环境经济系统SD模型的建立

The Establishment of SD Pattern for Environmental Economy System

利用系统动力学对环境经济系统进行研究。对镇江市而言 ,系统动力学模型分成三块 :工业子模型、人口子模型和环境污染子模型。三个子模型相互联系、相互影响、相互制约。以工业子模型为例说明了SD模型的建立。通过分析 ,绘制了工业子模型的因果反馈图 ,并进行了流图分析 ,据此采用系统动力学专用语言DYNAMO语言 ,编写工业子模型仿真程序。最后对模型进行了有效性验证。

This paper studies environmental economy system by using the theory of systematic dynamics. As to Zhenjiang City, systematic dynamics can be divided into 3 parts: industry sub pattern, population sub pattern and environmental pollution sub pattern, which are closely connected, influence and interact with one another. The authors take industry sub pattern for example to illustrate the establishment of SD pattern. Through analysis, the authors draw a cause and effect feedback chart to which the authors give flow diagram explanation. Besides, the authors work out the emulation program of industry sub pattern by using the special purpose language of systematic dynamics, DYNAMO language. In the last part, the industry sub pattern is verified by an effective test.