摘要
以多时相Landsat系列遥感影像为数据源,通过选取最优波段组合,采用监督分类方法提取城乡建设用地。综合运用景观格局指数、城乡建设用地扩展测度指数法、象限方位分析法以及GIS空间分析法,从景观格局演化、时空规模动态、空间分异特征以及扩展模式更替4个层面揭示就地城镇化下晋江市城乡建设用地时空演变规律。研究结果表明:1)1996—2016年晋江市城乡建设用地在景观中的优势度逐渐显现,内在连通性不断提高,边界形态逐渐规则化,空间上呈现出聚集连片的发展趋势;2)1996—2016年晋江市城乡建设用地规模不断增加,扩展速度和扩展强度不断提高;3)晋江市城乡建设用地扩展主要以北、东北和正南方位扩展为主,其扩展速度分别处于高速扩展和快速扩展;4)晋江市城乡建设用地增长方式以边缘式扩展为主,填充式和飞地式扩展为辅,但边缘式扩展规模呈现下降趋势,填充式扩展规模则表现出上升趋势,城乡建设用地利用更趋于集中化。
In this study,the four sets of Landsat TM/ETM+/OLI/TIRS image was adopted as the main data source,the optimum wave ranges were selected,and the supervised classification method was chosen to extract the urban and rural construction land.Then the landscape pattern index,the urban and rural construction land expansion measurement index,the quadrant analysis method and GIS spatial analysis method were adopted to analyze the spatial-temporal evolution of urban and rural construction land in in-situ-urbanization areas in Jinjiang City from the aspects of the landscape pattern change,the spatial-temporal variation,the spatial differentiation characteristics,and the expansion mode evolution.The results showed that:(1)from 1996 to 2016,the urban and rural construction land in Jinjiang had gradually become the dominant landscape,the inner connectivity had been increasing,the boundary shape had become regular,and showed a trend of aggregated distribution;(2)the area of urban and rural construction land had been increasing with high expansion speed and intensity;(3)the expansion direction was mainly towards the north,the northeast and the south;(4)the expansion mode of the urban and rural construction land was mainly edge-expansion,followed by infilling and outlying expansion.However,the scale of edge-expansion had been declining,and the scale of infilling expansion had been rising,which meant that the use of urban and rural construction land tended to be more concentrated in Jinjiang City.
作者
杨义炜
刘辉
付银
YANG Yiwei;LIU Hui;FU Yin(College of Environment and Resources,Fuzhou University,Fuzhou 350000,China)
出处
《贵州科学》
2020年第3期50-58,共9页
Guizhou Science
关键词
城乡建设用地
就地城镇化
晋江市
时空演变
urban and rural construction land
in situ urbanization
Jinjiang City
spatial-temporal evolution
