节点文献
基于系统动力学的中国经济多部门预测模型研究
China Economic Multidisciplinary Trend Prediction Based on Sd Simulation
【作者】 杨超;
【导师】 刘新建;
【作者基本信息】 燕山大学 , 区域经济学, 2012, 硕士
【摘要】 经济系统是一个复杂巨系统,经济的可持续发展必须考虑到多种因素相互关系、共同发展的动态机制。不同国家的经济系统有自己的系统特点,本文以中国经济系统为研究对象,在系统动力学的基础上,结合中国经济系统的实际情况,探讨了中国经济系统的特点。本文的研究目的是建立中国经济系统动力学仿真模型,利用此模型对我国经济在现有的发展模式下的发展进行预测,并为揭示我国经济系统发展的优化方案做初步的尝试。本文首先分析中国经济系统的结构,揭示了中国经济系统中主要的反馈回路,构建了经济系统因果关系图,并根据因果关系图绘制了中国经济系统动力学流图。其次经过反复的实验模拟确定了经济变量间的关系式,其中主要使用了一元线性回归、二元线性回归、S型增长曲线、一元三次回归、对数线性回归、二元二次-正弦本底趋势线模型。最终的模拟结果与实际值的相对误差基本在7%以内。再次在建立的中国经济系统动力学模型的基础上,对2010年到2020年的中国经济发展情况进行了趋势预测,并就与人口、投资、生产、消费、进出口、能源和环境污染相关的重要指标进行了分析。在预测结果分析的基础上,针对中国经济系统可能存在的一些问题,设计了四种仿真方案,对比各个方案的仿真结果,给出了简要分析。最后,在对趋势仿真预测结果和四种方案仿真结果分析的基础上,针对固定资产投资结构的调整、产业结构的调整、城乡居民人均收入差距的缩小、工业污染的控制等方面的问题给出了我国经济发展的一些对策建议。
【Abstract】 Economic system is a complex giant system, sustainable economic development musttake into account a variety of factors’ dynamic mechanism. Different countries have theirown system of economic system, this dissertation based on the Chinese economic systemas the research object, the system dynamics on the basis of Chinese economic system,combined with the actual situation, discusses the characteristic of system of economy ofchina. The purpose of this study is to establish the Chinese economic system dynamicssimulation model, use this model to our country economy in the existing developmentmode forecast, and to find the system of our country economy development optimizationscheme makes the preliminary attempt.This paper firstly analyzes the Chinese economic system structure, straighten out theeconomic system in China the main feedback loop, build economic system of causaldiagram, and according to the causality diagram drawing of Chinese economic systemflow diagram. Through the experiment to determine the relation between economicvariables. And in system dynamics software Vensim PLE based on system dynamicsmodel in experiment, the final simulation results and the actual value of the relative errorof less than7%.Then in the establishment of the Chinese economic system dynamics model on thebasis of economic development, and carried out scientific prediction. The importantindexes are analyzed. The prediction results based on the analysis of Chinese economysystem, aiming at the existing problems, to design the four kinds of simulation methods,comparing the simulation results are given brief analysis.Finally, to Chinese economic system simulation prediction and the prediction resultsof four kinds of scheme on the basis of the analysis, the four aspect gives our countryeconomy development the proposal of a few countermeasure.
【Key words】 Chinese economy; forecast; system dynamics; industrial structure;