The invention provides a non-
growing season grass and
livestock balance evaluation method based on an unmanned aerial vehicle
LIDAR aerial survey technology. The defect that dry
vegetation and herbivorous animal information cannot be monitored through traditional
satellite remote sensing can be effectively overcome;
grassland balance monitoring is carried out for
grassland in a withered grass period; the method comprises the following steps: classifying
LIDAR point cloud data of the unmanned aerial vehicle based on a
terrain extraction method of slope-angle-distance limitation, and calculatinggrassland
vegetation coverage and
canopy height in a non-
growing season according to ground points and
vegetation points obtained by classification to realize
grassland above-ground
biomass inversionin the non-
growing season; based on an object-oriented and supervised classification method, obtaining parameters such as an available
forage grass proportion and a grassland reasonable
utilization rate, and calculating a theoretical
livestock capacity; calculating the actual
livestock capacity according to the herbivorous animal types, the herbivorous animal quantity and the sheep unit conversion formula of each animal; and finally, according to the theoretical livestock
carrying capacity and the actual livestock
carrying capacity, calculating the overload rate, the available days of the remaining
forage grass and the
forage grass amount needing supplementary feeding, and completing the evaluation of the non-growing season grass and livestock balance condition.