present work incorporates environmental restrictions in the planning
of the forest roads with the objective of carrying out these operations
in an efficient way, without harming the "sustentation of the
ecosystem". However, it is convenient to point out that the
degree of vulnerability of the environmental components is analyzed;
only keeping in mind two aspects that are the terrain sensibility
and the potential impact of the hydrological network. For such effects,
the chosen area is the property Voipir of the Forest Company Voipir,
located in the IX Region, county of Villarrica. The approximate
surface of the property is of 3218 hectares.
potential degradation sensibility of the forest land is estimated
by the method proposed by Gayoso and Acuña (1999) which classifies
the sensibility in one out of five levels: very low, low, moderate,
high and very high, derived upon the parameter as density, depth,
slope and humidity of the soil.
methodology used to estimate the potential impact on the hydrological
network belongs to the Forest Service of the United States (USDA),
which proposes a series of comparative indicators. The indicators
used in this work are "Stream channel proximity" and "Predicted
stream crossings". In both methodologies, the results were
obtained starting from the development of a Geographical Information
the terrain sensibility was determined and the areas to protect
were defined, a proposal road network using the step method, which
includes the entire property and an alternative to this proposal,
in the sectors that at the moment have plantations.
proposed road network was evaluated environmental and economically.
In environmental form, according to the longitude of roads in areas
of different sensibility and economically regarding the cost of
mass haul. The mass haul was calculated by the software ROADENG.
was concluded that the planning of forest roads under environmental
restrictions prevents the potential problems subject to its localization,
construction and maintenance, in relation to the impacts on the
terrain and the hydrological network.
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