Estimations of Forest Stand Parameters in Open Forest Stand Using Point Cloud Data from Terrestrial Laser Scanning, Unmanned Aerial Vehicle and Aerial LiDAR Data

Authors : Adil Enis ARSLAN, Muhittin İNAN, Mehmet Furkan ÇELİK, Esra ERTEN

Pages : 46-54

Doi:10.33904/ejfe.1174123

View : 20 | Download : 8

Publication Date : 2022-12-30

Article Type : Research Paper

Abstract :Two of the very basic forestry parameters, the Breast Height Diameter insert ignore into journalissuearticles values(DBH); and Tree Height insert ignore into journalissuearticles values(TH); are very effective when characterizing forest stands and individual trees. The traditional measurement process of these parameters takes a lot of time and consumes human power. On the other hand, 3D Point Cloud insert ignore into journalissuearticles values(PC); quickly provides a very detailed view of forestry parameters, because of the development of computer processing power and digital storage in recent years. PC data sources for forestry applications include Airborne LiDAR Systems insert ignore into journalissuearticles values(ALS);, Terrestrial Laser Scanning insert ignore into journalissuearticles values(TLS); and most recently the Unmanned Air Vehicle insert ignore into journalissuearticles values(UAV);. In this study, the PC datasets from these sources were used to study the feasibility of the DBH and TH values of a d development stage insert ignore into journalissuearticles values(i.e. DBH > 52 cm in mature stage); oak stand. The DBH and TH estimates are compared with the onsite measurements, which are considered to be fundamental truths, to their performance due to overall error statistics, as well as the cost of calculation and the difficulties in data collection. The results show that the computer data obtained by TLS has the best average square error insert ignore into journalissuearticles values(0.22 cm for DBH and 0,051 m for TH); compared to other computer data. The size of Pearson correlation between TLS-based and on-site-based measurements has reached 0.97 and 0.99 for DBH, respectively.
Keywords : 3D remote sensing, TLS, ALS, UAV, Tree Height, diameter at breast height, forest tree height