Subjects: Geosciences >> Geography submitted time 2023-09-27 Cooperative journals: 《干旱区地理》
Abstract：区域空间格局及其形成机制对制定空间发展战略具有理论意义。以甘肃省为例，根据2000、2010年和2020年甘肃省统计资料，运用引力模型和断裂点模型识别区域空间格局，基于地理探测器分析形成机制，进而提出空间发展战略。结果表明：甘肃省空间格局分别为河西走廊一体化发展区、陇中同城化发展区和陇东南协同发展区三大分区。区域空间格局形成的演化机制因地理尺度的差异而不同，20002020年人口发展和经济水平对区域空间格局的形成一直发挥着基础性作用，政策调控则发挥着关键性作用，因子间的共同交互作用推动甘肃省空间格局的形成。从三大分区层面提出河西走廊一体化发展区形成一轴、四圈、陇中同城化发展区形成一核牵引、五极并进、陇东南协同发展区形成四极平行发展的新发展空间思路；省域层面提出手指形高质量空间发展战略，促使甘肃省由增长极模式和点-轴模式的发展阶段转向区域网络极核模式。
Subjects: Geosciences >> Geography submitted time 2023-09-19 Cooperative journals: 《干旱区地理》
Abstract：为了从生态位角度系统研究居住空间的分异状况，基于扩展生态位理论构建了居住生态位评价模型，实证分析了西北内陆中心城市兰州市主城区的居住空间分异。结果表明：（1） 居住空间生态位呈现出以中心繁华城区为核心的高生态位，向外围圈层或扇形逐次递减的分布趋势；居住势既反映了区位的集聚和扩散功能，也体现了区位的过滤和排斥功能；居住态的空间分异一定程度上可以反映居住空间的分异状况，也能体现不同社会经济属性群体在空间上形成的相对地位和空间格局。（2） 居住势、居住态和居住生态位较好的街道往往占据城市的优势区位且历史文化悠久、基础设施完善、公共服务健全、自然人文环境等都较好，特别是有高等学府、科研院所等单位坐落其中，居民的文化程度和收入水平都相对较高；而居住势、居住态和居住生态位较差的街道往往位于城区边缘，区位条件较差、基础设施落后、公共服务薄弱、地形起伏较大且交通不便、自然人文环境等相对较差，居民大都以农转非、棚改户、低保户等低收入群体为主且文化程度普遍较低。最后，提出了调控城市居住空间分异的政策建议。研究结果在丰富居住空间分异理论和研究案例的同时，对西北内陆中心城市的高质量发展具有重要的参考价值。
Subjects: Geosciences >> Geography submitted time 2023-05-17 Cooperative journals: 《干旱区地理》
Abstract： This study attempts to measure the eco-environmental effects of land use transformation in northwest China from 2000 to 2020 based on the perspective of land“production-living-ecological”function. For this, the study employs the eco-environmental quality index and ecological contribution rate model, and comprehensively uses hot-spots analysis tool, Geo-detectors tool, and other methods to discuss the evolution characteristics and differentiation mechanism of eco-environmental quality. The findings of this study show: (1) The“production-livingecological”space in northwest China shows significant spatial differentiation, indicating an increasing trend of production and living space and a decreasing trend of ecological space. (2) The eco-environmental quality index increased from 0.22720 in 2000 to 0.22724 in 2010 and then decreased to 0.22699 in 2020, although the overall eco-environmental quality remained relatively stable. The change in eco-environmental quality exhibited both improvement and deterioration. The improvement of eco-environmental quality mainly depends on the protection of regional ecological space, while the deterioration of eco-environmental quality is that agricultural production land occupies ecological land in pastoral areas. (3) The eco-environmental quality is spatially characterized by“high in the southeast, second in the northwest, low in the middle”. The cold-spots and hot-spots in the evolution of the eco-environmental quality pattern are mainly concentrated in the southeast and northwest regions and have the same spatial distribution as the population and industry in the area. (4) The proportions of ecological land use, normalized vegetation index, and human active index were the leading factor of spatial differentiation of eco-environmental quality; the interactions between the influencing factors mainly include nonlinear enhancement and bifactor enhancement. The internal interaction of natural factors and the interaction between natural factors and socio-economic factors affected the spatial differentiation characteristics of eco-environmental quality in northwest China. The results of this study may provide a theoretical basis for the optimization of the national land spatial pattern and ecological environment protection in northwest China.
Subjects: Geosciences >> Other Disciplines of Geosciences submitted time 2019-09-11 Cooperative journals: 《干旱区地理》
Abstract：随着城镇化的深入发展，收入差距造成的社会阶层分化在城市空间上的分异程度亟需从地理学视角进行检视。通过网络爬虫工具获取兰州市商品住房数据，运用Reardon空间分异方法,研究居住—社会阶层的地理分布特征及其空间分异程度。结果表明：居住—社会阶层的地理分布方面，城关区和七里河区呈现出由中心到外围依次为精英阶层、富裕阶层、中产阶层、低产阶层、贫困阶层的圈层式分布，但存在精英区“侵入”低档住宅圈的现象；安宁区和西固区呈现出以中产、低产阶层为主的混合分布模式。居住—社会阶层的空间分异方面，分异趋势较为显著，七里河区、安宁区和西固区的居住—社会阶层分异明显高于城关区；富裕阶层居住区更倾向于融合，低产阶层居住区则有分异趋势；居住—社会阶层的空间分异随研究尺度的降低变得更为显著。
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