Entwurf eines optimalen Seillinienlayouts für die Holzernte in steilem Gelände

Abstract

Cable-based technologies are a backbone when designing harvesting systems for steep slopes. However, layout and placement of the cable roads are challenging. To guarantee that harvesting costs are minimized and that the process has the least environmental impact on the remaining forest, one must carefully locate both cable towers and cable roads. Our study objectives were to 1) develop an approach of mixed integer linear programming for planning an optimal harvesting and cable road layout and 2) test this methodology on a specific site, then observe its behaviour with single- and multi-objective alternatives and evaluate its practicality. In doing so, we determined that fitting the model to terrain units up to 35 ha provided the best results and within a reasonable timeframe. The approach presented here is the first to consider both environmental and economic objectives, and can determine the optimal cable road layout within the shortest time.