新陈代谢视角下东北地区城市健康诊断

发布时间：2018-04-15 09:39

本文选题：同化效益 + 异化效益　；参考：《干旱区资源与环境》2016年03期

【摘要】：将城市视作生命有机体,引入城市新陈代谢理念,将城市新陈代谢分解为城市同化作用与城市异化作用,利用DEA模型评价2003、2005、2007、2009和2012年5个时间断面东北地区地级以上城市的新陈代谢同化效率、异化效率;构建城市新陈代谢指数,分析东北地区城市新陈代谢指数的时空特征,诊断东北地区地级以上城市健康状态;利用多元线性回归诊断影响东北地区城市健康状态的因素。得出以下结论:1)东北地区城市同化效率与异化效率呈现逆向发展态势,多数城市的城市化发展向优而其生态环境不断逼近容量阈值;2)东北地区城市健康状态大体呈现由健康向亚健康转变,城市健康水平"群"分布特征愈发显著;3)与城市新陈代谢指数的相关性分析中,社会城市化、能源资源保障的正相关性依次递减;生态本底条件、经济城市化和人口城市化的负相关性依次递减;环境威胁、空间城市化与其显著性不强。
[Abstract]:Taking the city as a living organism, introducing the idea of urban metabolism, decomposing the urban metabolism into the role of urban assimilation and urban alienation,The DEA model was used to evaluate the metabolic assimilation efficiency and alienation efficiency of cities above the prefectural level in Northeast China during 2009 and 2012, to construct the urban metabolic index, and to analyze the temporal and spatial characteristics of the metabolic index in Northeast China.To diagnose the health status of cities above the prefectural level in Northeast China and to diagnose the factors affecting the health status of cities in Northeast China by using multiple linear regression.The following conclusions are drawn: (1) the assimilation efficiency and alienation efficiency of cities in Northeast China are in reverse development trend.The urban health status of most cities in Northeast China is changing from health to sub-health, while the ecological environment is approaching the capacity threshold.In the analysis of the correlation between urban health level "group" distribution and urban metabolism index, the positive correlation between social urbanization and energy resources security decreased in turn;The negative correlation between economic urbanization and population urbanization decreased in turn, and the environmental threat, spatial urbanization and its significance were not strong.
【作者单位】：东北师范大学地理科学学院;
【基金】：国家自然科学基金项目(编号:41271555)资助
【分类号】：F299.27

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