流域核心-边缘结构模式探讨——以赣江流域为例

流域作为区域经济中的重要地域单元,其总体空间结构规律却一直没有得到系统的归纳与总结。在介绍与评价施坚雅流域核心 边缘结构模式的基础上,对赣江流域空间结构特征与历史演化过程进行了较为深入的实证分析。结果表明,赣江流域可分为核心区、过渡区、边缘区,体现出明显的核心 边缘空间结构特征;山、江、湖,作为构成赣江流域的三大要素,其间存在着内在的时空耦合关系。具体而言,赣江流域最大的河流赣江纵贯流域南北,注入全国最大的淡水湖——鄱阳湖,成为连结上游山区和下游湖区的纽带,山、江、湖彼此相连,息息相关,构成一个互相关联、互为依托的生态大系统。因此,有必要将山江湖作为一个有机整体,不论在生态环境治理上,资源综合开发上,还是在工农业发展布局上,都应统筹兼顾,合理安排,进行全面的、有步骤的综合开发治理和建设。

MODEL OF CORE-PERIPHERY STRUCTURE IN A BASIN: ON CASE IN A GANJIANG BASIN

Regional spatial structure has been studied in depth. But the spatial structure in a basin has not been studied systematically,although basin is one of the important district units for regional economy. This paper introduces the core-periphery structure model of Skinner. Then, the characters and evolutionary progress of spatial structure in Ganjiang River have been analyzed.The results show that the Ganjiang Basin can be divided into three parts as core region, transition region and periphery region. All of these certify that Ganjiang Basin has apparent core-periphery structure.Mountain, river and lake (MRL) consist of the three factors of Ganjiang Basin, and there are close connections between them. Ganjiang river as the maximum river of Ganjiang Basin flows from southern to northern of Jiangxi and infuses Poyang Lake which is the maximum freshwater lake in China. Mountain, river and lake are connected by Ganjiang River as a whole and form an ecological system. So we must take MRL as organic entity and construct it step by step when we harness ecological environment, and exploit resources, and allocate industry and agriculture.