【摘要】 以生长于一平浪林场的云南松林为研究对象,利用该林分小班的二类调查数据进行了单形树高生长导向曲线,多形树高生长导向曲线构建并编制地位指数表的研究。结果表明,运用多形曲线法,假设不同立地条件下的树高生长曲线不相同,利用不同形状不同发展趋势的多形曲线来描述各立地条件下的林分生长状态,它能够解决单形曲线法在样地的树龄、立地分布不均时,导致的导向曲线的斜率偏高或偏低的现象。由此表明,建立多形导向曲线法编制地位指数表很有价值。更多还原

【Abstract】 Taking the Pinus yunnanensis stands in Yipinglang forest farm as study target,the single-form height growth curve and multi-form height growth curve of the stand were studied by using the data of forest resource survey.The results indicated that applying the method of multi-form curve,supposing the height growth curves under different site conditions were different,the stand growth of the studied site conditions could be described by using the multi-form curve of different shapes and different development trends.This kind of multi-formed curve method can solve the problems of single-form curve method while studying the sampling sites with different ages and uneven distribution of site conditions.It is therefore a very meaningful method.更多还原