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백순달 한국과학교육학회 1978 한국과학교육학회지 Vol.1 No.1
By getting out from the existing class work with planning and execution in separate form of each class, and the research on each unit: it is suggested that the whole school system should be unified as one unit through the proper restoration, and to aim the maximum effects of education, exalt the specialty of each teacher in the natural science course. Therefore: To select the text and material for the Element science carefully, secure the effectiveness of the study by each particulars of the text, and to establish the model for teaching properly arranged. Through the cooperative system of formational of teaching, to improve the basic knowledge ofthe course by deepening study objectives and separate teaching for each objects. Through the cooperative system, the main issues of the Elementary science course is solved, and by maintaining this method refine the speciality of teacher and rationalize he education operation.
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任良宰,金泰旭,白順達 서울大學校 農科大學 1984 서울대농학연구지 Vol.9 No.2
雪嶽山 地域의 植生構造 및 機能을 把握하기 위하여 綠地自然度(degree of green naturalily, DGN), 一次純生産力과 植物現存量을 推定하였다. 綠地自然度는 地形圖(1:50,000)에 362개의 1km×1km의 mesh를 그은 다음 等級을 査定하였다. 總 362 mesh 중 DGN 8이 全體의 63.8%인 231 mesh를 占하였고 이는 自然林에 가까운 二次林이 大部分인 것을 意味한다. DGN 9인 自然林은 溫量指數에 依해 區分한 惡寒帶地域에 分布하였다. 一次純生産力은 麟蹄, 襄陽, 束草의 氣象資料를 反映하여 Miami model (Lieth 1972, 1973)에 의해 推定하였는 바 東(外)雪嶽, 西(外)雪嶽, 西雪嶽의 값은 各各 1,397, 1,541, 1,518 g/㎡/yr이었고 平均値는 1,455 g/㎡/gr이었다. 雪嶽山 全體의 年間 一次純生産量은 504,405,81 ton/yr이었으며 이를 實際面積으로 換算하면 約 55萬ton이 蓄積되어 가는 것이라 할 수 있다. 雪嶽山의 植物現存量은 25,075,974.8㎥이었으며 이는 다시 約 2,300,000 ton으로 推定할 수 있었다. 그러나 葉量이나 根量이 除外되어 있음을 考慮하면 3,000,000 ton 以上이 蓄積되어 있는 것으로 推定되며 이는 素(C)의 平均停滯 約 55年間인 것으로 推定된다. 한편 Choi & Yim (1984)에 依하면 雪嶽山의 5대 優占種의 順位는 신갈나무 소나무 당단풍나무 졸참나무 서어나무 順이었다. To evaluate the functional feature of Mt. Seolag area, the maps of degree of green naturality. (DGN) and net primary productivity and the estimation of total phytomass were made. DGN map was made by scoring the value of DGN rank in topography map (scale 1:25,000) divided into 362 meshes of Km?? size. In the map, the higher values in DGN rank were found at high elevation area, which is the subarctic zone determined by warmth index isopleth. Of total meshes, 231 meshes (63.8%) were the degree 8 in DGN rank which is secondary forest closed to natural forest vegetation. The net primary productivity was calculated by Miami model (Lieth 1972, 1973) using the data measured at Inje, Sogcho and Yangyang meteorological station . The estimated values of eastern, western and southern Seolag were 1,397, 1,451 and 1,518g/m²/yr, respectively, and the mean of them was 1,455/m²/yr. The amount of annual net primary production in the whole Mt. Seolag was 504,405.81tons/yr obtained by multiplication of net primary productivity and practical land area (plane area x mean inclination of 25 degree: 1/cosine20°). The mean 25°was the value obtained by the analysis of topographic map with 5535 meshes of 250m×250m size mesh. The Phytomass of whole Mt, Seolag area, 25,075,974.8m³, was estimated from the data of sample area (30,250m²). The Phytomass will be over 3,000,000 tons if it would be considered the phytomass increased by the increase of area (converted to practical area)and the one of leaf and root system. It means the accumulated amount of C for 55 years. On the other hand, according to choi & Yim (1984), Quercus mongolica, Pinus densiflora, Acer pseudosieboldianum Quercus serrata, Carpinus laxiflora etc. Were found as dominant species in order of species sequence of Mt, Seolag.
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