An Algorithm to Simulate the Equilibrium of Land Use Structures - Advanced Research on Computer Education, Simulation and Modeling - page 322

An Algorithm to Simulate the Equilibrium of
Land Use Structures
Xin Wen 1 and Xiangzheng Deng 2,3
1 China University of Geosciences, Beijing, 100083, China
[e-mail]
2 Institute of Geographic Sciences and Natural Resources Research,
Chinese Academy of Sciences, Beijing, 100101, China
3 Center for Chinese Agricultural Policy, Chinese Academy of Sciences,
Beijing, 100101, China
[e-mail]
Abstract. The structure of regional land use is influenced by socioeconomic
factors, including industrial structure, trade environment, economic policies and
institutional arrangements, and these multi-dimensional factors should be taken
into consideration by different departments as part of an open, balanced eco-
nomic system. In this paper we show that an equilibrium algorithm packed into a
Computable General Equilibrium of Land Use Change (CGELUC) model uses
the framework of the Computable General Equilibrium (CGE) to analyze the
factors that influence regional land use types. The analysis is based on macro-
scopic quantitative analysis and reveals relationships between the land use
structure of cultivated land, economic forest, meadow for grazing, and economic
development.
Keywords: Land use, Equilibrium algorithm, CGELUC, CGE.
1 The CGELUC Model
Generally, the CGELUC model is divided into two parts when simulating structural
changes in regional land use, including a thematic quantitative analysis section and an
equilibrium analysis section of regional land area supply and demand. The two parts are
linked by feedbacks from a series of relevant parameters. These are then put into the
equilibrium analysis section, in which supply and demand of regional land areas are
input as exogenous variables. The equilibrium analysis section of regional land use
structure mainly simulates the relationship between land use structure and economic
activity [1].
Thematic quantitative analysis is mainly used to simulate and predict total changes
in developed, water, grassland, woodland and unused land regions. Changes in these
land use areas are then exported under specific scenarios to the equilibrium analysis
section of land area supply and demand, and the influence of exogenous factors (such
as land policy and planning) on regional land use structure is then analyzed. Macro-
economic variables such as production volume, price index and land rent are used as