Abstract: A method for remotely analysing trees present in environment, including: obtaining LiDAR dataset of environment; detecting tree(s) represented in LiDAR dataset using pre-trained graph neural network, wherein tree(s) is assigned unique identifier upon detection; identifying trunk of tree(s) using statistical technique(s); determining directional vector of trunk of tree(s) using linear fitting technique(s); determining diameter of trunk of tree(s) at predetermined height from highest point of ground surface surrounding trunk, wherein directional vector is employed for determining diameter of the trunk; and predicting age of tree(s), based at least on diameter of trunk.