运用1985~2008年间的煤炭价格及相关数据,运用协整分析方法,构建了VEC模型,对影响煤炭价格的各因素进行了实证研究。实证结果表明,影响煤炭价格的主要因素有第二产业产值、国民生产总值、零售物价指数、煤炭成本和煤炭供给,这些变量所构成的煤炭价格检验模型精确度较高,能够较好地解释煤炭价格的变化;同时,各个变量和煤炭价格的综合长短期关系要好于长期关系。该模型定量测量了各影响因素对煤炭价格的影响权重及大小,以期为宏观调控部门影响和调控煤炭价格提供借鉴。
This article establishes a verification model of coal price(VEC) with cointegration analysis using data from 1985-2008,and carries on corresponding empirical study.Main factors affecting coal price are the secondary industry volume,GNP,retail price index,coal cost and coal supply.We discovered that the proposed verification model can predict the actual value of coal price with high forecast accuracy.This model has certain reference value for macro-control department and coal enterprises concerned.