对于成熟林分，点云阈值分割算法提取的落叶松、油松均高于分水岭分割算法，

For mature stands, threshold segmentation cloud point extraction algorithm larch, pine watershed segmentation algorithm are higher than for young stands, exhibit species differences and a point cloud from the watershed segmentation threshold detection precision high performance tree,

For mature forest fractions, larch and oil pine extracted by point cloud threshold segmentation algorithm are higher than the watershed segmentation algorithm, and for the young forest fraction, the difference between the watershed and the point cloud distance threshold division method tree shows the difference in the high detection accuracy of the tree.

For mature stands, larch and Pinus tabulaeformis extracted by point cloud threshold segmentation algorithm are higher than watershed segmentation algorithm. For young stands, the high detection accuracy of watershed and point cloud distance threshold segmentation method shows tree species difference,<br>