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清江流域地处湖北省境内,属于经济欠发达地区,城镇化相对滞后,本文利用GIS技术对其城镇体系的空间结构从垂直和水平的角度进行了量化分析,垂直上分为主城、次主城、卫星城、重点镇和一般集镇,结构为1∶1∶11∶3∶98;水平上以主城和次主城作同心圆;交通上以G209、G318、沪蓉高速、宜万铁路和清江作5km缓冲区分析,缓冲区内集中了49%的城镇,沿清江城镇化率最高为39.1%,而所有交通要素的叠加城镇化率仅为20.7%,偏低。卫星城镇多为县市政府所在地,重点镇仅有3个,显然城镇结构还不合理,应加速重点城镇、次主城和主城的建设。
Qingjiang River Basin is located in the territory of Hubei Province, belong to the economically underdeveloped areas, urbanization is relatively lagging behind. This paper uses GIS technology to quantify the spatial structure of the urban system from a vertical and horizontal perspective, vertically divided into the main city, subordinate City, satellite city, key town and general market town, the structure of 1: 1: 11: 3: 98; level to the main city and the main city for concentric circles; traffic to G209, G318, Shanghai-Chengdu Expressway, Yi Wan Railway and Qingjiang made a 5km buffer zone analysis, with 49% of the cities concentrated in the buffer zone and the highest rate of urbanization along the Qingjiang River being 39.1%, while the superimposed urbanization rate of all transport elements was only 20.7%. Satellite towns are mostly county and municipal governments, with only three key towns. Obviously the structure of cities and towns is not reasonable and the construction of key towns, sub-main cities and main cities should be accelerated.