干旱区地理2012，Vol.35Issue(4)：646-655,10.
基于水资源承载力的干旱内陆河流域城市适度规模研究——以石羊河流域凉州区为例
Appropriate urban scale in arid inland river basin based on water resource carrying capacity:A case of Liangzhou District in Shiyang River Basin
摘要
Abstract
Most of the cities in the arid inland river basin of northwest China are being perplexed by the pioblems of water shortage and inefficient water utilization. Thus the process of urbanization and the city development scale in this region have been restricted by the water shortage and irrational water utilization structure. It is significant and in urgent need to research the urban appropriate scale based upon its water resource carrying capacity as water shortage and fragile ecological environment has been the key factor which restricts the eco-social development of this region. Taking the Liangzhou District of the Wiiwei city located in the Shiyang River basin as the case study, based on available water quantity, water rights and water quality, computing models for urban water resource carrying capacity and for the urban appropriate population scale were established. Then, a model named after the coordination degree evaluation was set up for researching on the relationship between urban appropriate population scale and its actual population, followed by a detailed prediction and analysis on the available water quantity, water allocation, the degree of overloading of water carrying capacity and urban appropriate scale in the future. The results show as follows; the surface runoff in the Liangzhou District changed slightly from 2001 to 2009, however, it dropped evidently compared with that in the 1950s; the degree of overloading of water carrying capacity in the Liangzhou District had been increasing with annual average growth at 4.76% from 2000 to 2009, and the urbanization level was with annual growth of 3.86% at the same time, while the urban appropriate scale had been with negative growth, and this could also be reflected by the index of distance coordination degree between appropriate population and actual one, which was in the transition from Green Zone ( namely slight coordination) to Yellow Zone ( namely being on the verge of disorder) ; in the next twenty years, the average annual growth rate of urbanization would be faster ( at 5. 16% ) , while the growth of the degree of overloading of water carrying capacity would slow down with the average annual growth rate at 2.48% , but the urban appropriate population scale based upon water carrying capacity would also be smaller than the predicted urban population, thus the index of the distance coordination degree would belong to the Double - Yellow Zone ( namely being slight incoordination) . These results indicate that, as for the urban areas in the arid inland river basin of northwest China, reasonable urban development model should be adopted rather than extend the urban city scale with little consideration on the water carrying capacity.关键词
水资源承载力/城市适度规模/协调度分析/石羊河流域Key words
water resource carrying capacity/ appropriate urban scale/ coordination degree analysis/ Shiyang River Basin分类
管理科学引用本文复制引用
石培基,杨雪梅,宫继萍,张光永,魏伟..基于水资源承载力的干旱内陆河流域城市适度规模研究——以石羊河流域凉州区为例[J].干旱区地理,2012,35(4):646-655,10.基金项目
国家自然科学基金项目(40971078) （40971078）
甘肃省青年科技基金计划项目(1107RJYA077) （1107RJYA077）
西北师范大学青年教师科研能力提升计划项目(SKQNYB10034)联合资助 （SKQNYB10034）
