| Shanbei is famous of agricultural cultivation for many years,and the slope farmland,occupies a larger proportion of farmlands.The slope farmland will seriously affect the ecological environment and agricultural development and becomes one of the major obstacles to the development of economy in the area.As a result,it is essential that how to make rational use of sloping land and adjust its industrial structure.In this paper,it take the Northern Shaanxi area as the region of studying and the slope farming system as the object.Firstly,base on the investigation of the ecological environment and present situation of the slope farmlands in Northern Shaanxi area, the paper analyze the factors in the slope farmlands system and relationships between them,which use the theory of System Dynamics,and it uses the Systems Dynamics to establish its causality pictures and SD flowing charts.Secondly,according to the SD flow chart,it programme and analog simulation and the economic projection research to the Northern Shaanxi area's slope farmlands system.Then taking Mizhi County's slope farmlands use as the example,th article design proposal,and carrie on the system simulation and forecast that the level of various industrial development and the value,Finally it draw the conclusion and give the concrete strategy and the suggestion.The paper is based on a provincial soft science research project,the paper has two characteristics.Firstly the previous studies on the using of the slope farmland mainly from the perspective of micro-analysis patterns,however,in this paper,the application of System Dynamics from a macro perspective on the industrial structure in Northern Shaanxi sloping farmlands planning,simulation and forecasting. Secondly,based on Mizhi County' s the situation and the data in present,the paper use software Vensim on their simulation model to make rational use of sloping famelands in accordance with the policies and proposals. |
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