Impact Analysis of urban scale factors on the construction level of"Zero-Waste City"
As urban scales continue to expand,the urgency to discern the pressures on urban solid waste management intensifies.This paper adopted the perspective of"Zero-Waste City"construction,employing the entropy-weighted TOPSIS method to evaluate the construction levels of"Zero-Waste City".Using dynamic panel data from the prefecture-level cities of Fujian Province from 2001 to 2019,it empirically analyzed the impact and heterogeneity of urban scale on"Zero-Waste City"construction through threshold models and the System GMM model.The findings indicated that the construction level of"Zero-Waste City"in Fujian Province had generally improved steadily,albeit with significant regional disparities.Prosperity and technological levels facilitated the construction of a"Zero-Waste City"while a higher proportion of secondary industry markedly impeded it.The impact of urban scale on"Zero-Waste City"construction was nonlinear,exhibiting an"inverted N"curve relationship with three significant interval effects.It suggested that an optimal urban scale was achieved with a permanent population of approximately 4.339 1 million.Therefore,to enhance the construction level of"Zero-Waste City",it was crucial to align with the local development stage,clarify key influencing factors,and discern the levels of urban scale.
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