An investigation of the potential of digital photogrammetry to provide measurements of forest characteristics and abiotic damage

2000

S. 279-288

5 Abb., 2 Tab., 19 Lit.

Unselbständiges Werk

200068674

This paper describes the use of digital photogrammetric techniques in the provision of spatial data on forest canopies. Such data have application in the monitoring of onset and progression of abiotic damage such as windthrow, and as input to predictive models of wind damage. The derivation of digital elevation models and orthophotographs at multiple dates in the lifetime of a forest was tested for a 7 km¬ study site. The spatial variation in the surface roughness of the forest, incorporating canopy and micro-topography effects was derived and measured. A three-dimensional model of the canopy was obtained from multi-date digital elevation data and the results indicate that accurate estimates of canopy height are possible at a fine spatial resolution.