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京津冀协同发展和北京市非首都功能疏解政策实施状况是当前学术界和政府关注的热点。城市功能的分布和互动格局是刻画城市群协同发展和治理策略成效的重要内容。本文在阐述城市群内城市功能之间互动原理基础上,引入偏离—份额分析模型、改进土地生态位模型、扩展引力模型和GIS技术,耦合构建了新的城市功能互动模型。以京津冀城市群为研究对象,基于2010年、2016年、2019年3期POI大数据提取不同类别城市功能区,从时空两个维度揭示京津冀城市群功能的互动格局特征,分析协同发展和北京市非首都功能疏解政策实施状况,并有针对性地提出了治理策略。结论显示：① 2010—2019年间城市群建成区城市功能区总面积增加1.5倍,其中混合功能区增长最快,增加1.7倍;② 北京市工业功能、商业功能正在稳步疏解,但是居住功能、科教文化功能、公共服务功能仍在聚集与强化;③ 廊坊市、唐山市、天津市、保定市等中部城市在非首都功能疏解中发挥了“二传手”作用,成为功能互动的主要驱动城市;④ 石家庄市吸纳的疏解功能主要来源于天津市和廊坊市,具有接力特征;⑤ 京津冀城市群城市功能疏解在治理策略上需要关注功能互动格局演化趋势来进行精准施策。上述结论表明本文构建的城市功能互动模型可以较好地揭示和解释京津冀城市群城市功能互动格局的变化特征。 相似文献
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Journal of Geographical Sciences - The continuous growth of urban agglomerations in China has increased their complexity as well as vulnerability. In this context, urban resilience is critical for... 相似文献
223.
Ski resorts are one of the bases for the development of ice-snow sports and tourism, and they are also a hot topic of social concern. Taking 117 ski resorts in Beijing, Tianjin and Hebei as the research object, geospatial analysis methods such as kernel density and spatial autocorrelation were used to explore the spatial and temporal distribution patterns of the ski resorts. The geographic detector was used to deeply explore the underlying factors influencing the spatial and temporal distribution of ski resorts in terms of policy factors, natural factors and economic and social factors. This study found that the spatial and temporal distribution of ski resorts in the Beijing-Tianjin-Hebei Region showed a significant Olympic event-driven characteristic. From 2009 to 2021, the spatial pattern of Beijing-Tianjin-Hebei ski resorts has changed from “single-core development”, to a “single-core with multi-point” layout, and then to a “multi-core” layout. The spatial pattern has changed from agglomeration to diffusion. Cold and hot spots of the spatial and temporal characteristics in Beijing-Tianjin-Hebei ski resort have shifted from north to south, from the initial suburbs of Beijing to the southern cities of Baoding, Shijiazhuang, Xingtai and other cities in Hebei Province. The spatial and temporal distribution of Beijing-Tianjin-Hebei ski resorts has been influenced by many factors, from “GDP per capita” to “population density” to “policy quantity”, showing a shift from “Economic-driven” to “population-driven” to “policy-driven” processes. 相似文献
224.
Industrial agglomeration is a highly prominent geographical feature of economic activities, and it is an important research topic in economic geography. However, mechanism-based explanations of industrial agglomeration often differ due to a failure to distinguish properly between the spatial distribution of industries and the stages of industrial agglomeration. Based on micro data from three national economic censuses, this study uses the Duranton-Overman(DO) index method to calculate the spatia... 相似文献
225.
运用WRF模式,对京津冀地形触发对流系统与海风锋相互作用的两个个例开展了数值模拟,通过对两个个例模拟的广义湿位涡异常和雷达回波分布的对比分析,对广义湿位涡异常预判该类天气过程中对流系统发展的潜力进行了检验。分析结果显示,广义湿位涡异常较雷达回波提前0.5至1 h示踪到山地背风坡和海风锋处的对流系统的发展。斜压与水汽梯度相互作用和非绝热加热对广义湿位涡异常提前示踪山地背风坡和海风锋处对流系统发展有重要的贡献。过山气流的显著扰动和午后相对于陆地大气较为冷湿的海风辐合上升是分别造成山地背风坡和海风锋出现明显的斜压与水汽梯度相互作用的主要原因。 相似文献