The establishment of a unified land use classification system is the basis for realizing the unified management of land and sea, urban and rural areas, and aboveground and underground space. In November 2020, the Ministry of Natural Resources of the People's Republic of China issued the Classification Guide for Land and Space Survey, Planning and Use Control of Land and Sea (for Trial Implementation), which aims to establish a national unified land and sea use classification system, lay an

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... tant foundation for scientific planning and unified management of natural resources, rational use and protection of natural resources, and speed up the construction of a new pattern of land and space development and protection. However, there are still some obvious shortcomings in the Classification Guide. This paper analyzes some problems existing in this classification standard from three aspects of logicality, rigorousness and comprehensiveness, and puts forward some suggestions for further improvement. This has important practical significance to better guiding the practice of land use and land resources management, and then to achieving the goal of unified management of natural resources.