Abstract
We examined a method to estimate soil moisture distribution using airborne laser scanner data. The equipment used in this study can irradiate the laser pulse, and measure not only the distance between the aircraft and the target point but also reflective intensity of pulse wave 1069nm. Since a linear relationship between the laser reflectivity for 1069nm of the soil measured on the different moisture condition under artificial light in the laboratory and the volumetric water content was obtained, we concluded laser reflectivity can be used to estimate soil moisture. The relationship between soil moisture estimated by airborne laser scanner data and those measured on the ground showed good coincident except high water content. Consequently, soil moisture maps were drown by processing the laser reflectivity image obtained by airborne laser scanner data.
