“一带一路”沿线之中国新疆—中亚—西亚城市空间扩张

发布时间：2018-07-05 17:35

本文选题：一带一路 + 中国新疆　；参考：《经济地理》2017年05期

【摘要】：基于1992、2002和2012年DMSP/OLS夜间灯光遥感数据,借助GIS技术支持,提取中亚、西亚和中国新疆共25个国家和地区的城市像元,从分大区与分国家和地区的夜间灯光强度的时空变化特征,对沿线城市空间的扩张类型、扩张强度的速率和程度、形态紧凑度方面及其驱动机理进行探究。结果表明:(1)中国新疆和西亚城市空间扩张以外延型为主,中亚以填充型居多;填充型扩张以增强填充型像元为主。(2)三大分区城市以加速型为主要扩张类型,各分区内部具有空间分异性;近20年间城市平均扩张程度中国新疆最强、西亚次之、中亚相对较弱。(3)中国新疆和中亚城市平均紧凑度指数都先增大后减小,西亚城市紧凑度指数变化空间差异性明显且总体城市形态更紧凑。分析认为,自然环境约束、城市化进程、国民经济能力、人口分布趋势、政局稳定性及内部现实发展诉求在不同程度上影响城市空间扩张类型、强度和形态紧凑度变化。
[Abstract]:Based on the night light remote sensing data of DMSP / OLS in 1992 / 2002 and 2012, and with the support of GIS technology, the urban pixels of 25 countries and regions in Central Asia, West Asia and Xinjiang, China were extracted, and the temporal and spatial variation characteristics of night light intensity in different regions and regions were analyzed. This paper probes into the expansion type of urban space along the route, the rate and degree of expansion intensity, the compactness of form and the driving mechanism. The results show that: (1) the spatial expansion of Xinjiang and West Asia cities in China is mainly epitaxial type, the central Asia is mostly filled type, the filling type expansion is mainly enhancement filled pixel type, (2) the acceleration type is the main expansion type in the three major regional cities. In recent 20 years, the average urban expansion of Xinjiang was the strongest in China, followed by West Asia, and relatively weak in Central Asia. (3) the average compactness index of Xinjiang and Central Asian cities increased first and then decreased. The spatial difference of urban compactness index in West Asia is obvious and the overall urban shape is more compact. It is concluded that the restriction of natural environment, the process of urbanization, the ability of national economy, the trend of population distribution, the stability of political situation and the demand of development of internal reality affect the type, intensity and compact degree of urban spatial expansion in varying degrees.
【作者单位】：新疆师范大学地理科学与旅游学院;新疆师范大学丝绸之路经济带城市发展研究中心;
【基金】：国家自然科学基金项目(41361043;41661037)
【分类号】：F125;F299.2

【参考文献】