• Journal of Korean Society of Forest Science
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• v.58 no.1
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• pp.48-53
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• 1982

This experiment was carried out to distinguish between picea abies (L.) Karsten and Picea koraiensis Nak by the method of discriminant analysis which is used the metrical continuous characteristic on current inorphological plant taxanomy. The results are summarized as follows 1) The discriminant function and discriminant region from the experiment are Z(x)=Z($x_1,\;x_2$)=$0.000379x_1+0.004354x_2-0.311061$ or Z(x)=Z($x_1,\;x_2$=$0.000379(x_1-60.442800)+0.004354(x_2-66.185100)$, $$R_1=(x{\mid}0.000379x_1+0.004354x_2-0.311061{\geq_-}0)$$, $R_2$=($x{\mid}0.000379x_1+0.004354x_2-0.311061$ <0). 2) The probability of misclassification based on the above discriminant region is P($2{\mid}1$)=$P(1{\mid}2)$=0.444 therefore the probability of simultaneous misclassification of P($2{\mid}1$) and $P(1{\mid}2)$ is about 44.4%. 3) the probability of misclassification by the discriminant function resulted from the experiment if recorded as high but it is thought that there is a considerable meaning to perceive the probability of confidence about the discrimination better than its precision.

• Journal of agriculture & life science
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• v.46 no.2
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• pp.19-25
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• 2012

This study is an analysis of the initial growth of Adenophora triphylla var. japonica, and the growth of their above- and underground parts by means of shading treatment in order to provide a basic data that can be used in growing A. triphylla var. japonica in mountainous area. As for the rate of sprouting by shading treatment, 25% treatment and control showed the earliest sprouting. The leaf unfolding had the same order as the rate of sprouting. The analysis of the characteristics of growth of above- and underground parts showed that the growth of aboveground parts are excellent in the 25% treatment. 25% treatment were shown to be the longest in the total length of roots and root projection area. Control were discovered to be the most prominent in root surface area, root diameter, and root volume. 75% and 25% treatment in distribution by root diameter showed 72.4% and 69.5% of very fine root(>0.5mm), respectively.

• Journal of the Korean Association of Geographic Information Studies
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• v.27 no.2
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• pp.1-18
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• 2024

This study aimed to identify the optimal street tree planting method to improve the summer thermal environment in Seoul, Republic of Korea. The effects of road direction and street tree planting patterns on urban thermal environments using ENVI-met simulations were analyzed. The 68 scenarios were analyzed based on four road directions and 17 planting patterns. The results showed that tree planting had a reducing air temperature, mean radiant temperature, human thermal sensation (PET and UTCI). The most effective planting pattern among all scenarios was low tree height (6m), wide crown width (9m), high leaf area index (3.0), and narrow planting interval (8m). The largest improvement in the thermal environment was the northern sidewalk of the east-west road. Since this study used computer simulations, the difference from real urban spaces should be considered, and further research is needed through field measurement and consideration of more variables.

• Journal of Forest and Environmental Science
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• v.7 no.1
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• pp.23-34
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• 1990

Based on the topographical and vegetational indicators on sediment movement of Yongcheon River, the movement occurence years were estimated. 1. The cross sectional shapes of deposits in torrential stream are stepped and even-aged forests tend to be established on each step. 2. Generally the older the forest age is, the higher the height of step from the lowest base tend to become. 3. The ages of trees indicate the year when deposition occured, and so may be useful as plant indicator to get chronological information.

• Journal of Korean Society of Forest Science
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• v.111 no.1
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• pp.19-35
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• 2022

In this study, the forest vegetation structure in the Maruguem (ridge line) area from Yuksipryeong to Cheonwangbong, Baekdudaegan, was analyzed using vegetation classification, importance values, species diversity, and NMS. Data were collected using 373 quadrates in a Braun-Blanquet vegetation survey conducted from May to October 2020. Vegetation was classified into nine vegetation units, which were verified using DCA analysis. Vegetation units 1-5, which were grouped by sub-alpine region, showed high importance values, mainly for sub-alpine vegetation, such as Abies koreana, Picea jezoensis, Pinus koraiensis, and Betula ermanii. In Maruguem, which is not high above sea level, importance values for species such as Pinus densiflora and Quercus serrata were high due to the topographical characteristics of the ridge. The A. koreana community (vegetation unit 1-5), which had a relatively high average elevation, had higher species diversity compared with that of other vegetation units. According to NMS analysis, for abiotic environmental factors, there was a positive correlation between vegetation units 1, 2, 4, and 5 and elevation. Overall, this study describes all low-elevation area vegetation (P. densiflora and Lindera erythrocarpa) to high-elevation area vegetation (A. koreana and P. jezoensis) as well as the characteristics of the Baekdudaegan ridge vegetation that did not include valley vegetation.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.41 no.2
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• pp.19-25
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• 2023

This study aimed to analyze the current status of planted trees in Seoul Forest and propose improvement plans to improve the naturalness in the park. A comprehensive survey of the trees in the park was conducted, and the data gathered was used to build a list of planting trees suitable for an urban park. The analysis of the characteristics of landscape trees in Seoul Forest by type was about the presence or absence of leaves, and they were classified into deciduous trees, evergreen trees, deciduous shrubs, and evergreen shrubs, and herbaceous plants such as groundcover plants separately classified. The study found that Seoul Forest had 57 species of native and naturalized trees, with 27 deciduous trees, 35 deciduous shrubs, 15 evergreen trees, and 98 evergreen shrubs. The park also had 472 species of herbaceous plants, totaling 320,000. The majority of planted trees in Seoul Forest were native species, comprising 59% of the total planted trees, while naturalized species made up 41%. Furthermore, the ratio of deciduous trees to evergreen trees was 81% to 19%, with deciduous trees being the dominant species. The evergreen trees showed a similar trend, with a total of 23 species, including 15 native and 8 foreign species, accounting for 65% of native species. In addition, the study identified six common deciduous shrubs, including Forsythia koreana, orbaria sorbifolia var. stellipila, Deutzia parviflora, Rhododendron lateritium, and Spiraea prunifolia var. simpliciflora, which are frequently planted in areas with abundant water. The study also revealed that among the 10 evergreen shrub species, 9 were native and 1 was foreign. The study aimed to classify the species planted in Seoul Forest into native and foreign species and to provide a data-driven plan to encourage the planting of native species. This study offers valuable insights into planting planning and design for urban parks, which is essential for enhancing naturalness, as most studies have primarily focused on usage patterns and satisfaction in urban parks. By promoting the planting of native species, the naturalness of Seoul Forest can be improved.

• Journal of the Korean Wood Science and Technology
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• v.29 no.2
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• pp.133-139
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• 2001

The structures of six flavonoids isolated from heartwood of Prunus sargentii(Rosaceae) were analyzed by Mass and NMR spectrometry. These flavonoids were grouped into dihydroflavonol, flavanone, and flavanone glycoside, and identified as follows : 3,3',4',5,7-pentahydroxyflavanone(taxifolin) as a dihydroflavonol, 5-hydroxy-7-methoxyflavanone(pinostrobin), 4',5,7-trihydroxyflavanone(naringenin), 3',4',5,7-tetrahydroxyflavanone(eriodictyol), 5,7-dihydroxyflavanone(pinoccmbrin) as a flavanone and 7-hydroxyflavanone 5-O-${\beta}$-D-glucopyranoside(verecundin) as a flavanone glycoside.

• Journal of the Korean Geotechnical Society
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• v.31 no.5
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• pp.59-66
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• 2015

This study aimed to analyze germination characteristics of dredged soil collected in Gunsan. This study develops the ecological environment materials for useable green soil that can be used in the stabilization of the dredged slope. In order to analyze the germination characteristics of dredged soil, specimens treated with Bio ameliorant (0, 6%), AC (Amino acid) ameliorant (0, 6%), Sawdust (0, 6%) and loess (0, 50%) were made. Based on the test results, it was found that dredged soils of Gunsan Saemangeum were classified as SM, and poor arboreal growth conditions were necessary to be treated with ameliorants (Sawdust, Bio ameliorant, etc.).

• Korean Journal of Environmental Biology
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• v.21 no.2
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• pp.120-125
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• 2003

For this study grasp coverage condition and forest stratification to various green space, observed air temperature and relative humidity. With this data, coverage condition and air temperature, relative humidity distribution, analyzed relationship of forest rate and air temperature or relative humidity, tree numbers and green volume and humidity by revolution analysis. In this result, higher none is formed artificiality and barren area, lower zone did fores and water area. Relative humidity have corresponding type of air temperature distribution. lower Tone was higher humidity. Different of Idlest type or water area, surround of forest showed relatively higher humidity. Increasing tree numbers or green volume effect higher humidity and this efficiency order of an arbor, subarbor, shrub.

• Proceedings of the Korean Society of Crop Science Conference
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• 2022.10a
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• pp.310-310
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• 2022

백리향은 꿀풀과에 속하는 다년생 식물로 세계적으로 약 100여 종이 자생하는 것으로 알려져 있다. 우리나라에서 자생하는 백리향은 외국 허브인 타임(Thymus vulgaris)과는 형태학적 및 유전학적으로 다르나 시중에서 백리향과 타임 구분 없이 유통되고 있다. 백리향은 가지가 많고 포복성으로 자라는 특성이 있어 지피용 식물로 유용하고 독특한 향기를 지니고 있어 식품 및 향장품용 향료자원으로 활용이 가능하다. 또한, 우울증이나 불면증 등과 같은 신경성 질환 예방에 효과적인 것으로 알려져 있다. 본 연구에서는 국내 자생 향료 식물의 발굴 및 산업화 소재 가능성 검토를 위하여 토종 허브인 백리향을 오대산에서 수집하여 증식한 후 외래종 타임과 특성을 비교하였다. 백리향과 골든레몬타임의 유전형태 조사는 국립수목원 백리향 조사 요령을 참고하여 각 20개체씩 조사하였다. 조사항목은 식물의 높이, 엽신의 형태와 길이 및 너비, 화서 길이와 마디당 꽃 수, 꽃의 길이 등이었다. 오대산 백리향의 식물 높이는 평균 14.3 cm, 엽신 형태는 난형, 엽신 길이는 1.24 cm이었고 꽃의 길이는 0.92 cm, 꽃 수는 35개이었다. 골든레몬타임의 식물 높이는 평균 18.03 cm, 엽신 형태는 타원형, 엽신 길이는 1.06 cm이었고 꽃의 길이는 0.59 cm, 꽃 수는 146개이었다. 백리향과 골든레몬타임의 정유 추출수율은 각각 0.22, 0.08%이었으며 추출된 정유를 GC-TOF의 SPME장치를 사용하여 분석한 결과, thymol, Caryophyllene, linalool, camphor 등이 향기 성분으로 검출되었다.