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基于能值理论的长三角沿江城市群生态-经济-社会系统可持续发展态势研究
王大伟, 梁献超, 王潘绣
金陵科技学院 建筑工程学院, 江苏 南京 211169
摘要:
[目的] 对长三角沿江城市群生态—经济—社会系统可持续发展态势进行研究,为该区域生态经济可持续发展提供科学支持。[方法] 基于能值理论构建评价指标和评价体系,分析长三角沿江城市群生态—经济—社会系统的可持续发展态势。[结果] 2017年长三角沿江城市群中29%的城市资源过度开发,外部依赖性强;53%的城市环境负载率低,29.4%的城市环境负载率高;11.7%的城市废弃物循环再生能力低;47%的城市能值交换率低,经济竞争力强;35%的城市能值货币率高,经济产出效率低。上海、苏州单位面积能值密度高,23.5%的城市较低;29.4%的城市人均能值福利低;17.6%的城市人口负载率高;41.2%的沿江城市呈可持续发展态势,58.8%的城市呈过度发展态势。[结论] 2017年沿江城市群自给能力、环境压力、生态质量呈现上游城市强、小、优向中游基本协调,下游弱、高、差的渐变态势。上海、苏南城市经济竞争力强,但产出效率低;苏中、皖中地区除省会城市外其他城市竞争力弱;皖南城市经济发展滞后且呈沿江单边孤立发展态势。上海、苏南城市社会可持续发展优,形成人才、资源强吸引同时存在用地短缺问题;苏中城市较均衡并形成弱吸引;除合肥市、铜陵市外,皖中、皖南其他城市发展滞后,缺乏有效吸引。沿江城市群整体可持续发展态势严峻。
关键词:  长三角  沿江城市群  能值  生态经济  可持续发展
DOI:10.13961/j.cnki.stbctb.2020.04.031
分类号:TU982;X171.1
基金项目:江苏高校哲学社会科学研究重大项目“江苏省扬子江城市群城市空间互动与协同发展机制研究”(2019SJZDA132);国家自然科学基金项目“内陆边境地区门户城市与中心城市耦合的时空特征与动力机制研究”(41701127)
A Study on Sustainable Development of Ecological-Economy-Society System of Urban Agglomeration Along Yangtze River Delta Based on Emergy Theory
Wang Dawei, Liang Xianchao, Wang Panxiu
School of Architecture and Engineering, Jinling Institute of Technology, Nanjing, Jiangsu 211169, China
Abstract:
[Objective] The situation of sustainable development of ecological-econorng-society system of urban agglomeration along Yangtze River delta were studied in order to support the sustainable development of the ecological economy of the urban agglomeration in this region.[Methods] Based on the emergy theory, the sustainable development of nature, economy and social system of urban agglomeration along the Yangtze River was studied. [Results] In 2017, 29% of the ecological resources were over-exploited, with strong external dependencies, 53% of cities had a low environmental load rate while 29.4% of cities had a high environmental load rate, 11.7% of cities had low waste recycling capacity, 47% of cities had low emergy exchange rates and strong economic competitiveness, 35% of cities had high emergy currency rates, with low economic output efficiency, Shanghai and Suzhou cities had high emergy density per unit area, and 23.5% of cities had lower emergy density, 29.4% of the cities had low per capita emergy welfare, 17.6% of cities had a high population load rate, 41.2% of the cities along the river were sustainable, and 58.8% of the cities were in over development situation.[Conclusion] In 2017, the urban agglomerations along the upper reaches of the Yangtze River were characterized by strong self-sufficiency, low environmental pressure, and excellent ecological quality. The urban agglomerations in the middle reaches coordinated with each other. The urban agglomerations in the lower reaches of the river were characterized by weak self-sufficiency, high environmental pressure, and poor ecological quality. Cities in Shanghai City and Southern Jiangsu Province had strong economic competitiveness, but their output efficiency was low. In Central Jiangsu Province and Central Anhui Province, except for provincial capitals, other cities had weak competitiveness. The economic development of cities in Southern Anhui Province laged behind and isolated along the river. The sustainable development of urban society in Shanghai City and Southern Jiangsu Province was excellent, forming a strong attraction to talents and resources, and they also had the problem of land shortage at the same time. The urban social, economic and ecological development of central Jiangsu Province were relatively balanced, but it had a weak attractiveness to surrounding cities. Except for Hefei City and Tongling City, the overall development of cities in central and Southern Anhui Province lags behind, and there was no effective attraction for surrounding cities. The overall sustainable development of the urban agglomerations along the river was still severe.
Key words:  Yangtze River delta  urban agglomerations along the Yangtze River  emergy  ecological economy  sustainable development