Possibilities to determine biometric parameters using airborne laser scanning data

Mariya Polyakova,Yury Otmakhov,V.V Chepinoga,K.P Ma

doi:10.1051/bioconf/20213800101

Mariya Polyakova, Yury Otmakhov + Show 2 more

Open Access

https://doi.org/10.1051/bioconf/20213800101

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Abstract

The paper brings forward ways to solve the problem of estimating the trunk diameter using data of airborne laser scanning (LIDAR) relevant for forest inventory. At the first stage of studying, it was defined the regularities of tree height and diameter relations for various species, as well as the coefficients of coupling equations of the significance of “height-diameter” relations based on field data. At the second stage, it was calculated the relations of crown parameters (diameter and volume) and the trunk height and diameter at 1.3 m level accounting parameters dependent of species. Based on the estimated and LIDAR data, the resulting calculations of tree diameters were made with 83.2% accuracy. The proposed calculation of the trunk diameter is an important step for further development of an automated algorithm to obtain basic taxation indicators, such as the tree trunk number, height and diameter. The data got by this way can be used for high density forests while cuttings assessment using LIDAR.

Highlights

LIDAR as a relatively affordable modern tool to collect various data at the earth's surface has been widely used to develop and adapt this technique in forest inventory
In contrast to the digital aerial photography, widely used in taxation works, LIDAR is more expensive tool, but the resulted data detail is significantly higher than in aerial photography, in addition, it makes it possible to get both the visible surface of scanned territories or objects, for example, tree crowns, and give an opportunity to get data on invisible surfaces
The foundation to calculate tree diameters is the idea of a relationship between the forest stand taxation characteristics ("height–diameter")

Summary

Introduction

LIDAR as a relatively affordable modern tool to collect various data at the earth's surface has been widely used to develop and adapt this technique in forest inventory. The most relevant aspects of the forest taxation is assessing the trunk height and diameter.

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Results

Conclusion