• Journal of Korean Society of Forest Science
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• v.89 no.5
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• pp.543-551
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• 2000

This study was conducted to understand Pinus densiflora regeneration characteristics from canopy gaps due to disturbance in natural forests located at Mt. Joongwang in Kangwon-do. The line-transect method was adopted to analyze crown architecture of Pinus densiflora. The saplings of Pinus densiflora in the canopy gap showed high adaptation to growth environment at their early regeneration stage, and showed different characteristics in crown architecture. Variation of branching angle in the main branch of Pinus densiflora was small in canopy gap. Primary branch growth showed was high during 4~5 year-old period and slowly low after that period. Average 5 of primary branch were generated from stem in canopy. Average 4 of secondary branch were generated from primary branch in canopy gap. Primary branches generated from the stem were uniformly distributed at all cardinal directions. When canopy gap size is $100{\sim}120m^2$, secondary branches generated from primary branch had mostly high numbers between $S44^{\circ}E$ and $S90^{\circ}W$.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2012.05a
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• pp.17-17
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• 2012

야콘의 유전자원 4계통(HLY1, HLY2, HLY3, HLY4)에 대하여 단백질, 회분, 탄수화물, 식이섬유, 비타민, 프락토올리고당 등의 영양 성분을 분석하였다. 2010년 강원도 평창군 진부면(해발고도 560 m) 시험 포장에서 5월 12일에 정식하여 10월 20일에 수확한 야콘을 시료로 사용하여 농촌진흥청 식품 분석표에 준하여 분석하였다. 야콘은 신선한 괴근 100g당 열량 44~59kcal, 수분함량이 86~87%, 회분 0.2~0.4g, 단백질 0.5~0.7g, 탄수화물 11.0~13.1g, 지방 0.1~0.2g, 식이섬유 1.4~1.7g, 칼슘 8~10mg, 인 24~31mg, 철 0~0.1mg, 나트륨 1~2mg, 칼륨 154~208mg, 레티놀 0.001~0.004mg, 카로틴 0.001~0.024mg, 티아민 0.03~0.11mg, 리보플라빈 0.02~0.03mg, 니아신 0.3~0.4mg, 아스코르브산 10.6~29.6mg이 들어 있는 것으로 조사되었다. 또한 야콘의 괴근에는 당 함량이 많았는데 생체중 100g당 프락토올리고당 5.7~10.1g, 글루코스 0.3~0.9g, 프럭토스 0.2~0.7g, 슈크로스 0.4~3.3g이 함유되어 있었다. 따라서 야콘은 베타카로틴, 칼슘, 탄수화물 등 14가지 필수영양소를 함유하고 있는 알칼리성 식품으로서 향후 기능성 식품소재로도 이용가치가 높으리라 판단된다.

• Research in Plant Disease
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• v.15 no.1
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• pp.36-40
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• 2009

This research was accomplished to screen the cultivar which is suitable in organic cultivation of the broccoli having good horticultural characteristics and the resistance to black rot. Thirteen cultivars of the broccoli were planted at Gangwon alpine areas of Pyeongchang county and Gangneung city and investigated the horticultural characteristics in 2006. Everybro, Tamsuerun, Nockjae, and Pilgrim had good horticultural characteristics in all two experimental fields. The resistance and susceptible reactions regarding the black rot of broccoli cultivars were different from according to two fields. This result means that physiological race of black rot pathogen distribute in Gangwon alpine areas. Everybro and Nockguck were resistance to black rot in all two experimental fields. Also these two cultivars had good horticultural characteristics. We recommend that Everybro and Nockguck will be suitable in organic cultivation.

• Journal of Korea Soil Environment Society
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• v.2 no.2
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• pp.35-51
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• 1997

To clarify the effect of forest environmental changes (forest type difference and clearcut) on water storage capacity in soil and stream flow, watershed had been investigated in Pyungchang, Kangwon-Do during 1983∼1993. Hydrological datas such as runoff, monthly ratio of runoff to precipitation, runoff-duration, monthly runoff(by plenty, ordinary, low and scanty duration), total runoff, direct runoff by runoff components, bulk density, porosity, coarse pore, fine pore, permeability and effective water storage were obtained from Backokpo and Yimokjong watersheds. The monthly ratio of runoff to precipitation, runoff and runoff-duration were higher in Yimokiong than in Backokpo due to forest type difference. On compararing pre-treatment with trement period in two experimental watersheds, pre-treatment period was lower than treatment period. Physical properties of soil such as bulk density, porosity, permeability, and effective water storage capacity conditions were better during the pre-trement period than treatment period in the two experiment plots.

• Journal of Korean Society of Forest Science
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• v.97 no.3
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• pp.229-236
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• 2008

The objectives of this study were to investigate inputs and pH values of stemflow of bulk precipitation and 5 tree species (Deciduous species : Quercus mongolica, Betula costata, Kalopanax septemlobus, Fraxinus rhynchophylla, Plantation species : Larix kaempferi), in Mt. Joongwang, Pyongchang-gun, Gangwondo, from June to October in 2004 and 2005. The amount of stemflow during study period was the greatest in Q. mongolica (9.9 mm), and B. costata (7.5 mm), K. setemlobus (5.9 mm), L. kaempferi (3.8 mm), F. rhynchophylla (3.2 mm), respectively. Stemflow of each species increased with bulk precipitation. Increment with bulk precipitation was smaller in 2004 when the intense bulk precipitation occurred more. pH values of stemflow was the highest in F. rhynchophylla (5.91), and K. setemlobus (5.64), B. costata (5.80), Q. mongolica (5.56), L. kaempferi (5.25), respectively. Generally, pH values of stemflow of all species increased with bulk precipitation pH value, and lower than that (6.39).

• Journal of Bio-Environment Control
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• v.10 no.4
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• pp.219-224
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• 2001

This experiment was conducted to evaluate net mineralization and nitrification in rain shelter soil incorporated with wine sludge. Net mineralization and nitrification rates varied among treatments during pepper growing periods. In general, net mineralization increased up to 90 days after transplanting before its decrease during the rest growing periods. Maximum net mineralization and nitrification in upper 0-15 cm layer soil were observed in T4 at 90 days after transplanting. The greatest amount of mineralization in upper layer soil was 272.5 mg.kg$^{-1}$ at 30 days in the control and 843.3 mg.kg$^{-1}$ at 90 days after transplanting in T4. Overall, both net mineralization and net nitrification were greater in the upper layer soil than in the lower 15-30 cm layer soil.

• Journal of Korean Society of Forest Science
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• v.95 no.3
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• pp.299-308
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• 2006

This study was conducted to investigate differences in energy content of Quercus mongolica stands in the Republic of Korea with respect to latitude and altitude. Study sites were located in Mt. Joongwang, Pyeongchang-gun, Gangwon-do (altitude 1,300 m, 1,000 m, 800 m), Mt. Taehwa, Gwangju-gun, Gyeonggi-do (altitude 350 m), Mt. Wolak, Jecheon-si, Chungcheongbuk-do (altitude 300 m), Mt. Baekwoon, Gwangyang-gun, Jeollanam-do (altitude 800 m), and Mt. Halla, Jeju-do (altitude 1,000 m) by northern and southern aspect. Total energy content and annual energy fixation of Q. mongolica stands were 2,916-6,550 GJ/ha and 250-440 GJ/ha, respectively during the study period, Lower latitude (NE) stands of Q. mongolica showed more energy contents and annual energy fixation than higher latitude stands. Energy content and annual energy fixation of Q. mongolica stands were increased in low altitude. Energy content of Q. mongolica stands were higher in northern aspect than southern aspect. However, there were no significant differences in annual energy fixation between the aspects. Annual energy fixation of Q. mongolica stands was highly correlated with warm index and followed by descending orders: altitude, stand age, aspect, annual solar radiation and latitude.

• Analytical Science and Technology
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• v.8 no.2
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• pp.161-166
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• 1995

Determination of acteoside in Pedicularis resupinata var. oppositifolia has been studied using ion pair liquid chromatography. Sample was extracted with 40mL methanol for 4 hrs. The extract was cleaned up by using Sep-Pak $C_{18}$ catridge and 8mL aqueous methanol eluent(methanol 50%, water 50%, phosphate buffer pH=8.0). Its determination was performed by means of IP-HPLC with a Hamilton PRP-1 polystyrene-divinylbenzene reversed phase column($15cm{\times}4.6mm$ i. d., $5{\mu}m$) and an aqueous methanol eluent(methanol 60%, water 40% phosphate buffer pH=8.2) containing of $5.0{\times}10^{-3}M$ tetrabutylammonium bromide. The established method was applied to the sample that was collected in area of Pyung Chang gun. As a result, its content ranges showed to be 0.062~0.076%.

• Journal of Korean Society of Rural Planning
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• v.3 no.2
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• pp.36-49
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• 1997

The drastic change of mountain community, which have led existing villages to a size reduction or an extinction, makes this study concentrate on finding out the new community unit as a spatial zone of dayily life and agricultural production. The communality which has played a key role in a aura settlement consistency has been focused on the socio-economic aspect till now, neglecting the spatia] nature. The settlement-communality( SC) putting a stress on the spatial aspect can be, therefore, shapec as being multi-dimensional, composed of both a horizontally areal coverage on the surface of the residential place and a vertically hierarchial relationship between settlements, by analyzing thro( elements of communality that are the economic, socio -cultural and spatial activities. The research site is located administratively in Milan-Myoun, Pyoungchang-Gun, Gangwon-Do that ha: the characteristics as a typical mountain community. The results of field survey of which the method i: to draw the activity zone from an interview with every village's head and some residents with th( prepared questionaire can be summarized as followings. Firstly, the SC in almost all villages tended to be weakened or extincted, none the less, the spatia zone of that overally enlarged and got out of natural village unit(hamlet). However the areal coverall on which the SC has an influence reaches up to the alliant domain of a few villages generally congruen with the lowest level administrative district, Secondly, the economic and social activity pattern in village life has a tendency to be directly linked with a upper central place, so that has induced the function of a central village in the middle-low settlement hierarchy to be largely shrinked. Not only the conventional residents'access to goods service but also the recent service-delivers'access to residents has gradually formed the vertical communality with direct linkage between the upper and the bottom level settlements Lastly, the enfeeblement of the SC in the lowest settlement level tends to be supplemented by enlarging the horizontal zone of the SC or especially by strengthening the vertical direct linkage system. The very this point makes the mountain community open to the external world and also makes the spatial unit of community be multi-dimensional just like a cubic.

• Journal of Korean Society of Forest Science
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• v.86 no.4
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• pp.422-429
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• 1997

This study was conducted to maintain the productivity of forest production and byproducts production of natural forest. Distribution of wild edible herb species and correlations between wild edible herb species and forest-type, and site factors were surveyed on national forest in Changjeon-ni, Pyungchang-gun, Kang-won-do. Ligularia fischeri was distributed mainly on cutting sites or meadow or Quercus mongolica forest, Pimpinella brachycarpa did on broadleaved mixed forest, and Synurus deltoides did cutting sites or meadow. On conifer plantations major wild edible herb species were not distributed. Pimpinella brachycarpa and Ligularia fischera were distributed mainly on the site of wet soil-moisture condition, Codonopsis lanceolata, Saussurea grandifolia and Synurus deltoides were distributed randomly. The distribution of Ligularia fischeri and Pimpinella brachycarpa were significantly different between slope directions, but those of Codonopsis lanceolata, Saussurea grandifolia and Synurus deltoides were not significant. Ligularia fischeri and Pimpinella brachycarpa were distributed more frequently in north directed slope than the other. Highly positive correlations were proved Ligularia fischeri and Pimpinella brachycarpa, Aconitum jaluense and Veratrum patulum; Pimpinella brachycarpa and Smilacina japonica, Aconitum jaluense and Veratrum patulum.