基于分形理论的辽宁城市群人地关系特征时空演变

Spatial-Temporal Evolution of Human-Land Relationship in Liaoning’s City Groups Based on Fractal Theory

针对辽宁城市群发展过程中出现的问题,利用DMSP,VIIRS夜间灯光与城市经济等数据,从城市人口、土地城市化、国民生产总值、社会固定投资等方面构建了异速生长模型与城市经济发展模型,对其人地关系展开了长期的动态研究.对其人口-土地城市化及地级市经济发展水平进行了测度,并做出了针对性评价.结果表明:辽宁城市群的人地关系主要受重工业经济与资源型城市开发影响,其中沈阳城市发展趋向扁平化,而葫芦岛、丹东等城市发展趋向立体化.对于经济发展较好的城市应该防止其城建用地粗放扩张,对于经济发展水平滞后的城市应该创造就业机会,吸引人口聚集.研究结果对于辽宁城市群未来的城市化发展具有一定的参考价值.

In response to the problems in the development of Liaoning urban agglomeration,the allometric growth model and urban economic development model were constructed from urban population,land urbanization,gross national product,social fixed investment,etc.,and a long-term study on the human-land relationship of Liaoning urban agglomeration was carried out by using DMSP,VIIRS night light data and urban economic data.The human-land urbanization and economic development level of prefecture-level cities were measured,and the targeted evaluations were made.The results showed that the human-land relationship of Liaoning urban agglomeration is mainly affected by the development of heavy industry economy and resource-based cities.Among them,the development of Shenyang City tends to be flat,while the development of such cities as Huludao and Dandong tends to be three-dimensional.For cities with better economic development,the extensive expansion of urban construction land should be prevented,and for cities with lagging economic development,the employment opportunities should be created to attract population gathering.The research results have certain reference value for the future urbanization development of Liaoning urban agglomeration.