한국환경과학회지 제31권 제6호 (p.479-490)

지상 LiDAR를 활용한 침엽수림의 수고 및 흉고직경 측정

Measurement of Tree Height and Diameter Using Terrestrial Laser Scanner in Coniferous Forests
키워드 :
Terrestrial LiDAR,TLS,Forest inventory,Coniferous forest

목차

Abstract
1. 서 론
2. 재료 및 방법
   2.1. 연구 대상지
   2.2. 연구 장비
   2.3. 현장 조사 및 지상 LiDAR 스캔 공정
   2.4. 통계 분석
3. 결과 및 고찰
   3.1. 수고 및 흉고직경의 측정값 비교
4. 결 론
REFERENCES

초록

This study was to evaluate the utilization of terrestrial light detection and ranging for forest inventory in coniferous forests. Heights and diameter of the stand trees were measured manually using the traditional measurement method and the method using terrestrial LiDAR. The results of two methods were compared and analyzed to evaluate accuracy and feasibility. The terrestrial LiDAR used fixed and handy types to compare the accuracy between different operational methods. Comparative analyses used a paired t-test and Bland-Altman plot analysis. In the case of tree heights, the average of difference between the traditional method and terrestrial LiDAR for each plot was 0.81 m, -0.07 m, and 0.13 m for fixed type; 2.88 m, 1.19 m, and 0.93 m for the handy type. In the case of tree diameter at breast height, the average value of the difference between traditional methods and terrestrial LiDAR for each plot was 0.13 cm, -0.66 cm, and –0.03 cm for fixed type; 2.36 cm, 2.13 cm, and 1.92 cm for the handy type. The values from the method using the fixed type was highly consistent with that using the traditional measurement methods; the average difference was closer to zero. The crown density influences the precision of the height measurement using terrestrial LiDAR in coniferous forests. Therefore, future studies should focus on verifying the a