Urbanization is a process that is undergoing all over the world, which will speed up in the forthcoming years, especially in China as the boom of economy. On average, urbanization level is not only depended on the spe...Urbanization is a process that is undergoing all over the world, which will speed up in the forthcoming years, especially in China as the boom of economy. On average, urbanization level is not only depended on the speed, but theefficiency, particularly efficiency of using land resource which affects urbanization directly. This paper provided status quo of land resource utilization efficiency, indictors, methods and factors, and illustrated the reference of well land utilization, aiming at fostering urbanization in China.展开更多
Although traditional urban expansion simulation models can simulate dynamic features, these models fail to address complex changes produced by different agents＇ behaviors. The paper has built up a set of spatial-temp...Although traditional urban expansion simulation models can simulate dynamic features, these models fail to address complex changes produced by different agents＇ behaviors. The paper has built up a set of spatial-temporal land resource allocation rules and developed a dynamic urban expansion model based on a multi-agent system, which can simulate the interaction among different agents, such as residents, peasants, and governments. This model is applied to simulate urban expansion process taking Changsha City, in China as a study area. The results show that this model can not only reflect basic characteristics of urban expansion, but also help explain the reasons for urban expansion process and understand the effect of agents＇ behavior on the expansion process, and provide insights into the causing factors behind the expansion. In addition, in contrast to simulation results with land use classification map from remote sensing images, the precision of the simulation reached over 68% with higher precision than cellular automata model according to the cell-by-cell comparison. The results suggest that the model can help to provide land use decision making support to government and urban planners.展开更多
Based on the system theory, this paper discusses the structure and efficiency of agricuItural land use in Kaifeng Suburban. Such present problems as benefit deviation from resource al1ocation, distinguished unemployme...Based on the system theory, this paper discusses the structure and efficiency of agricuItural land use in Kaifeng Suburban. Such present problems as benefit deviation from resource al1ocation, distinguished unemployment and four kinds of contribution of urban agriculture land use are revealed. Then, in the view of sustainab1e development, some resolution measures to the problems are advanced out. These suggestions include farmland protection, ecological agriculture, sustainable land use and input decrease of synthetic matter.展开更多
基金Supported the Major Research Plan of the National Natural Science Foundation of China(Grant No.91325302,91425303)
文摘Urbanization is a process that is undergoing all over the world, which will speed up in the forthcoming years, especially in China as the boom of economy. On average, urbanization level is not only depended on the speed, but theefficiency, particularly efficiency of using land resource which affects urbanization directly. This paper provided status quo of land resource utilization efficiency, indictors, methods and factors, and illustrated the reference of well land utilization, aiming at fostering urbanization in China.
基金National Natural Science Foundation of China, No.40771198Hunan Provincial Natural Science Foundation of China, No.08JJ6023
文摘Although traditional urban expansion simulation models can simulate dynamic features, these models fail to address complex changes produced by different agents＇ behaviors. The paper has built up a set of spatial-temporal land resource allocation rules and developed a dynamic urban expansion model based on a multi-agent system, which can simulate the interaction among different agents, such as residents, peasants, and governments. This model is applied to simulate urban expansion process taking Changsha City, in China as a study area. The results show that this model can not only reflect basic characteristics of urban expansion, but also help explain the reasons for urban expansion process and understand the effect of agents＇ behavior on the expansion process, and provide insights into the causing factors behind the expansion. In addition, in contrast to simulation results with land use classification map from remote sensing images, the precision of the simulation reached over 68% with higher precision than cellular automata model according to the cell-by-cell comparison. The results suggest that the model can help to provide land use decision making support to government and urban planners.
基金The project is supported by National Natural Science Foundation of China (No. 49771041 )
文摘Based on the system theory, this paper discusses the structure and efficiency of agricuItural land use in Kaifeng Suburban. Such present problems as benefit deviation from resource al1ocation, distinguished unemployment and four kinds of contribution of urban agriculture land use are revealed. Then, in the view of sustainab1e development, some resolution measures to the problems are advanced out. These suggestions include farmland protection, ecological agriculture, sustainable land use and input decrease of synthetic matter.
