Application and prospect of UAV carrying different types of sensors in grassland monitoring
Grassland have dual values in production and ecology,playing an important role in economic develop-ment and ecological environment protection.Unmanned Aerial Vehicle(UAV)technology has become widely used in agricultural and forestry production management due to its advantages of low cost,high precision,and strong timeli-ness.This study collects and analyzes the research situation of UAV equipped with various sensors in grassland moni-toring over the past 20 years,both domestically and internationally.Among these,visible light cameras are the most widely used,providing timely and accurate data on vegetation coverage types and spatial distribution.Multispectral imagers have outstanding performance in vegetation index inversion and biomass,while hyperspectral imagers offer continuous and abundant band data that,when combined with artificial intelligence and big data,enable intelligent grassland monitoring.Thermal infrared imagers are effective in canopy temperature and moisture monitoring.Laser radar performs well in canopy height and vegetation structure.However,challenges remain in the widespread adop-tion of these technologies due to sensor-specific limitations.This paper offers suggestions on the development of UAV design and sensor applications,providing a theoretical reference for addressing the technical bottleneck and ex-ploring future development prospects in grassland monitoring.
NETL
NSTL
万方数据
