Land policy and land engineering

• Definite the relationship between land policy and land engineering.
• “Land Engineering Subject” and “Concept of land engineering” were first put forward.
• The research four directions of land engineering were defined.
• It is imperative to establish and develop land engineering discipline.

Based on the relationship between land policy and land engineering, we defined the concept of ‘land engineering’ and its contents, and demonstrated the significance of the establishment of land engineering. On the one hand, the land policy guided the development of the land engineering. On the other hand, the land engineering is an important means to improve and execute the land policy. The contents of land engineering are summarized as follows: (1) conversion of non-agricultural land into agricultural land; (2) conversion of low standard use land into a high standard use land; (3) conversion of current land into human construction use; (4) conversion of polluted and damaged land into usable land. Our study provides scientific support for the efficient utilization of land resources.