School of Economics, Zhejiang Gongshang University, 18 Xuezheng Road, Hangzhou 310018, China.
School of Economics, Zhejiang Gongshang University, 18 Xuezheng Road, Hangzhou 310018, China.
Waste Manag. 2019 Feb 1;84:310-319. doi: 10.1016/j.wasman.2018.12.006. Epub 2018 Dec 11.
Ever increasing municipal solid waste (MSW) is becoming a serious city pollution trouble, extensive studies explored this question from micro demographic factors before. But testing the impact of spatial dependence on MSW from macroeconomic factors with city-level panel data has not received adequate attention it deserves in prior literature, and routinely ignoring spatial dependence is prone to estimation biases. This research utilizes panel data of 285 Chinese cities for the period of 2006-2015 to explore the spatial dependence of the MSW. Employing two elaborate spatial panel models, the empirical result indicates that while road length, tertiary proportion, urbanization rate have significantly accelerated MSW generation, sanitation investment and education level are slightly negatively correlated with MSW generation, and GDP per capita has a mutual improvement relationship with MSW generation instead of inverted U-shape as predicted by Environmental Kuznets curve, which provides a new insight into city planning and environment protection when facing the fierce socio-environmental conflicts. Besides, there obviously exists spatial dependence and convergence phenomenon of MSW generation among China's cities.
不断增加的城市固体废物（MSW）正成为一个严重的城市污染问题，之前已有广泛的研究从微观人口因素方面探讨了这个问题。但是，利用城市层面的面板数据从宏观经济因素测试 MSW 的空间相关性在先前的文献中并没有得到应有的重视，而通常忽略空间相关性容易导致估计偏差。本研究利用 2006-2015 年期间 285 个中国城市的面板数据来探讨 MSW 的空间相关性。采用两种精心设计的空间面板模型，实证结果表明，虽然道路长度、第三产业比例、城市化率显著加速了 MSW 的产生，但环境卫生投资和教育水平与 MSW 的产生呈轻微负相关，人均 GDP 与 MSW 的产生呈相互促进关系，而不是环境库兹涅茨曲线所预测的倒 U 型关系，这为城市规划和环境保护在面临激烈的社会环境冲突时提供了新的视角。此外，中国城市的 MSW 产生明显存在空间相关性和收敛现象。
