Translated Titles

Application of a High-Resolution Digital Surface Model Produced by an Unmanned Aerial Vehicle in Canopy Gap Interpretation and Slope Stability Assessment




黃韋凱(Wei-Kai Huang);丁禕(I Ting);李璟芳(Ching-Fang Lee)

Key Words

UAV ; DSM ; 樹冠孔隙 ; 半自動判釋 ; 邊坡土體穩定 ; unmanned aerial vehicle ; digital surface model ; semiautomatic interpretation ; canopy gap ; slope stability



Volume or Term/Year and Month of Publication

48卷4期(2017 / 12 / 01)

Page #

175 - 187

Content Language


Chinese Abstract


English Abstract

This study establishes a relationship between the density of canopy gaps and slope stability by using a high-resolution digital surface model (DSM) made from images recorded by an unmanned aerial vehicle (UAV) to semiautomatically estimate canopy gap density. Estimated gap density can be employed to identify potentially unstable slopes. The forested slopes adjacent to Xinzhuang Village in southern Taiwan were used as a case study. The estimated canopy gap density is consistent with that of the field investigation. Where the canopy gap density or slope gradient is low, the slope surface is generally undisturbed. Where canopy gaps are dense, tension cracks and scars are often present, bedrock orientation is more erratic, and gullies are more densely spaced on the slope surface. At the Xinzhuang village, a strongly negative relationship was identified between canopy irregularities detected in the DSM and slope instability. Canopy gap density detected with high-resolution DSM may therefore be a useful reference for preliminary slope hazard mapping.

Topic Category 生物農學 > 農業
生物農學 > 森林
生物農學 > 畜牧
生物農學 > 漁業
生物農學 > 生物環境與多樣性
工程學 > 土木與建築工程
工程學 > 市政與環境工程