• 한국화재소방학회:학술대회논문집
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• 한국화재소방학회 2011년도 춘계학술논문발표회 논문집
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• pp.412-415
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• 2011

본 연구에서는 개엽된 지표 식물이 건조된 낙엽층에 비해 수분함유량이 상대적으로 많은 것에 착안하여 피복율이 증가하고 개엽량이 많아짐에 따라 산불위험성이 낮아진다는 가정을 세워 열방출량 실험분석과 함께 화염높이 등을 비교, 평가하였다. 그 결과, 초본류의 피복율 및 개엽량이 증가할수록 열방출량이 비례적으로 감소하는 경향을 나타내었고 화염높이 또한 현저히 감소되는 결과를 나타내었다. 향후, 본 연구 결과를 바탕으로 봄철 순기별, 지역별 산림 식물의 개엽량을 모니터링하여 산불위험도 및 산불확산예측에 반영해야 될 것으로 판단된다.

• 한국환경과학회지
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• 제15권12호
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• pp.1103-1107
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• 2006

Iris odesanensis Y.N. Lee is one kind of species among 54 endangered plant species designated by the Ministry of Environment in Korea. It is very rare native plant throughout the country. Therefore, this study was conducted to investigate the native Iris odesanensis in Mt. Naeyon for their distribution and ecological characteristics. They were mostly distributed mid-slope of the mountain from 443m to 498m altitude. They were located lower part of valley and provided enough humid condition. They had proper light and humidity conditions as they faced south south west, south south east, and south. They were also located at the places deciduous woody plants were distributed for proper light conditions for spring blooming. Iris flowered to use light at the period before the trees thickly covered with foliage. However this unfavorable light condition caused low percentage as 7.04% of blooming individuals in this study. In herbaceous, Vioia chaerophylloides(Regel) W. Hocker, Carex siderosticta Hance, Erythronium japonicum Decne., Oxalis obtriangulata Max., Hepatica asiatica Nakai, Lilium tsingtauense Gilg et cetera were appeared well. We propose that proper pruning of upper branches of the deciduous trees is needed for suitable light condition of management of native sites.

• 한국습지학회지
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• 제23권1호
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• pp.35-43
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• 2021

도시지역의 강우유출수를 관리하기 위하여 자연기반해법의 LID 및 그린인프라 적용이 늘고 있다. 식물이 LID 시설에 적용되는 이유는 광합성을 이용하여 오염물질 저감효율을 높이고, 시설 내부 오염물질 축적을 줄여 유지관리 기능을 향상시키기 위해서이다. 그러나 LID 시설 내부에서 작용하는 식물의 오염물질 흡입능력의 불확실성으로 인하여 식재 선정시 어려움이 많다. 따라서 본 연구는 도로변, LID 시설 및 조경공간에 식재되어있는 식물의 건물률 및 영양물질 함량을 비교하여 오염물질 제거기작을 분석하기 위해 수행되었다. 실험대상인 7종의 초본류, 관목류 및 교목류의 월별 건물률은 60~90% 범위를 보였다. 초본류 몸체 내 TN 함량은 여름철까지 지속적으로 성장하다가 감소하는 추세를 보였다. 그러나 관목류와 교목류는 초봄과 늦여름에 높은 TN 함량을 보였다. 패랭이를 제외한 LID 시설에 식재된 모든 식물에서 높은 TP 함량을 보였다. 이는 LID의 식물이 인 제거에 효율적이라는 것을 의미한다. 식물별 영양염류 함량은 유입수 농도에 영향을 끼치는 도시환경에 크게 의존하는 것으로 나타났다. 따라서 이러한 결과들은 향후 LID 적용 시 식생 선정에 있어 유용한 자료로 활용 가능할 것으로 판단된다.

• Journal of Ecology and Environment
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• 제34권3호
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• pp.295-305
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• 2011

Many studies have suggested the positive effects of grazing by large herbivorous mammals on seed dispersal, but little is known about how herbivores could affect the fate of ingested seeds. This study examined the effects of seed ingestion by sika deer (Cervus nippon) on seed fate in a temperate grassland established in an urban park long resided by high densities of sika deer. I compared species composition and seasonal traits of seed abundance and maturity in the grassland community with those in deer fecal pellets. In total, 27 herbaceous species were observed, including the predominant Zoysia japonica. Seed phenology and production differed among the three dominant species (Z. japonica, Digitaria violascens, and Hydrocotyle maritima). Pellets contained at least 26 species of herbaceous seeds, and their abundance differed among species. Of the 26 species, 15 were observed in the vegetation at the study site. The peak of seed abundance in pellets for the dominant species appeared 1 month after the peak of inflorescence production (but most of the inflorescences were immature and susceptible to digestion) and consequently corresponded to the peak of mature inflorescence. Because sika deer are likely to ingest seeds at any maturity stage in the grassland and immature seeds are less hardened, ingested immature seeds can suffer great losses. The results suggested that the survival of germable seeds with great losses of immature seeds may be a factor determining which plant species can be successfully dispersed by herbivores.

• 한국산림과학회지
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• 제96권2호
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• pp.151-159
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• 2007

This study was conducted to investigate the effects of thinning on changes in stand characteristics and understory vegetation in a silvopasture practiced Japanese larch plantation in the Research Forest of Kangwon National University, Korea. Three different thinning intensities (64%, 35%, and control) were applied. Before and after thinning, the understory plant species increased its number from 48 (7 tree species, 7 shrubs species, 28 herbaceous species, and 6 woody climbers) to 100 (11 tree species, 15 shrub species, 67 herbaceous species, and 7 woody climbers). Thinning made plants invade easily on the forest floor, and plot A (325 stems/ha) had much higher number of undersory species than those Of plot B (575 stems/ha) and control plot (1,150 stems/ha). In three years after thinning, understory aboveground biomass (kg/ha) of herbs were 523 for control, 1,230 for plot B, and 1,288 for plot A. The canopy coverage had remarkable influence on the understory biomass production, resulting in relatively small amount of herbage production on control plot. The differences were statistically significant between thinned plots and unthinned plot, but there were no significant differences among the thinned plots (p<0.05).

• 한국조경학회지
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• 제25권2호
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• pp.62-72
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• 1997

This study was conducted to find out the hydroseeding timing of several herbaceous plants for the slope revegetation works. Four native plants and five introduced grasses were used for this experiment and were seeded on the cut slopes by hands in April, May, June, September and October. To identify the best seeding timing, germination percentage, ground covering rate, number of tillers and plant heights were investigated. There were wide differences in germination and ground covering rates of native plants are lower than those of cool-season foreign grasses and they show different germination rates according to seeding timing. Among them, Arundinella hirta var. ciliata shows the most apparent germinatin pattern according to seeding timing. 2. Seeding timing : Native plants tend to germinate well in May and June and cool-season foreign grasses in May and September. But Native plants show extremely low germination rates in autumn, so it is necessary to adjust the seeding rates when seeding in autumn. When seeding in May, it will be possible to use native plants-seed-mixture without using introduced foreign grasses. In sum, the best seeding timing of cool-season foreign grasses are May and September, and warm-season foreign grass is May and June. The best seeding timing of native plants seem to be in May and June.

• Journal of Ecology and Environment
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• 제38권4호
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• pp.541-544
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• 2015

We report the status of wetland vascular plant species in Korea including the whole peninsula and its adjacent islands. This analysis was based on database from our previous categorized list. In all, 4,050 taxa have been reported, including 3,769 native and 281 naturalized. Of these, 479 taxa (12%) are considered as wetland vascular indicator species: 240 obligate wetland plants (OBW) and 239 facultative upland plants (FACW). Approximately 31% of those 479 taxa, i.e., 149 taxa, are labelled as aquatic macrophytes. Wetland plants, mostly herbaceous but some woody, inhabit aquatic bodies and wet meadows. Except for two OBW and six FACW taxa, the rest of the plants are summer-green only. The information provided here is valuable for making assessments of wetland ecosystem health, as well as for developing management plans to preserve and restore wetlands and their resident plant species while also creating artificial wetland environments.

• The Plant Pathology Journal
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• 제18권6호
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• pp.301-307
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• 2002

Graft transmission and cytopathological studies of a severe pear disease, pear black necrotic leafspot（PBNLS), were carried out to determine the causal agent of the disease. No evidence was found that a fungal or bacterial pathogen could be the causal agent of the disease. Attempts to transmit the agent by sap-inoculation to other plants including herbaceous hosts failed. How-ever, the pathogen was readily graft-transmitted from symptomatic diseased pears to healthy pears. Graft transmission of the pathogen was also demonstrated by using an indicator plant, PS-95, developed in the laboratory through various grafting methods. Ultrastructural study of the disease revealed the consistent presence of flexuous rod-shaped virus-like particles (VLP) in the symptomatic leaves of both Niitaka cultivar and indicator pear, PS-95. The particles, approximately 12 nm in diameter with undetermined length, occurred in the cytoplasm of mesophyll parenchyma cells. Cells with VLPs also contained fibril-containing vesicles, which are common in cells infected with plant viruses with ssRNA genome. The vesicles were formed at the tonoplast. Based on the symptomatology, the presence of fibril-containing vesicles, and graft-transmissibility, it is believed that the VLPs that occurred on symptomatic leaves of black necrotic leafspot of pear are viral in nature, possibly those of a capillovirus.

• Mycobiology
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• 제50권6호
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• pp.399-407
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• 2022

Endophytic fungi occupy inner plant tissues, which results in various interactions between the fungus and host. Studies on endophytic fungi have been conducted in Korea for over 30 years. This paper summarizes the published results of those studies. The endophytic fungi of approximately 132 plant species in Korea have been studied since the 1990s, resulting in over 118 publications. The host plants featured in these studies comprised 3 species of mosses, 34 species of woody plants, and 95 species of herbaceous plants. At the family level, the most studied plants were members of the Poaceae family, covering 18 species. Regionally, these studies were conducted throughout Korea, but over half of the studies were conducted in Gyeongsangbuk-do, Gangwon-do, and Chungcheongnam-do. Relatively few studies have been conducted in a metropolis such as Seoul. We confirmed 5 phyla, 16 classes, 49 orders, 135 families, 305 genera, and 855 taxa of endophytic fungi, excluding Incertae sedis, whose relationship with others are unknown. Most of the endophytic fungi belonged to Ascomycota (93.2%), and a few belonged to Basidiomycota (3.6%). Since the diversity of endophytic fungi differs depending on the host plant, plant tissue, and distribution region, future studies should be conducted on multiple host plants and in various regions. Future studies on endophytic fungi are expected to broaden, including genomics and taxonomic and ecological studies of secondary metabolites.

• 한국균학회지
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• 제47권3호
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• pp.241-247
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• 2019

2017년 독도의 버섯상 조사를 통해 관속식물인 왕호장근의 기부에 발생한 목재부후균 버섯표본을 수집하였다. 수집된 목재부후균은 배착성으로 자라는 가죽질의 자실체를 형성하였고 자실층은 관공형태를 나타내었다. 또한 균사체계는 위이균사형이며 타원형의 담자포자를 형성하였다. 형태적 특징과 균류바코드 영역 (internal transcribed spacer of rDNA) 분석을 통하여 이 버섯을 Xylodon flaviporus (Berk. & M.A. Curtis ex Cooke) Riebesehl & Langer로 동정하였다. 이 버섯은 독도에서 서식이 확인된 두 번째 종이며, 다년생 초본식물인 왕호장근을 X. flaviporus의 새로운 기주식물로 보고하고자한다.