• 한국연초학회지
• /
• 제22권1호
• /
• pp.51-57
• /
• 2000

The feeding preference of cigarette beetles, Lasioderma serricorne F., was tested using various leaf litters. The number of the trapped L. serricome was 45.25$\pm$10.44 at flue-cured leaf tobacco, Nicotiana tabacum L., 23.50$\pm$6.0 at chinese juniper, Juniperus chinensis L., 1l.75$\pm$4.99 at oak, Qqercus acutissiuma C., and 1l.50$\pm$2.52 at rice-straw, (Oryza. sativa L.). The response of oviposition was 93.20$\pm$26.22 at flue-cured leaf tobacco, 53.60$\pm$11.82 at chinese juniper, 48.20$\pm$20.90 at oriental arborvitae, Thuja orientalis L., 31.80$\pm$18.10 at cherry-tree, Prunus serrulata var. spontanea M., and 29.40$\pm$13.7 at rice-straw. However, the oviposition was respectively low at gingko, Ginkgo biloba L.,(5.40$\pm$2.97), turf grass, Zoysia japonica S., (5.20$\pm$13.7), and oak (3.00$\pm$l.41). The augmentation was maximum at chinese juniper (27.33$\pm$19.44 of emerged adults) followed by Magnolia obovata (8.50$\pm$9.33). Fifty percent of the tested species leaf litters including cherry-tree did not show any augmentation. The adult activities after hibernation were primarily found in May and June at Kwangju and Suwon, and in April at Chungju. The field activity of L. serricome at Suwon was mostly lower than that at other places, except in August at Chungju. The first appearance of L. serricome was observed earlier at Chungju and Kwangju than at Suwon, and the frequency of insect appearance was high in July, August, and September. L. serricome could hibernate by feeding on many kinds of plant leaf litters and it's population could be maintained in the open field in Korea.

• 한국자원식물학회지
• /
• 제22권5호
• /
• pp.389-393
• /
• 2009

수요증가가 예상되는 겨우살이의 인공번식을 위한 기초자료로 활용하고자 겨우살이의 분포지역의 기주수종과 서식지 환경을 조사하여 분석하였다. 겨우살이의 자생지는 전국에 분포하고 있었으며, 기주식물로는 졸참나무와 같은 참나무류가 대부분이였고 밤나무, 벚나무, 오리나무, 돌배나무 등에서 볼 수 있었다. 군락지의 같이 자생하는 침엽수인 소나무, 잣나무와 활엽수인 느티나무, 감나무, 고로쇠나무, 단풍나무, 뽕나무, 은행나무에서는 관찰되지 않았다. 자생지의 고도는 해발 $0{\sim}1200\;m$까지 잘 생육되고 방향과 지형을 가리지 않고 기주식물이 잘 생육 할 수 있는 곳이면 전국에서 재배가 가능할 것으로 판단되었으며, 종자 전파는 조류에 의함이 확인할 수 있었다. 겨우살이의 기생은 흡기 발생부터 기주식물의 표피 또는 조직성분에 따라 영향이 있을 것으로 생각되며 인공재배 연구의 좋은 성과를 위해 겨우살이가 잘 기생하는 기주식물의 기주 특이성에 대한 연구가 이루어져야 할 것으로 사료된다.

• 한국식품조리과학회지
• /
• 제29권1호
• /
• pp.19-28
• /
• 2013

This study was carried out to investigate the quality characteristics and storage of noodle with added flowering cherry fruit powder. Wet noodles were prepared at concentration of 1, 2, and 3% (w/w) of the fruit based on flour weight. Moisture content of the noodles with or without flowering cherry fruit powder was 33.09~33.50%. Ca, K and Mg contents of flowering cherry fruit noodle were increasing at increasing concentrations of flowering cherry fruit powder. Cooked weight, volume, and water absorption decreased with increased fruit powder, whereas turbidity increased. For Hunter's color values of noodles, L (lightness) and b (yellowness) values decreased with increasing concentration of flowering cherry fruit powder, whereas a (redness) value increased. For mechanical characteristics of the noodles, adhesiveness of cooked noodle with flowering cherry fruit powder were higher than those of control. The pH of flowering cherry fruit noodle was lower than that of control during storage. Bacterial counts of wet noodle with flowering cherry fruit powders were lower than those of the control on the 10th day of storage at $5^{\circ}C$. From the sensory evaluation of 20's, texture, taste, and overall preference were not significantly different between the control and the fruit groups, but the color scores of 2% and 3% flowering cherry fruit noodle were significantly higher than that of 1% fruit noodle (p<0.05). In 40's sensory evaluation, color and overall preference scores of flowering cherry fruit noodle were significantly higher than those of control. In conclusion, the results of this study were suggested that the addition of flowering cherry fruit powder in combination with flour was tended to improve antimicrobial effects during storage when compared to control.

• 한국환경생태학회지
• /
• 제38권3호
• /
• pp.293-309
• /
• 2024

본 연구는 도서식물자원인 소사나무의 식물군집구조 분석을 통해 소사나무림의 서식지 외 보전 및 서식환경 등의 기초자료를 제공하고자 수행하였다. 군집구조 분석을 위하여 소사나무가 출현하는 안면도(중장리 산 14-217), 황금산, 가야산(원효봉), 팔봉산을 대상으로 총 27개의 방형구(각 100m²)를 설치 및 조사하였다. 군집분류는 TWINSPAN에 의한 classification 분석을 하였다. 군집분류 결과 소사나무-신갈나무 군락(I), 소사나무-소나무 군락(II), 소사나무-소나무 군락(III), 소사나무-신갈나무 군락(IV), 소사나무-굴참나무 군락(V), 소사나무-잔털벚나무 군락(VI), 소사나무-때죽나무 군락(VII) 등 총 7개의 군락으로 분류되었다. 종다양도는 0.8056~1.1568, 우점도는 0.1214~0.3024이며, 유사도지수는 9.37~36.36%이었다. 군락별 6개 환경인자를 RDA ordination로 상관관계 분석한 결과 제 1축을 기준으로 해발고도, 울폐도, 암석노출도, 경사도가 상관관계를 보였다. 군락 III(소사나무-소나무 군락)과 군락 IV(소사나무-신갈나무 군락)은 주로 해발고도, 암석노출도, 경사도가 식생분포에 영향을 미치는 환경인자로 나타났다. 군락 V(소사나무-굴참나무 군락), 군락 VI(소사나무-잔털벚나무 군락)와 군락 VII(소사나무-때죽나무 군락)은 울폐도가 식생분포에 영향을 미치는 환경인자로 나타났다.

• 식물병연구
• /
• 제22권2호
• /
• pp.81-93
• /
• 2016

식물생장촉진세균은 식물의 생장과 수확량을 촉진하고, 식물병에 대한 유도저항성을 유도하는 것으로 보고되었다. 본 논문에서 연구의 목적은 가로수와 고추의 엽면에 엽권정착 식물생장촉진세균을 처리하여, 식물생장촉진세균의 적용 범위를 확장하였다. 수목의 엽권에서 내생포자 형성 세균 1,056개 균주를 분리하여, protease, chitinase, lipase를 포함한 효소활성과 진균병인 C. graminicola와 B. cinerea에 대한 길항작용을 측정하였다. 1차 선발된 bacilli 14개 균주를 고추의 잎에 살포하여 엽권정착능을 시험하였다. 5B6, 8D4, 8G12 단독처리와 그 혼합처리군을 고추 엽면에 살포하여 생장촉진, 수확량증진, 병방제 효과를 고추 포장에서 관찰하였다. 대량배양을 통하여 선발된 균주를 대한민국 대전광역시 유성구 일대의 가로수에 살포하였을 때, 대조군과 비교하여 엽록소함량과 잎 두께가 증가하였다. 선발된 3개 균주를 수목에 엽면살포했을 때, 벚나무 진균성갈색무늬구멍병을 저해하였고 은행나무의 낙엽생성을 촉진하였다. 종합적으로 본 연구는 엽권정착세균의 엽면살포를 통하여 가로수와 고추의 생장을 촉진시키고, 식물병을 방제하는 엽권정착세균의 적용 가능성을 제시한다.

• 한국환경복원기술학회지
• /
• 제23권2호
• /
• pp.49-67
• /
• 2020

This study was conducted to compare and analyze forest vegetation distributed in Geumosanseong-inside in Geumosan Provincial Park from 2017.10 to 2019.6. The vegetation structure was classified by the phytosociological method and TWINSPAN and the correlation between the community structure and the environmental factors was analyzed using DCCA ordination analydsis. The vegetation structures are Quercus mongolica, Fraxinus mandshurica, Q. acutissima, Larix leptolepis, Prunus padus and Morus alba community by the phytosociological method and 16 communities under TWINSPAN. The importance value of Q. mongolica(64.5) was the highest, and followed by F. mandshurica, L. leptolepis, Acer pseudosieboldianum, M. alba, P. padus, Q. acutissima, Sorbus alnifolia, P. serrulata var. pubescens, F. sieboldiana, Rhododendron schlippenbachii and Castanea crenata which is consistent with species having the dominance status by analysis of the vegetation structure. As the results of DBH analysis for taxon with high importance values, Q. mongolica and M. alba represented normal distribution, and thus, the dominance status of these species is likely to continue. L. leptolepis will maintain the dominance status due to high density of large individuals as compared with species above medium size. However, it will decrease because of high mortality after increase in age class. F. mandshurica and P. padus continue to show dominance status due to high density of young individuals as compared with species above medium size. Q. acutissima have high density of individuals above intermediate size and low density of young individuals, and thus, will maintain the dominance status. A. pseudosieboldianum, F. sieboldiana and R.schlippenbachii which are arborescent will present continuously high dominance status because of high density of young individuals. Soil analysis shows that whereas pH, Ca²⁺ and Mg²⁺ in the research area were lower than the average values of overall forest soil and O.M, T-N, C.E.C and P₂O₅ were higher. We expected that these results were due to agricultures until 50 years ago in Geumosanseong-inside. As a result of DCCA ordination analysis using eleven environmental factors and communities classified by the phytosociological method analysis showed that Q. mongolica was distributed in the environment with higher elevation and O.M and steep slope, and lower P₂O₅, Mg²⁺ and Ca²⁺. In contrast to F. mandshurica, Q. acutissima was distributed in higher K⁺ and lower pH. L. leptolepsis was distributed in various environment.

• 한국자원식물학회지
• /
• 제20권2호
• /
• pp.177-184
• /
• 2007

새로운 기능성 소재를 탐색하기 위하여, 13종의 식용 및 약용식물의 종자추출물을 조제하여 생리활성물질 함량, 항산화활성 그리고 tyrosinase 억제활성을 분석하였다. 총 폴리페놀 및 플라보노이드 함량은 주목에서 각각 $57.51mg{\cdot}g^{-1}$과 $7.98mg{\cdot}g^{-1}$으로 가장 높게 나타났다. 종자추출물의 DPPH 라디칼 소거 활성은 머루$\times$'캠벨얼리' 교배종에서 $RC_{50}$이 $0.03mg{\cdot}ml^{-1}$로 가장 높았고, ABTS 라디칼 소거활성은 고음나무 종자에서 $RC_{50}$이 $0.109mg{\cdot}ml^{-1}$로 가장 높게 나타났다. Ferric thiocyanate(FTC) 방법으로 linoleic acid에 대한 과산화 억제효과를 조사한 결과, 감나무, 고욤나무, 당후박나무, 쪽동백나무, 머루, 머루$\times$'캠벨얼리' 교배종, 묏대추나무, 대추나무의 종자추출물에서 BHT와 유사한 수준의 억제활성을 보였다. 종자추출물의 tyrosinase 억제활성은 감나무, 고욤나무, 탱자나무, 벚나무, 묏대추나무, 대추나무에서만 나타났으며, 특히 고음나무에서 가장 높았다.

• 한국농림기상학회지
• /
• 제7권2호
• /
• pp.148-155
• /
• 2005

An accurate prediction of blooming date is crucial for many authorities to schedule and organize successful spring flower festivals in Korea. The Korea Meteorological Administration (KMA) has been using regression models combined with a subjective correction by forecasters to issue blooming date forecasts for major cities. Using mean monthly temperature data for February (observed) and March (predicted), they issue blooming date forecasts in late February to early March each year. The method has been proved accurate enough for the purpose of scheduling spring festivals in the relevant cities, but cannot be used in areas where no official climate and phenology data are available. We suggest a thermal time-based two-step phenological model for predicting the blooming dates of spring flowers, which can be applied to any geographic location regardless of data availability. The model consists of two sequential periods: the rest period described by chilling requirement and the forcing period described by heating requirement. It requires daily maximum and minimum temperature as an input and calculates daily chill units until a pre-determined chilling requirement for rest release. After the projected rest release date, it accumulates daily heat units (growing degree days) until a pre- determined heating requirement for flowering. Model parameters were derived from the observed bud-burst and flowering dates of cherry tree (Prunus serrulata var. spontanea) at KMA Seoul station along with daily temperature data for 1923-1950. The model was applied to the 1955-2004 daily temperature data to estimate the cherry blooming dates and the deviations from the observed dates were compared with those predicted by the KMA method. Our model performed better than the KMA method in predicting the cherry blooming dates during the last 50 years (MAE = 2.31 vs. 1.58, RMSE = 2.96 vs. 2.09), showing a strong feasibility of operational application.

• 한국농림기상학회지
• /
• 제8권2호
• /
• pp.68-76
• /
• 2006

A thermal time-based two-step phenological model was used to project flowering dates of Japanese cherry in South Korea from 1941 to 2100. The model consists of two sequential periods: the rest period described by chilling requirement and the forcing period described by heating requirement. Daily maximum and minimum temperature are used to calculate daily chill units until a pre-determined chilling requirement for rest release is met. After the projected rest release date, daily heat units (growing degree days) are accumulated until a pre-determined heating requirement for flowering is achieved. Model calculations using daily temperature data at 18 synoptic stations during 1955-2004 were compared with the observed blooming dates and resulted in 3.9 days mean absolute error, 5.1 days root mean squared error, and a correlation coefficient of 0.86. Considering that the phonology observation has never been fully standardized in Korea, this result seems reasonable. Gridded data sets of daily maximum and minimum temperature with a 270 m grid spacing were prepared for the climatological years 1941-1970 and 1971-2000 from observations at 56 synoptic stations by using a spatial interpolation scheme for correcting urban heat island effect as well as elevation effect. A 25km-resolution temperature data set covering the Korean Peninsula, prepared by the Meteorological Research Institute of Korea Meteorological Administration under the condition of Inter-governmental Panel on Climate Change-Special Report on Emission Scenarios A2, was converted to 270 m gridded data for the climatological years 2011-2040, 2041-2070 and 2071-2100. The model was run by the gridded daily maximum and minimum temperature data sets, each representing a climatological normal year for 1941-1970, 1971-2000, 2011-2040, 2041-2070, and 2071-2100. According to the model calculation, the spatially averaged flowering date for the 1971-2000 normal is shorter than that for 1941-1970 by 5.2 days. Compared with the current normal (1971-2000), flowering of Japanese cherry is expected to be earlier by 9, 21, and 29 days in the future normal years 2011-2040, 2041-2070, and 2071-2100, respectively. Southern coastal areas might experience springs with incomplete or even no Japanese cherry flowering caused by insufficient chilling for breaking bud dormancy.

• 한국산림과학회지
• /
• 제110권4호
• /
• pp.496-503
• /
• 2021

소나무는 우리나라 자생수종 중 모든 지역에서 가장 넓은 분포를 보이고 있다. 소나무림의 입지환경 및 임분구조 특성을 구명하기 위해 제7차 국가산림자원조사(2016년~2020년)를 수행하며 얻은 자료를 활용하여 흉고단면적 기준으로 소나무가 50% 이상인 조사구를 대상으로 분석하였다. 총 15,139개 표본점 중 소나무림으로 분류된 원형조사구(400 m²) 수는 3,665개소이다. 소나무림은 해발 600 m 이하의 낮은 지역의 산림에서 가장 많이 나타났다(평균 출현율 25%). 해발 800 m 이상에서는 주로 남사면과 서사면에 분포했고(57%), 해발고가 낮은 지역에서는 모든 사면에 분포하는 경향을 보였다. 소나무림의 토성은 대부분 사양토(33%), 양토(29%), 미사질양토(24%)였고, 양분 수준은 다소 척박했다. 소나무와 함께 중요도가 높게 나타난 수종은 신갈나무, 굴참나무, 졸참나무, 잔털벚나무, 밤나무 등의 순이었다. 소나무, 곰솔, 리기다소나무 등은 소나무림에서 대경급으로 많이 분포하고 있었다. 신갈나무, 굴참나무, 졸참나무, 떡갈나무, 물푸레나무 등은 중경급의 주요 수종이며, 노간주나무와 때죽나무는 소경급으로 많이 분포하고 있었다. 소나무림에서 하층을 주로 점유하는 수종은 진달래, 졸참나무, 생강나무, 쇠물푸레나무, 개옻나무, 철쭉 등의 순으로 나타났다.