논문 상세보기
pp.412-418
테다소나무의 생장은 포지에서는 산지간에 차이가 없었으나, 조림지에서 30년생에 이르면 수고, 흉고직경, 재적 등 모든 특성에서 산지간 차이가 있었으며 비교수종인 리기테다소나무에 비하여 재적생장이 약 1.3배 정도 우수한 것으로 나타났다. 평균생장은 수고 15.6 m, 흉고직경 25.0 cm, 재적 0.369 m3으로 나타났으며, 특히 Worcester, Greene, Berkeley산지는 0.4 m3이상의 재적생장을 보여 형질이 우수한 산지로 나타났다.
Growth performances of 12 provenances originated from Southeast US were investigated in Wanju, Korea. Pitch-loblolly hybrid pine (Pinus rigida x P. taeda) was planted as comparisons. Analyses of variance for all the growth performances(height, D.B.H., volume growth and slenderness ratio) at the age of 30 were significantly different among provenances. Volume growth of loblolly pine was 1.3 times higher than pitch-loblolly hybrid pine. Latitude and longitude of seed origins were not significantly different with growth characteristics. Growth performances of southern provenances were generally better than those of other provenances. Averages of height, D.B.H. and volume growth were 15.6 m, 25.0 cm and 0.369 m3, respectively. Worcester Mass., Greene Ga. and Berkeley S.C. provenances were proved to be superior provenances, especially average individual tree volume growth of them was over 0.4 m3. A range of slenderness ratio was from 54.4% to 70.4% (average 64.6%). It means that diameter growth was better than height growth in Wanju test plantation. When the top 50% provenances based on the volume growth were selected considering the survival rate, we could expect that genetic gain for volume growth and survival rate would be 12.9% and 9.1%, respectively.
