摘要
运用生态位理论和空间自相关方法,建立天山北坡城市群生态位评价体系,测度2003—2013年社会经济维和城市发展维的生态位特征及变化,分析城市群生态位结构形态。结果表明:社会经济维生态位态势梯度大于城市发展维,前者受工业化影响,后者受资源禀赋制约。天山北坡城市群综合生态位呈相对稳定的单极化组团结构,以乌鲁木齐市为核心的乌-昌都市区生态位远高于石-沙-玛、奎-克-乌二级组团,其中乌-昌为单极化组团,后者为多极组团。近十年生态位分布形态及变化趋势基本一致,2013年较2003年热点区域数量更多、范围扩大,核心区呈集聚增强之势,但发展水平参差不齐,其中东部发展优于中西部,特别是乌-昌组团的极化功能及集聚作用愈加明显,城市化进程远远高于其他地区。二级组团也依靠自身资源优势而发展起来,城市群初具形态,城市经济成为推动经济发展的核心动力。
Using niche theory and spatial autocorrelation method, an evaluation system for niche of urban agglomerations on the northern slope of Tianshan Mountains was designed; characteristics and changes of niche in socio-economic dimension and urban development dimension from 2003 to 2013 were measured, and then niche spatial structure of urban agglomerations was analyzed. The results showed that the gradient of niche status and trend in the socio-economic dimension was larger than that in the urban development dimension, the former was affected by industrialization, and the latter was constrained by resource endowment. The general niche of the urban agglomerations on the northern slope of Tianshan Mountains was in a relatively stable unipolar group structure. The niche of the Urumqi-Changji metropolitan area with Urumqi as the core was far higher than that of Shihezi-Shawan-Manasi and Kuitun-Kelamayi-Wusu secondary groups, in which Urumqi-Changji was as a unipolar group, and the latter two as multi-polar groups. In recent years, niche distribution patterns and change trends were basically consistent; hotspots were more and expanded in 2013 compared with those in 2003. The core area showed the trend of agglomeration and enhancement, but the level of development was uneven, with the eastern part being better than the central and western parts. Especially, the role of polarization function and agglomeration in Urumqi-Changji metropolitan area was even more obvious, where the process of urbanization was much higher than in other regions, and secondary groups also relied on their own advantages in resources to develop. Urban agglomeration had roughly formed a scale, and the urban economy became the core motivation to promote economic development.
出处
《生态学杂志》
CAS
CSCD
北大核心
2016年第9期2463-2470,共8页
Chinese Journal of Ecology
基金
国家自然科学基金项目(41361025
41361073)资助
关键词
生态位
空间分析
城市群
天山北坡
niche
spatial analysis
urban agglomeration
northern slope of Tianshan Mountains
