토양 산성화 정도에 따른 독일가문비나무 ( Picea abies ) 의 뿌리 발달과 분지형태에 관한 연구 = Root Development end Branching farms of Norway Spruce ( Picea abies ) in the Differently Acidified Forest Soil

다국어 초록 (Multilingual Abstract)

In this study, the annual growth of roots and their branching forms of Norway spruce(Picea abies [L.] Karst.) were analysed to compare the development of their root in the differently acidified forest soils. And there was no significant difference among the stands for the modified roots and the non-modified roots depending on the root branch forms, and however in the most acidified Weidenbrunnen stand, the modified roots, the abnormal root branch form such as fork, gun and rake types were appeared. As a result of the ring of the root, the annual horizontal root growth were 6.3㎝ for Weidenbrunnen and Barbis stands and 9.5㎝ for Ebergo¨tzen stand. The average annual vertical root growth was 4.4㎝, 5.4㎝, and 6.7㎝ for Weidenbrunnen stand, Barbis stand, and Ebergo¨tzen stand, respectively. The cross section area by root distribution at 80㎝ deep showed that the thick and thin roots were evenly distributed in of Ebergo¨tzen stand and the sum of root cross section area was 32.6㎠. In Barbis stand, the thick roots were distributed in the center while the thin roots were comparatively rare. And the sum of root cross section area was 29.2㎠. In Weidenbrunnen stand, only a few thin roots were found, and the total root cross section area was 10.9㎠. The stability coefficient of roots were in the order of Ebergo¨tzen stand(1.04), Barbis stand (0.3), and Weidenbrunnen(0.08) stand. Among the investigated Norway spruce stands, the modified abnormal root branching form and the low root growth appeared in the Weidenbrunnen stand could be attributed by the soil acidification etc.