河谷型城市兰州中心城区人口规模初步研究  

A PRELIMINARY STUDY ON POPULATION SCALE IN URBAN CENTRE DISTRICTS OF LANZHOU CITY

作　　者：吴文恒[1] 牛叔文[1] 杨振[1] 

机构地区：[1]兰州大学资源环境学院,兰州730000

出　　处：《人文地理》2006年第2期119-123,共5页Human Geography

基　　金：科技部软科学项目(2003DGS3B039);甘肃省发改委项目"甘肃区域水资源承载能力与节水型社会建设问题研究"联合资助

摘　　要：人口容量规模是城市发展的战略性议题,尤其河谷型城市。基于用地空间、水资源及生态环境三个主要影响因素,对河谷型城市人口容量规模的测算途径和方法进行了探讨和总结。以典型河谷型城市兰州中心城区为例,估算了其在该三个因素下的各自适宜人口规模和最大人口规模,进而反映出河谷用地空间对中心城区人口规模的限制作用较水资源及生态环境更为强烈,并根据木桶原理最短边,得出现有条件下适宜人口规模为230.56万、最大人口规模为342.17万的基本结论。Population scale is the strategic problem of urban development, especially valley-city. It includes optimal population scale and maximal population scale. In this paper measuring approach and methods of population scale in the valley-city are probed into and summarized through three key factors： land space, water resources and ecological environment. What＇s more, each of those factors which are necessary to be considered to the valley-city might become the most limited development condition.To the land space, the author mainly analyzes per capita land criteria, and then computes the population scale of land space through total usable land areas. The problem of the water resources in the valley-city is analyzed from two aspects which include city planning and urban water carrying capacity. To the former, the criteria of per capita comprehensive employed water is mainly discussed, and then population scale of water resources might be obtained according to the whole supplied water resources. To the latter, calculable methods of urban water carrying capacity are introduced cursorily owing to the methodological complexity. In succession, approach and methods of population scale of ecological environment are probed into and summarized, furthermore population scale of greenbelt is explained detailedly through per capita urban greenbelt criteria.Taking city proper of Lanzhou as an example, the paper imprecisely calculates its optimal population scale and maximal population scale via those factors respectively. Through calculation of population scale of land space, optimal and maximal population in the city proper of Lanzhou is respectively 2.3 million and 3.42 million; through calculation of population scale of water resources, optimal and maximal population is 3.21million and 5.22 million; and through calculation of population scale of ecological environment, optimal and maximal population is 2.48 million and 6.9 million. The calculation outcome reflects that to the population scale of city proper land space＇s res

关 键 词：河谷型城市 人口规模 兰州中心城区 

分 类 号：K901.8[历史地理—人文地理学]