Research on the identification method of inefficient land in Baiyun District, Guangzhou based on multisource data

In the backdrop of swift urban expansion, as urban areas rapidly develop, the management of land designated for construction has emerged as the principal method for managing urban territory. However, this process has led to inefficient utilization of building land, resulting in a considerable quantity of underutilized land that hinders the city's future growth. Consequently, an evaluation index system tailored to local conditions has been established for identifying inefficiently used urban land. This system utilizes multisource statistics to facilitate spatial intersection assessment regarding building land The results indicate that the identification accuracy of inefficiently used land in the study area is 85.265%, this inefficiently used land is primarily concentrated in the central, western, and northern areas within the city. Currently, the city is in the later stages of urbanization, characterized by a slower pace of urbanization but a rising level of economic development.