生态安全约束下环鄱阳湖区城市经济韧性的空间关联网络特征

Spatial Correlation Network Characteristics of Urban Economic Resilience in Poyang Lake Region under the Ecological Security Constraints

经济韧性是社会经济稳定的重要前提,而生态环境往往制约经济韧性的各个维度。构建环鄱阳湖区生态安全约束下城市经济韧性测度指标和方法,并采用社会网络分析对其空间关联网络的结构特征进行分析。结果表明:(1)研究区城市经济韧性表现出先下降后上升的趋势,其空间分布大体上呈现由环湖核心区向环湖外围区递减的环湖分布特征,表明生态安全约束下的湖域地区社会经济稳定性在增强,而空间分布差异显著。(2)研究区城市经济韧性空间关联网络整体特征呈现一主多次的分布格局,成员联系愈加紧密,网络密度呈上升趋势,但中心城市核心地位逐渐减弱,次核心地位逐渐上升,表明生态安全约束下环湖地区城市经济韧性的“核心边缘模式”在逐渐减弱。(3)生态安全约束下环湖地区城市经济韧性空间关联网络具有地域分异特征,并呈现出“抱团取暖”的动态联系规律。

Economic resilience is an important prerequisite for socio-economic stability,while ecological environment often constrains the dimensions of economic resilience.The indexes and methods of measuring urban economic toughness under the ecological security constraint in the circum-Poyang Lake area are constructed,and the structural characteristics of its spatial association network are analyzed by social network analysis.The results show that(1)the urban economic resilience of the study area shows the trend of decreasing and then increasing,and its spatial distribution generally shows the characteristics of circumlake distribution decreasing from the core area to the peripheral area of the circumlake,which indicates that the socio-economic stability of the lake area under the ecological security constraint is increasing,and the spatial distribution varies significantly.(2)The overall characteristics of the spatially linked urban economic resilience network in the study area show the distribution pattern of one main and many times,with the members becoming more closely linked and the network density showing an increasing trend,but the core position of the central city gradually decreases and the secondary core position gradually increases,indicating that the“core-edge model”of urban economic resilience in the lake-ring region under the ecological security constraints is gradually weakening.(3)The spatially linked network of economic resilience of cities in the Lake Ring region under ecological security constraint has the characteristics of regional differentiation,and shows the dynamic linkage pattern of“grouping together for warmth”.