推导出的生长预测模型。在推导该模型的过程中,对林分产量(作为应变量)与初始树干断面积,地位级与时间(均作为说明性变量)之间的一般函数关系的不同变差进行了检验。该函数关系的最后形式乃是一个线性模型,包括林分产量的对数(作为初始树干断面积和时间的对数的函数)及地位级与时间的比率。采用了一组基于现实伐区的样地的抽取时间的系列数据。按照采伐作业后经过的年数来表示时间。利用采伐后保留下来的龙脑香优势木和次优势木的平均全高确定择伐龙脑香林的立地指示物。
This article describes a model of growth prediction derived from the selection of binocarpine in Northern Luzon, the Philippines. In deriving the model, different variances in the general functional relationship between stand yield (as a dependent variable) and the initial trunk cross-sectional area, status level, and time (both as explanatory variables) were examined. The final form of the functional relationship is a linear model that includes the logarithm of stand production (as a function of the logarithm of the initial trunk area and time) and the rank-to-time ratio. A series of series of data based on the sampling time of the plot of the actual cutting area was used. According to the number of years after harvesting operations to indicate the time. Based on the average total height of the durban and the sub-dominant woods remaining after harvesting, the site-selection indicator of Hypaconavalin was determined.