Abstract
Promoting the redevelopment of inefficient urban land, improving land use efficiency, and optimizing urban spatial layout are important measures to achieve high-quality development. Starting from the definition and connotation of urban inefficient land, this article summarizes the criteria and types of urban inefficient land, the techniques and methods for inefficient land research, the reasons for the formation of urban inefficient land, the existing difficulties in the process of redevelopment, corresponding countermeasures, and redevelopment models. This article summarizes the experience and practice of developed regions, analyzes the deficiencies of related research and looks forward to direction of future research.
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