论文部分内容阅读
空间场能是区域发展“龙头”借助区域联系通道带动外围地区发展的抽象表达,可有效刻画区域发展格局与空间差异。借助ArcGIS软件平台,采用栅格成本加权距离法、k阶数据场等模型,综合测度了长三角经济区区域可达性与空间场能,并揭示了该区域空间场能的空间格局与演变特征。研究表明:①2000年以来,长三角经济区中心城市取得了长足发展,且总体倾于均衡发展;②区域可达性条件不断改善,3 h时间圈的平均通达距离由2000年的81km提高到2008年的122 km;③区域空间场能显著增长且空间分异性显著,分布结构由单核“Z”字型向“多极”网络状形态转变;④长三角经济区空间场能分布格局可适度划分为高场能区、较高场能区、一般场能区、较低场能区、低场能区等5大类型,并呈现出圈层状特征与“两极分化”特征。
The spatial field can be an abstract expression of regional development “leading position ” to promote the development of peripheral areas through regional contact channels, which can effectively characterize the regional development pattern and spatial differences. By using the ArcGIS software platform, using the grid cost weighted distance method and k-order data field, the regional reachability and spatial field energy of the economic zone in the Yangtze River Delta are comprehensively measured and the spatial pattern and evolution characteristics of the spatial energy in the region are revealed . The results show that: (1) Since 2000, the central cities in the Yangtze River Delta Economic Zone have witnessed rapid development, and generally tend to develop in a balanced manner. (2) The regional accessibility conditions have been continuously improved. The average access distance in the 3 h time circle increased from 81 km in 2000 to 2008 Year; the spatial field of the Yangtze River Delta can significantly increase and the spatial heterogeneity is remarkable; the distribution structure changes from single nuclear “Z” to “multipolar”; ④The spatial field energy of the Yangtze River Delta Economic Zone The distribution pattern can be appropriately divided into five types of high-field energy area, high field energy area, general field energy area, low field energy area, low field energy area and the like, "feature.