Earticle

초록

영어

Forest inventory is based on the sampling methods which estimates the population statistic in terms of calculating stand volumes, and so the researches on cost-effective, precise, and convenient method of computing stand volumes are still important issues in South Korea. The aims of this study were to analyze the applicability of point sampling methods by comparing the complete enumeration and square plot sampling and to figure out the number of points per ha for increasing the precision with regard to the density and percentage of sample points. Study area was 9.25 ha with two sub-compartment (4.3 ha and 4.85 ha) and mainly covered by Japanese larch (Larix kaempferi (Lamb.) Carriere) and natural deciduous forests, located in the research forest of Kangwon National University. Point sampling was carried out with 2 and 4 basal area factor (BAF) and the number of points were 134, which were sampled in the grid unit of 30 m × 30 m. Square plots were sampled with 21 plots in the grid unit of 20 m × 20 m. The stand basal area was 22.9 m2/ha and the stand density was 507 trees/ha in complete enumeration. These statistics were similar to the results of using point sampling: 21.1 m2/ha for stand basal area and 509 trees/ha for stand density. However, it was quite different from the results of using square plots: 38.9 m2/ha for stand basal area and 700 trees/ha for stand density. To analyze the density and percentage of point sampling, the number of plots were categorized into five groups based on the 134 plots (100%): 10 plots (7.5%), 20 plots (14.9%), 40 plots (29.9%), 60 plots (44.8%), 100 plots (74.6%). As a result of analyzing the basal area and stand density randomly, the difference occurred when 10 to 20 plots were used, but there was no large difference between 40 and 100 plots. Assuming that the area of forest inventory which conducts in South Korea is generally 5 to 30 ha, the number of sampling points in this study were different from that in the previous studies, and thus, it is considered to be used for the practical use.

키워드

저자

• Yong-Hee Lee [ Division of Forest Science, College of Forest and Environmental Sciences, Kangwon National University ]
• Dae-Sung Lee [ Institute of Forest Science, Kangwon National University ]
• Jung-Kee Choi [ Division of Forest Science, College of Forest and Environmental Sciences, Kangwon National University ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  강원대학교 산림과학연구소 학술대회

• 간기

  부정기

• 수록기간

  2017~2024

• 십진분류

  KDC 526 DDC 634