Spatial Optimization Allocation Of Land Use Based On ACO Algorithm

Land is the basic carrier of human production and life.Since the industrialization,the contradiction between land supply and demand has always existed.With the rapid development of China's social economy,our contradiction between the growing demand for land resources and limited supply is also deepening.In this process,urban expansion is the most important driving force,and the problems of land conversion,ecological environment destruction,and inefficient utilization of land use have become more serious.Therefore,which make a scientific land resource optimization allocation plan to achieve sustainable land development has become an urgent problem to be solved.Taking Wuhan City as an example,this paper first analyzes the present situation of land use in Wuhan through three aspects of land use,which are quantity structure,spatial structure and land use transfer matrix.On this basis,it discusses the main problems of land use;Then,based on the natural geographical conditions and socio-economic conditions,the evaluation factors are selected to evaluate the land suitability of agricultural land and construction land in Wuhan.Finally,based on the status of land use and the suitability evaluation,the ant colony algorithm is used to land Space optimized.The main conclusions are as follows:(1)Analysis of the status of land use in the study area in 2015,it was found that the construction land in the area accounts for a large proportion of the total land area,and the proportion of land area such as forest land and grassland is too small.Through the analysis of the land use change degree and land use dynamics,it is found that the growth of construction land area and the reduction of cultivated land area in the study area are faster.Through the land use transfer matrix,it is found that a large proportion of cultivated land is converted into construction land.The water area is reduced,and most of the reduced water area is converted into construction land.(2)By selecting the evaluation index,the principal component analysis method is used to evaluate the suitability of cultivated land,forest,grassland and construction land in the study area.Then grade the evaluation results into three levels.Finally statistic the area of highly appropriate,generally suitable,barely suitable and unsuitable land of various types.The suitability evaluation results will be used as the basis for optimal configuration.(3)With the aim of land suitability and compactness,the model is constructed based on ant colony algorithm,and the land use is optimized in the geographic simulation &optimization system.The results show that the optimized land use mode has advantages in terms of suitability and compactness.