中文摘要：

地位指数表是评价立地质量的重要指标之一。本文应用采集的解析木资料,选用6个导向曲线模型对标准地内平均优势木的树干解析资料进行拟合。由拟合结果确定Richards函数为最佳导向曲线模型。在分析杨树高生长在各指数级间的多形特征的基础上,建立了多形地位指数模型,并编制了多形地位指数表。经检验表明,编制的多形地位指数表具有较好的精度。

英文摘要：

Site index table is an important indicator of the site quality evaluation.The best guiding curves were selected from six models with data of stem analysis.Based on analyzing the characters of tree height growth in each index,the standard site index function with polymorphic and the index table were formed.The results showed that the polymorphic site index table could be used to guide the management of real forest in Shandong province.This study could offer quantity basis for the management of the growing artificial forest of poplar in Shandong province.