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포지에 (圃地) 있어서 들메나무의 종자발아 및 묘목새육밀도에 관한 연구
정성호,김종원,이근수 ( Seung Ho Chung,Jong Won Kim,Geun Soo Lee ) 한국산림과학회 1984 한국산림과학회지 Vol.63 No.1
This study was carried out to compare the seed germination and seedling growth of Fraxinus mandshurica growing in natural forests of the interior of Korea. Three stimulation methods were used for germination and the seedlings were planted with various densities. The results obtained were summarized as follows: 1) It was suggested that the 80 seedlings per square meter were proper densities for their growth at a nursery bed. 2) Among the three stimulation methods, 19.9% of germination was shown by the moisture storage, 2.3% by cold and warm stratification, and 0.4% by cold stratification. 3) The 8.1% of the total seedlings showed secondary height growth.
중부지방 주요활엽수의 직경성장에 (直徑成長) 관한 조사연구
정성호,최문길,이근수 ( Seung Ho Chung,Moon Gil Choi,Geun Soo Lee ) 한국산림과학회 1983 한국산림과학회지 Vol.60 No.1
This study was carried out to compare the diameter increment of seven major selected tree species which grow wild in middle area of Korea. The results obtained were summarized as follows. 1) The difference in annual diameter increment among seven species according to D.B.H. classes showed to be the strongest in Juglang mandshurica, the second rank Corpus controversa, the third rank Betula platyphylla, the fourth rank Tilia amurensis, the second rank Fraxinus mendshurica, the sixth rank Populus davidiana, and the weakest in Ulmus davidiana. 2) Total diameter increment among seven species according to tree age classes were ranked as follows: Jugbzns mandshurica, Cornus controversa, Betula platyphylla, Tilia amurensis, Fraxinus mandshurica, Populus davidiana, and Ulmus davidiana. 3) Juglans mandshurica showed the highest diameter increment in comparison with other six species, while diameter increment in Ulmus davidiana and Populus davidiana decreased in earlier age than other species.