• Korean Journal of Plant Taxonomy
• /
• v.44 no.2
• /
• pp.84-87
• /
• 2014

A new species, Viola breviflora Jungsim Lee & M. Kim is named and described from Mt. Seogbyeongsan, Gangwondo Province, Korea. The Viola breviflora shares several characteristics (acaulescent leaves, white flowers, pubescent leaf blades and petioles, etc.) with its related species V. keiskei Miq., but is distinct from V. keiskei which has cordate leaf shapes, deep-cordate leaf bases, long pedicels, few flowers, shapeless rhizomes, green fruits, and low altitude habitats by having ovate leaf shapes, shallow-cordate leaf bases, short pedicels, many flowers, Lshape rhizomes, purplish green fruits, and high altitude habitats.

• Korean Journal of Environment and Ecology
• /
• v.7 no.2
• /
• pp.164-171
• /
• 1994

To investigate the structure of natural forest at Nature Conservation Area in Tokyusan National Park, 29 plots (400$m^2$) set up with random sampling method. Four groups were classified by cluster analysis. High positive correlations was proved between Quernus mongolica and Fraxinus mandshurica, and Symplocos chinensis for. pilosa, and Lespedeza bicola, Acer tschonoskii var. rubripes and Taxus cuspidata, Magnolia sieboldii and Callicarpa japonica, Taxus cuspidata and Abies koreana, and high negative correlations was proved between Quercus mongolica and Acer tschonoskii var. rubripes, Taxus cuspidata, and Lonicera maackii. Species diversity(H') of investigated area was calculated 0.9969~1.2217.

• Journal of The Korean Society of Grassland and Forage Science
• /
• v.14 no.1
• /
• pp.18-26
• /
• 1994

Forage quality evaluation with several grasses grown at a high altitude pasture situated at 1,000m above sea level was made to determine what is the feed value of these grasses and whether these grasses have any differences in forage quality compared with the grdsses grown at lowland pastures. In this experiment, Common, Venture, and Palaton reed canarygrass (Phahris arundinucea L.) and Climax timothy (Phleum pratense L.) were used and harvested at two different dates, 5 July and 30 September, 1989. Cmde protein (CP) concentrations in the grasses grown in September were higher than in July. Among the grasses grown, Palaton and Common reed canarygrass were highest in CP concentration in July and September, respectively. Acid detergent fiber (ADF) and neutral detergent fiber (NDF) concentrations in the grasses harvested in July were higher than in September. Palaton reed canruygrass was lowest in ADF and NDF concentrations at the both harvest dates. Relative feed value (RFV) in the grases harvested in July was ranged from 92 to 105 and that in September was from 110 to 117. Palation reed canarygrass had the highest RFV of 105 and 117 in July and September, respectively, therefore, the forage quality of this grass was ranked as Grade 2 based on the AFGC Hay Quality Standards. Overall forage quality of the grasses grown at a high altitude pasture seemed to be higher than the forage quality at lowland pastures. Based on the RFV assigned by the AFGC, forages with RFV 92 to 117 in this experiment could only work well in rations for low producing dairy cows.

• Journal of The Korean Society of Grassland and Forage Science
• /
• v.12 no.3
• /
• pp.70-73
• /
• 1992

사료작물 저온발아성(低溫發芽性)은 수수 $\times$ 수단그라스잡종들이 좋았고 옥수수와 수단그라스는 비교적 저조하였고 PGE에 종자침지처리가 이탈리안라이그라스의 저온발아에 효과적이었다. 간척지의 수수파종시 염해 방지에는 모래를 파종후 피복하여 제염(除鹽) 효과를 얻을수 있었다. 수수류의 토양수분조건에 대한 광합성 연구는 포장용수량의 $60\sim80%$의 조건에서 광합성이 가장 왕성하였고 건물수량도 동일한 결과를 나타내었다. 옥수수의 광이용과 초형과의 관계연구는 이삭상부 엽각의 직립화는 밀식 조건에서 광이용성이 증가되었고 건물 및 종실수량에서 종수가 있었다. 또 밀식화에 따라 직립화 경향이 현저하였으며 옥수수의 다수성초형의 육성이 요청되었다. 질소시비에 대한 청예류의 생장 반응 연구들은 수단그라스에서 10a당 40Kg까지는 건물수량생산을 증가시켰으나 80Kg/10a 사용시는 질산태질소함량이 중독위험치를 초과하였다. 이러한 질산태질소의 중독위험은 6엽기까지 존재하였고 청산중독의 위험농도는 4엽기 이전까지, 또 18/$8^{\circ}C$의 저온조건에서 나타났다. 옥수수의 적정재식 밀도는 10a당 16.600본까지 밀식할수록 증가되었으나 가소화수량과 종실수량은 5.500본과 10Kg/10a 에서 최고치를 나타내었고 질소 추비 효과는 대관령 같은 고산지대에서는 나타나지 않았다. 맥류의 총체(總體)사료 이용성은 호밀, 밀, 보리 순(順)으로 저하하였고 파종시기가 빠를수록 월동성이 향상되었으며 수확적기는 출수후 24일경이었다. 호밀의 청예이용에는 월동후 2회예취와 12cm높이가 건물수량과 TDN수량을 높힐 수 있었다. 수수$\times$ 수단잡종의 출수기 이전 예취는 고사 경비율을 줄일 수 있었고 년 2회 예취와 예취높이 10cm가 가장 좋았다. 유채는 생육기간이 길어질수록 수량은 증가하였고 소화율의 감소도 현저하지 않았다.

• Journal of The Geomorphological Association of Korea
• /
• v.17 no.1
• /
• pp.29-38
• /
• 2010

Oegogae wetland is sub-alpine wetland which is formed in piedmont area in Jirisan National Park. Apparently Oegogae wetland seems to be well-protected wetland. Most alpine wetlands are located in the summit area, but Oegogae wetland is located in piedmont area which is transitional zone between the steep slope and relatively flat valley bottom. Oegogae wetland is active in terms of sedimentation and exceeds 1m in depth. Penetration tests show that composing material is soft such as peat and organic-rich sediment. Basal rock of the basin is gneiss and gneissic schist in general, which is good for the formation of wetland because those rocks are easy to form low permeability layer. Baseflow from the wetland takes control of the most of stream flow during the wet season and this is especially true during the dry season. Precipitation during the wet season increases water content and base flow from the wetland.

• Korean Journal of Environment and Ecology
• /
• v.14 no.1
• /
• pp.28-37
• /
• 2000

지리산국립공원의 아고산지대를 중심으로 분포하고 있는 한국특산종 구상나무의 생육현화과 구상나무림의 군집구조를 파악하여 앞으로의 구사나무림 관리의 기초자료를 마련하고자 구상나무가 생육하고 있는 지역에 42개의 방형구(20m$\times$20m)를 설치하여 식생을 조사하였다 분석한 결과 조사대상지는 세 개의 군집인 신갈나무-당단풍군집 구상나무-신갈나무군집 구상나무군집으로 분류되었다 수종간의 상관관계에서는 물들메나무와 함박꽃나무 함박꽃나무와 층층나무 구상나무와 잣나무 거제수나무와 노각나무 물들메나무와 말발도리 거제수나무와 물들메나무 거제수나무와 물갬나무 거제수나무와 함박꽃나무 철쭉과 회나무 주목과 미역줄나무 물갬나무와 노각나무, 잣나무와 마가목, 진달래와 명자순 명자순과 시닥나무, 가문비나무와 마가목 등의 수종들간에는 높은 정의 상관관계가 인정되었고 당단풍과 미역줄나무 등의 수종들간에는 높은 부의 상관관계가 인정되었다 본 조사지의 종다야도는 1.2389-1.2552으로 높게 나타났다 구상나무의 활력은 저조한 것으로 나타났으며 12.92%가 고사목이었다 생육현황표의 점수 평균은 13.88이었다.

• Proceedings of the Korean Society for Agricultural Machinery Conference
• /
• 2002.02a
• /
• pp.145-150
• /
• 2002

본 연구는 국내에서의 지역별 풍력자원을 조사하여 자연에너지인 풍력을 활용하고자 기상청의 기상 관측소 자료를 이용하여 분석하였던 바, 다음과 같이 요약 할 수 있다. 가. 평균풍속의 분포를 보면 제주고층이 10.8m/s로 가장 높았고, 순천이 0.6m/s로 가장적게 나타난 것으로 일반적으로 해안가나 내륙고산지대에서 높은 풍속을 보였다. 나. 풍속지속시간을 보면 대부분의 지역에서 3.0m/s 이상, 연간 5,000시간이상으로 나타나 풍력의 이용가능성을 알 수 있었다. 다. 풍력 에너지 밀도는 인천 142kWh/m$^3$, 제주도 400kWh/m$^3$, 대관령 280kWh/m$^3$, 울릉도 140kWh/m$^3$, 목포 200kWh/m$^3$및 군산 180kWh/m$^3$높게 나타났다.

• Journal of Korean Society of Forest Science
• /
• v.86 no.2
• /
• pp.146-157
• /
• 1997

To investigate the structure and the conservation strategy of Korean native species, Abies koreana forest at Cheonwangbong-Deokpyungbong area in Chirisan National Park, 48 plots($10{\times}10m$) were set up with random sampling method. Three groups - Abies koreana community, Abies koreana-Quercus mongolica community, Picea jezoensis-Betula ermanii community - were classified by cluster analysis. High positive correlations were shown between Picea jezoensis and Sorbus commixta : Quercus mongodica and Fraxinus sieboldiana, Symplocos chinensis : Euonymus macroptera and Vaccinium koreanum, and high negative correlations were shown between Quereus mongolica and Sorbus commixta. Species diversity(H') of investigated area was calculated 0.7208-1.2074. Vigor of Abies koreana was depressed, 12.24 of total number of Abies koreana investigated were dead. DBH of dead individuals ranged mainly 10-30cm.

• Korean Journal of Environment and Ecology
• /
• v.11 no.3
• /
• pp.270-276
• /
• 1997

The purpose of this study was to investigate the number of climbing plant species habitated in South Korea. Relationships between their distribution and environmental factors were surveyed. Research sites for vertical distribution were Mt.S rak, Mt.Kwangkyo, Mt. Eoudap and Mt. Chiri. The results of this study are as follows: The number of climbing plants habitated in South Korea was 267 species, 95 genera, 41 families. According as latitude lower, the number of climbing plant species increased. And most areas of Korean peninsula except for alpine regions and the northern part of North Korea seemed to be suited for the growth of climbing plants. The number of climbing plant species decreased with its altitude. And it is confirmed that their distributions were limited to the below of 1,500m sea level which was applicable to the area of Kira's warmth index above 45. The species of climbing plants changed with its plant community although at same altitude. The number of climbing plant species was different from the face of slope, and the species diversity became lower at south slope than that of north slope.

• Journal of Korean Society of Forest Science
• /
• v.109 no.2
• /
• pp.189-194
• /
• 2020

Daphne pseudomezereum var. koreana is native to Korea and is distributedin Kangwon-do, Jeollabuk do, and Gyeongsang-do. This economically valuable species has experienced a dramatic decrease in natural habitat due to climate change and is difficult to cultivate. In this study, we investigate a mass propagation method for D. pseudomezereum through in vitro culture and genetic resource preservation.WPM medium was better than the MS medium for shoot growth. As a result, we compared the shoot number and length of apical (W/AP) and non-apical shoots (W0/AP) with BA and GA₃ treatments in WPM medium. Their shoots and length grew well in both BA 8ìM + GA₃8ìM-treated apical shoot and without-apical shoot. NAA did not effectively induce rooting of the in vitro plantlet.