Speaker
Description
The labor shortage is becoming a growing problem in the European forestry sector. As current data collection techniques rely on field labor, data collection for the purposes of forest road design is more difficult than in the past. For that reason, there is a need to identify more efficient field data collection method. The previous method of field data survey in forest road design process was based on the use of classical survey methods (theodolite and level) and modern survey methods (total station). The mentioned methods provide sufficient accuracy during survey but are time-consuming and required a large number of auxiliary workers. The quantity of collected field data that classical and modern field survey methods enable us to do are incomparable to the quantity of spatial data collected by LiDAR sensors. LiDAR survey could eliminate the problem of labor shortage and the and reduce the time required to collect field data. The aim of the research is to determine the applicability of collecting field data using LiDAR sensors and the influence of vegetation on the results of field measurements in the process of designing and developing the main project for the reconstruction of a forest road. The research was conducted regular forest stand in moderately steep terrain of Republic of Croatia, the main tree species in the research area are: Fagus sylvatica L. and Quercus petraea Liebl.. Two different LiDAR survey method were tested: using an unmanned aerial vehicle (ALS) and airplane (ALSDGU). Based on the collected field data, two versions of the forest road reconstruction main/implementation designs were developed. Total length of reconstructed roads was 44+93.18 hm. Based on the main projects of the researched forest road, the amounts of earthworks required for its reconstruction were calculated. The research determined the level of influence of vegetation on the accuracy of the tested measuring equipment, which provided new insights and guidelines for choosing the most suitable method of collecting field data when designing forest roads.
| Keywords | Forest infrastructure; ALS; TLS |
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