Delineation of Urban Growth Boundary for the Great Nanchang Metropolitan Area from the Perspective of Coordinated Development
The delineation of urban growth boundary(UGB)can reasonably guide the direction of urban development and effec-tively restrain urban sprawl.From the perspective of coordinated development,this paper combined the multi-objective land use suitability evaluation method and the PLUS model to define the rigid UGB of the great Nanchang metropolitan area and the elas-tic UGB under three scenarios of natural growth,policy constraints and coordinated development.It is found as follows.① The spatial distribution of multi-objective land use suitability presents the characteristics of differences,overlaps and crosses.The overlapping area of the most suitable areas for coordinated development with the most suitable areas of agriculture and the most critical areas of ecological protection has decreased compared with the most suitable areas of urban construction.② The area within rigid UGB is 35 391.03 km2,accounting for 76.11％of the total area of the study area,which can effectively control the urban expansion of the great Nanchang metropolitan area without breaking through the red line of ecological protection and the bottom line of food security.③ The simulation results based on the PLUS model showed that arable land,forest land,grassland and unused land decreased,while water area and construction land increased.The expansion of construction land was the most significant,and urban expansion was effectively constrained under the coordinated development scenario,the elastic UGB under the coordinated development scenario can effectively slow down the occupation of the areas with the highest agricultural or eco-logical value by urban expansion,and can better optimize the urban landscape pattern.The results are helpful to guide and real-ize the sustainable development of the great Nanchang metropolitan area,and can also provide reference for the coordinated de-velopment of production-living-ecology space in other types of cities.
coordinated development goalsPLUS modelurban growth boundarythe great Nanchang metropolitan area
万方数据
维普
