基于无人机的喀斯特退化天坑地下森林树高特征研究
张永永,税伟,冯洁,孙祥,孙晓瑞,刘橼锰,李慧

Tree-height Characterization of Karst Degraded Tiankeng Underground Forests Using Unmanned Aerial Vehicles
yongyong Zhang,Wei Shui,Jie Feng,Xiang Sun,Xiaorui Sun,Yuanmeng Liu,Hui Li
图 3 退化天坑地下森林及地表样方树顶点提取结果局部放大图像
(其中S1、S2为深陷塘地下森林样方,B为巴家陷塘地下森林样方,SG1-3和BG1-5分别为深陷塘和巴家陷塘坑外的地表样方)
Fig.3 Local zoomed-in images of tree vertices extraction results in graded Tiankeng underground forest and surface samples