Changes in the streambank landscape and vegetation recovery on a stone revetment using the image spectrum: Case study of the Nan-Shi-Ken stream, Taiwan

This paper uses images taken before and after the construction of a revetment to study the revegetation of a streambank landscape. The spectrum slopes of these images are determined via the image power spectrum method, and their variations are analyzed and represented by an equation. The proposed equation estimates that vegetation recovery on a stone revetment in the Nan-Shi-Ken stream, Taiwan, would take approximately 5 years. This result is similar to field observations of the establishment of steady-state vegetation cover.