Abstract: This paper delves into the critical issue of optimal planning algorithms for discrete patch verification paths in intelligent assessment of the status of farmland intercropped with trees based on the “sky-space-earth-spectrum” technology.By integrating multi-source data such as satellite remote sensing,drone aerial photography,artificial intelligence knowledge graphs and GIS,this paper proposes three intelligent path planning methods and analyzes their advantages,the methods aim to enhance the efficiency and accuracy of verifying the status of farmland intercropped with trees,providing scientific basis and technical support for natural resource investigation and monitoring,as well as farmland protection.

Key words: forest interplanting in cultivated land, discrete pattern spots, ant colony algorithm, Dijkstra's algorithm, A^*algorithm