摘要
依据脆弱性评价的“暴露性-敏感性-适应能力”准则,采用熵权法、加权求和模型、空间回归模型等方法探讨2005—2015年黄土高原地区城市“社会-经济”系统脆弱性的时空特征和影响因素。结果表明:黄土高原地区城市“社会-经济”系统整体属于中度脆弱,并处于良性的发展轨道;不同类型城市的“社会-经济”系统脆弱性呈现差异化的演变特征,资源型城市和大部分城市群的脆弱性下降,省会城市由于极化效应面临着较强的风险胁迫;脆弱性指数自东向西逐渐增强,大地形单元作为自然环境本底对脆弱性分异具有重要影响,脆弱性热点区始终集中在青海省东部的黄土高原沟壑区;脆弱性评价中的适应能力维度对该区域城市“社会-经济”系统脆弱性的影响最为显著,表明当前黄土高原地区城市发展的核心问题已从促进经济增长转化为提高可持续性,突出表现为强化软硬件基础设施建设、提高经济效益、调节城乡不均衡性和降低经济发展的资源环境压力。
According to the “exposure-sensitivity-adaptive ability” criterion of vulnerability assessment,the entropy weight method,weighted summation model and spatial regression model are used to explore temporal and spatial differentiation and influencing factors of vulnerability for urban “social-economic” system in the Loess Plateau from 2005 to 2015.The results show that the urban “social-economic” system in the Loess Plateau is moderately fragile and in a benign orbit. The vulnerabilities of the “social-economic” systems of different types of cities show different evolutionary characteristics. The vulnerability of resource-based cities and most urban agglomerations declines. The provincial capitals face strong risk coercion due to the polarization effect. The vulnerability index in the Loess Plateau has gradually increased from east to west. The large topographic unit as an important part of the natural environment has great significant impact on vulnerability differentiation. The hotspots region has always been concentrated in the Gully area of Loess Plateau in the eastern part of Qinghai Province. From the perspective of vulnerability dimension assessment,it is clearly indicated that the core issue of urban development in the Loess Plateau has been transformed from promoting economic growth to improving sustainability,that is,the construction of both software and hardware infrastructure,improving economic efficiency,regulating urban-rural imbalances,and reducing resource and environmental pressures for economic development.
作者
马蓓蓓
钟堃
李海玲
MA Beibei;ZHONG Kun;LI Hailing(School of Geography and Tourism,Shaanxi Normal University,Xi′an 710119,Shaanxi,China)
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2019年第4期1-8,共8页
Journal of Shaanxi Normal University：Natural Science Edition
基金
国家科技基础性工作专项(2014FY210100)
关键词
城市“社会-经济”系统
脆弱性
时空特征
影响因素
黄土高原
“social-economic” system
vulnerability
spatiotemporal differentiation
influencing factors
Loess Plateau
