ZHANG Yihan, XU Xiaocong, LIN Shengjie. Urban expansion simulation and analysis based on CA model[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2017,56(3):140-147.
ZHANG Yihan, XU Xiaocong, LIN Shengjie. Urban expansion simulation and analysis based on CA model[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2017,56(3):140-147.DOI:
引入逻辑回归CA模型挖掘城市发展的转换规则,模拟/预测了佛山市的城镇扩张,并采用转移矩阵和景观指数等方法分析城镇化过程。结果表明佛山的城镇化过程侵占了大量的农田、森林和其它(包括果园和池塘等)用地类型。运用 CA进行模拟,其总精度和Kappa系数可达到93.7%和0.86。通过景观指数分析,佛山城市发展将会更为聚集,其最大班块指数增大。在城市优先发展情景下,到2020年将有191 km
logistic regression is introduced to mine the conversion rules of urban development. The rules are input into cellular automata (CA) model to simulate the urban development process of Foshan city. Experiments show that urbanization process is the core part in the development of Foshan city. The source of urban land comes from farmland
forests and other types of land (including orchards and ponds
etc.). In the simulation result
the overall accuracy and Kappa coefficient can reach 93.7% and 0.86
respectively. By using landscape indices
Foshan city will become more and more aggregative with the maximum patch index increase. It was found that there are 191 km
2
of farmland changed into urban land in the scenarios of urban prior development
accounting for 27% of all the farmland (706 km
2
). In the scenarios of farmland protection and forest protection
farmland and forest can be better protected
but urban expansion will occupy other types of land use to solve the problem of lacking enough land use for urban expansion. It is found that the spatial variables have remarkable corridor effect on urbanization by analyzing the relationship between proximity variables and urban land uses.