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Research On Regional Land Use Structure Changes And Dynamic Simulation

Posted on:2005-07-21Degree:MasterType:Thesis
Country:ChinaCandidate:Y N GaoFull Text:PDF
GTID:2156360122993154Subject:Land Resource Management
Abstract/Summary:PDF Full Text Request
Land use structure system is a nature-society-economic compound system which covers population, resource and economic development and it is character of complex structure, dynamic varised with time of sintering process, high-code nonlinear and multiple feedback, Land use structure system has very much sector and influence factor which has a relation of multiple feedback for one another, which is typical nonlinear relation, so it can not be handled with linear method.In the paper land use structure changes are analyzed by land use structure information value indexes and land use landscape value indexes and the relationship is also established between the indexes and the information factor, the parameters for the establishment of the evaluation index and information factor are connected and are quantitatively analyzed, at the same time, utilizing SD theory to establish land use structure dynamic simulation model further, realizing land use structure dynamic simulation and forecast, realizing systematic automatic management through changing the policy parameter of adjusting control, reaching the function of "policy laboratory" to offer scientific decision basis for the reasonable disposition of land resource.In this paper the system dynamic simulation model is established for the changes of regional land use structure, and the theory, method and practice are studied around the laws of regional land use structure changes. In brief, the follow is mainly covered:1 .the evaluation on temporal and spatial difference of land use structure changes(1) the analysis on land use structure changes(2) the analysis on driving factors of land use structure changes(3) the analysis on the feature and problem of land use structure changes Determining the region through using logic, space and time view region of land usestructure, using multiple appraisement index to diagnose regional land use structure system, discussing the space-time difference of land use structure changes. And on this foundation, using land use structure appraisement result for basis, and the role relation between land use structure change and its factor of influence and its change characteristic is further analyzed to hit solid foundation for the establishment of dynamic simulation model. 2. the establishment of land use structure dynamic simulation model Making the purpose of building model clearly, discussing the feedback mechanism of land use changes, carrying out the analysis of relation between cause and effect, drawing the system construction flow chart, compiling DYNAMO equation (state variable, speed variable, assist variable), building land use structure change dynamic simulation model, andwith the aid of computer software Model Maker, debugging and analyzing model to carry out system dynamic simulation.3.the analysis and assessment on the result of land use structure dynamic simulation Selecting control variable, and regulating parameter continuously, going on the SD model repeatedly, development operation experiment, reaching the different responding effect under a series of different condition, it is finally good to choose 3 kinds of schemes (economic efficient type scheme, coordinate type scheme and the ecological scheme of type of priority). Considering fully the relation between land use structure changes and the essential factor with society, economy and environment, carrying out land use structure change pattern and scene analysis, so, reaching the pattern discrepancy of 3 kinds of schemes to lead decision, offer reference.4. the optimal disposition of land use structure and its political suggestion Through simulating the basic and modified behavior of land use structure and social, economic system for Kunshan city, making scientific forecast and suggestion for the optimization direction for land use structure, and further reasonable countermeasure and policy suggestions are suggested for alleviating the Kunshan city person-land contradiction of increasingly tense.
Keywords/Search Tags:System dynamics, Dynamic simulation model, Land use structure, Strategies, Kunshan city
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