한국산식물의 개화에 미치는 온도기후의 영향

임양재(Yang Jai Yim) 한국양봉학회 1987 韓國養蜂學會誌 Vol.2 No.1

설악산 쌍천 계곡의 황철나무 ( Populus maximowiczii ) 림에 관하여

임양재(Yang Jai Yim),고영애(Yong Ae Koh) 한국식물학회 1984 Journal of Plant Biology Vol.27 No.2

The Populus maximowiczii dominated forest of the Sangcheon ravine, Mr. Seolag, is distributed in the area with the conglemerates substrate, along the ravine stream from 170m to 550m in altitude. Toward the both slopes of the northern and southern peak from the stream side, the zonal distribution of vegetation was recognized; P. maximowiczii forest of Pinus densiflora forest and deciduous broad leaved forest. The pure community of P. maximowiczii with even more 80-98% in relative basal area (aspen basal area/basal area) was found in the ravine area from 360m to 420m in altitude, the optimal ranges in the species and community by two dimensional ordination with thermal and xeric cline axis. The species compete with Pinus densiflora, in the ravine stream side, and with deciduous broad leaved tree species such as Fraxinus rhynchophylla, Prunus sargentii, Lindera obtusiloba, in the mountation slope sides. On the other hand, the ravine vegetation, including the aspen forest, was classified into Pinus densiflora, Pinus densiflora-Carpinus laxiflora, Pinus densiflora-Populus maximowiczii, Populus maximowiczii, Populus maximowiczii-Pinus densiflora, Acer mono-Celtis jessoensis, Acer mono-Fraxinus rhynchophylla, Carpinus laxiflora-Quercus mongolica, Quercus variabilis-Quercus ariena, Quercus ariena, Quercus variabilis-Stephanandra incisa, Picrasma quassioides-Celtis sinensis, Betula davurica-Zanthoxylum schinifolium and Styrax obassia-Lindera obtusiloba association.

한국의 온도기후와 생물의 계절변화

임양재(Yang Jai Yim),임문교(Moon Kyo Rim),심재국(Jae Kuuk Shim) 한국식물학회 1983 Journal of Plant Biology Vol.26 No.2

The phenological phenomena in terms of year day index (YDI) in South Korea were studied. The YDI was proposed here, because the remainer index such as Nuttonson`s index is unadequate for the interpretation on the phenological phenomena of early spring season in southern coastal area. The YDI was calculated by summing daily mean temperature of the yeat days (YD) above physical zero degree in centigrade, based on the data of the Monthly Weather Reports from 1967 to 1980 by the Central Meteocological Office. The pattern of YDI increase with the increase of YD was similar to that of the remainder index such as the Nuttonson`s index. The some YDI distribution maps were made by Yim and Kira (1975), dividing into 30`×40` meshes, in latitude and longitude, on the topographical map(1:500,000) of the Korea Peninsula. According to the year day of different localities flowering dates of Prunus yedoensis and other phenological phenomena in various species delayed about 3.5 day as the increase of 1 degree of latitude, which coincides with the Hopkins bioclimatic law. It was found that the YDI is useful to interprete the phenology of plant and animal species and to select the optimum range of cultivars in South Korea.

중부지방에 있어서 초본군집의 엽면적지수와 (葉面積指數) 건물생산 (乾物生産)

임양재 (Yang Jai Yim) 한국식물학회 1975 Journal of Plant Biology Vol.18 No.3

Dry matter production of herb community in the Central Korea was studied. Generally, the maximum standing crop in the Central Korea can be observed during the period from July through September with somewhat differences between the herb communities of different floristic composition. Differences in standing crop between the communities of similar floristic composition in different regions were insignificant while those between different floristitc community were relatively great, ranging from 308.7 d.w.g/㎡ in Phragmites prosturatus community. It seems that regional difference in standing crop of herb community of the same floristic composition in the Central Korea is greatly influenced by grazing effect rather than any other conditions. The maximum leaf area index(LAI) of different herb communities was observed during the period from July through September, ranging from 3.0 in Plantago asiatica community to 16.0 in Phragmites longivalvis community.

군락상태에 있는 초본식물의 엽온의 (葉溫) 일조변화

임양재 (Yang Jai Yim) 한국식물학회 1974 Journal of Plant Biology Vol.17 No.3

Leaf temperature is complicated with the microclimate and the dry matter production in a plant community. But a daily change of leaf temperature varying by the locality in plant body or plant community is not yet clear. To resolve such a question, following experiment was designed: Helianthus tuberosus L., Glycine max L., Zea mays L., Impomoea batatas Lam., and Cucurbita moschata var. toonas Makino were planted in the different sandy loam, 2m×2m-quadrat, which has a eastern, southern, western and northern edge. In each plot 17-25 plants were planted and the distances between individuals spaced uniformly. And leaf temperature were measured by MR3-C type thermistor from 14th May through 20th August. It is seems that the upper leaf is affected by solar radiation, the lower leaf by released heat from the earth and the middle leaf by the conditions of both zones. Measuring the temperature of a leaf that is on terminal, central, left and right margins and base part, temperature of control plant in a leaf was sloped during about two hours from noon. It is noticeable as a noon sleeping phenomenon.

토양함수량의 (土壤含水量) 조절에 의한 Glycine max. 인공군집의 성장과 총질소량의 변동에 관하여

임양재(Yang Jai Yim),임영득(Young Deuk Rim) 한국식물학회 1971 Journal of Plant Biology Vol.14 No.3

Dry matter production, leaf area growth and total nitrogen changes were studied in Glycine max. soybean communities, which were grown in sandy loam soils controlled to provide various moisture levels, i.e., 5-7%(level 1), 8-10%(level 2), 11-l3%(level 3), 14-15%(level 4), 17-20%(level 5) and 22-24%(level 6). A summary of the results is shown. The maximum dry matter production of leaves, stems and nodules and the maximum leaf area per unit area were at level 5, but the maximum of root dry matter production was at level 4. Total nitrogen content of the soybean plant decreased with growth, but each level of soil moisture content also showed a little difference. Water content of the plant decreased with plant age and soil water deficiency, especially in roots and nodules. Nodule formation increased in proportion to soil moisture content. Total nitrogen content of the soil on which the soybeans grew, increased from 0.23% before sowing to 0.30% at 100 days after sowing. It seems that soil water content acts as a linear factor in the elongation or dry weight increase of shoots and roots until increasing to level 5. Considering the pattern of plant growth through analysis of the shoot and root dry weight ratio, or the photosynthetic organ and non-photosynthetic organ dry weight ratio, the asymptote of plant growth at a high soil water content exceeded that at a low soil water content.

한반도의 몇 삼림형에 따른 임토유기물 축적량의 위도적차이에 (緯度的差異) 대해서

임양재(Yang Jai Yim),임영득(Young Deuk Rim) 한국식물학회 1971 Journal of Plant Biology Vol.14 No.1

Accumulation of soil organic matter and its vertical distribution at different latitudes in peninsular Korea were studied in the soil of four different forest types viz. Pinus densiflora forest, Castanea forest, Quercus acutissima forest and Carpinus laxiflora forest. Among them, accumulation of soil organic matter in Cheju sites, with a mean annual temperature of 15℃, was maximum with increasing latitude, soil organic matter concentration decreased. Considering the relationship between concentration of soil organic matter and some climatic conditions, it seems that concentrations of soil organic matter is a function of annual temperature, especially warmth index or cold index.

한반도의 귀화식물 분포

임양재(Yang Jai Yim),전의식(Eui Shik Jeon) 한국식물학회 1980 Journal of Plant Biology Vol.23 No.3-4

N/A

산오리나무 고립목의 표면적성장에 (表面積成長) 대하여

임양재 (Yang Jai Yim) 한국식물학회 1973 Journal of Plant Biology Vol.16 No.1-2

Six young trees of Alnus tinctoria grown in isolation, each having different growing stage, were selected and the surface area of their roots, stems and leaves was determined. Each of the roots of more than 0.2㎜ in diameter and stems was cut at intervals of l0㎝ and their surface area was calculated with 2πrl from the average diameter(2r) of both sections (upper and lower) by making cylindrical estimation of the cut pieces. The leaf area measured was only one side area, and the volume of cut piece and amount of dry matter of each organ were also measured. The percentage to the surface area of the whole plant body by each organ was 4-12% in root, 7-9% in stem and 69-89% in leaf, respectively. There was relatively a little individual difference. However, the surface area ratios of root and stem showed a slightly increasing tendency while that of leaf decreasing according to the growing stage. The ratio of sum leaf area index(LAIi) was 2.3-4.0㎡/㎡ and that of the surface area index(SAIi) was 0.16-0.33㎡/㎡, respectively. It has been known that the stem surface area(SAI) to the leaf area index(LAI) is within the range of 31-53%, but the SAIi is within the range of 8-11% of the LAIi.

韓國産 植物의 花期에 미치는 溫度氣候의 影響

任良宰(Yang Jai Yim) 한국양봉학회 1986 韓國養蜂學會誌 Vol.1 No.2