New software is expected to help foresters in New Zealand, and around the world, to more efficiently harvest logs from increasingly steep plantations.
Rayonier New Zealand's Philip Elworthy explained the new Cable Harvesting Planning Solution (CHPS) to delegates at a forestry geographic information systems conference organised by Scion in Rotorua.
He said some steep terrain harvesting was already taking place in New Zealand, but the bulk of this planting occurred in the early 1990s and would be ready for harvest in the next five to 10 years, creating ``huge challenges'' for harvest planners.
``Harvest planning is working out how to get trees off the side of the hill and on to the back of a truck.''
On this type of land, this is generally done by cable harvesting, where felled trees are lifted on cables to a central hauler that can be cost effectively reached by trucks.
The new software integrates planning software with the most common geographical information system (GIS) in New Zealand to allow planners to model a particular plantation and work out the most effective places to position the hauler and the cables to maximise productivity and minimise environmental impact.