Based on four phases of TM images acquired in 1990TM images acquired in , 1995TM images acquired in , 2000TM images acquired in and 2005 paper took Kitakyushu in Japan as a case study to analyze spatial change of land use landscape and corresponding effects on environmental issues guided by landscape ecology theory in virtue of combining technology of Remote Sensing with GIS. Firstly, land use types were divided into 6 classes (farmland, mountain, forestland, water body, urban land and unused land) according to national classification standard of land use, comprehensible ability of TM image and purpose of this study. Secondly, following the theory of landscape ecology analysis, 11 typical landscape indices were abstracted to evaluate the environmental effects and spatial feature changes of land use. Research results indicated that land use has grown more and more diversified and unbalanced, human activities have disturbed the landscape more seriously. Finally, transfer matrix of Markov was applied to forecast change process of land use in the future different periods, and then potential land use changes were also simulated from 2010 to 2050. Results showed that conversion tendency for all types of land use in Kitakyushu into urban construction land were enhanced. The study was anticipated to help local authorities better understand and address a complex land use system, and develop improved land use management strategies that could better balance urban expansion and ecological conservation.

�According to connotation and framework of sustainable development in urban economy -resource -environment, this study proposes a novel system dynamics model to deal with an issue of economy development in Chongqing of China restricted by depletion of resource and degradation of environment, by means of fundamental theory and methodology of system dynamics. Eight subsystems are involved in the model, which denote population, GDP, technology in production, labor input, capital input, renewable resource, nonrenewable resource and environment. To compare different policies with regard to their potential economy-resource-environment impacts, alternative scenarios are used by adjusting the parameters within the model and changing the specification of some variables. The results are elucidated as follows: the current economyresource -environment system of Chongqing is not sustainable; the substitution rate of technology for resource is low and environment pollution becomes serious as a function of increasing output; a way to realize sustainable development of Chongqing is to optimize its economic development mode. Key words: System dynamics model, economy, resource, environment, Chongqing in ChinaUrban economic growth is a complicated process that is mainly determined by interaction between resource depletion and environment pollution in space and time at different scales 1,2) . Modeling is a valuable way to understand such a process [3][4][5][6] . To date, a variety of approaches have been developed to model a spatial process of urban development, including potential models 7) , IPAT model and quantitative economics method 8) , system optimization and mathematical modeling thinking 9) , as well as spatial logistic regression 10) . These models can only forecast development change in the future. However, there still lacks of explicit models for dynamic growth of urban economy that can not only effectively trace urban development in the past, but also predict possible growth scenarios in the future so that some related urban planning policies can be examined.Recently, it has been of attractive interest to spread the applications of system dynamics (SD) models in urban development and integrated sustainable management systems [11][12][13][14] . In an international comprehensive view, studies on urban SD model can be summarized as three core issues.

�In order to assess the health level of an urban ecosystem, this paper has brought forth a set of relatively integrated assessment indices from three typical respects of urban ecosystem -structural function, ability of sustainable utilization, and dynamic change, and then endowed weight to these indices by entropy weight method to establish an assessment model of fuzzy mathematics.Firstly, the situation of urban ecosystem health in Chongqing as a study case was comparatively assessed with those of other three cities-Beijing, Tianjin and Shanghai. Assessment results indicated that the four cities were situated at sub-healthy state; the integrated level of urban ecosystem health decreased in the following sequence: Shanghai, Beijing, Tianjin, Chongqing. Secondly, yearly dynamic change assessment of ecosystem health of Chongqing from 2001 to 2004 was also carried out. Results showed that condition of urban ecosystem health was developing from sub-healthy state to healthy state. Finally, the paper investigated the present conditions of ecosystem health levels of nine districts in Chongqing Metropolis and listed a decreasing sequence of the integrated level of ecosystem health as follows: Yubei, Nan'an, Yuzhong, Banan, Jiulongpo, Jiangbei, Shapingba, Dadukou, Beibei.

With increasing of serious environment problems and the coming of the aging society, new traffic systems should be urgently rebuilt. It is necessary to evaluate the traffic service level by utilizing new technique and tool. This paper takes Kitakyushu city as case study to carry out an evaluation of urban traffic system. The concept of accessibility and mobility is used to evaluate the present condition of existing public traffic system based on GIS technology, and then establishment of new route is discussed according to the evaluation results. Additionally, this paper established GIS database and illustrated the relationship between the public traffic and population density. The regions without enough existing traffic were identified. Moreover, the essential terms and considerations were put forward to simulate a new route of public traffic line.