Coordinated Development of Ecology and Economy of Beijing-Tianjin-Hebei Urban Agglomeration Based on Counties/County-Level Cities/Districts
The rapid development of urban agglomeration in China has brought unprecedented economic prosperity,but al-so caused the serious contradiction between development and protection.How to coordinate ecology and economy of urban agglomeration has become an impending challenge.However,present studies are mainly focused on provinces,regions and municipalities,with few exploring on the county/county-level city/district scale.Taking the Beijing-Tianjin-Hebei urban agglomeration,one of the three major urban agglomerations in China,as an example,we construct an evaluation index system for coordinated development of ecology and economy,and evaluate the coordination level of counties/county-level cities/districts in 2000,2005,2010,2015 and 2018.The re-sults are as follows:First,the economic differences within ur-ban agglomerations are great and the trend of imbalance is in-creasing.The economically developed regions are mainly con-centrated in the prefecture-level municipal districts of Beijing,Tianjin and Hebei,presenting a cluster structure with Beijing and Tianjin as the core and a point structure with several pre-fecture-level municipal districts as scattered points.Second,the overall ecological level of the urban agglomeration deterio-rates first and then optimizes.The high ecological level coun-ties/county-level cities/districts are concentrated in the north-ern part,and then expand to the south.The low ecological level counties/county-level cities/districts are mainly located in the central and eastern part of Beijing,Tianjin and the pre-fecture-level municipal districts of Hebei,and the number de-creases gradually in the middle and late stage of the study.Third,the imbalance level is severe and has not been im-proved,the coordination level of counties/county-level cities/districts near the center of Beijing and Tianjin and the prefec-ture-level city districts in Hebei is generally high.To solve these problems,the following suggestions are put forward,in-cluding building a coordinated regional development mecha-nism,establishing a spatial structure of"large center and mul-tiple clusters",constructing a rational distribution of industrial division,and strengthening ecological development mode and ecological compensation mode.
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