• Journal of Korean Society of Forest Science
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• v.87 no.4
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• pp.590-600
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• 1998

This study applied the normative approach to establish evaluative standards for the facilities in Moodeung-san Provincial Park. Based on the established evaluative standards, this study examined the present facility managerial conditions of the park, and suggested some management alternatives to solve the identified problems. Data were collected by on-site survey and a mail-back questionnaire during August of 1996 in Moodeung-san Provincial Park. Out of 1,173, 519 respondents (44.2%) were used for the analysis. According to the results, three indicators out of five established indicators except 'adequacy of garbage cans' and 'adequacy of trail-guidance facilities' were in worse conditions than the established evaluative standards. The three indicators were 1) adequacy of toilets, 2) cleanness of toilets, 3) waiting time for using public transportations. The present condition for 'adequacy of trail-guidance facilities' was the same with the evaluative standard. This study suggested some management strategies to improve these problematic conditions, and introduced how managers may use these information for the facility management of the park.

• Korean Journal of Medicinal Crop Science
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• v.14 no.3
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• pp.163-167
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• 2006

The various cultural practices of bulbils were tested for seed tuber production in Chinese yam (Dioscorea batatas Decne.). To obtain amount of seed tuber, yam bulbils were sowed from early April to early May. The late sowing reduced average tuber weight, and consequently the amount of small tubers less than 20g increased highly. The optimum seeding rate of bulbils was 200 kg/10 a for production of seed-tubers. The average tuber weight was decreased according to increasing of seeding rate, so the amount of small tubers among total harvested tubers increased greatly at high seeding rate. Tuber size was affected by bulbil size. Seeding of the larger size bulbils result in increased sprouting rate, each tuber weight and tuber yield per unit area.

• Korean Journal of Environmental Agriculture
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• v.18 no.1
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• pp.24-27
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• 1999

When red pepper was cultivated in the polluted soil with heavy metals, the content of these heavy metals affected. The contents of heavy metals at a site near Zinc mine dump in the Youngyang area were very high compared with those in a normal area and it was highest in 2.0km site. followed 2.5km > 3.0km apart from Zinc mine dump. The growth of red pepper was remarkably poor and the contents of heavy metals in polluted soil were higher than in unpolluted soil. The relationship between the content of Zn, Cu, Pb, Cd, As and the growth of red pepper was negatively correlated, respectively. A higher correlation seemed to exist among the content of Zn.Cu, Cd, As in soil, of Zn, Cd, and As in red pepper. The result indicated that heavy metals were absorbed and accumulated by plants grown in the polluted area.

• Korean Journal of Environment and Ecology
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• v.25 no.2
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• pp.227-234
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• 2011

The number of visitors and moving pattern were surveyed in Mudeungsan Provincial Park at all seasons from summer in 2008 to spring in 2009 at 16 points in 3 areas (Jeungsimsa district, Wonhyosa district and Jungmeorijae) for three days at each survey point. The estimated number of annual visitors to Mudeungsan Provincial Park was 2,789,924. The estimated number of visitors for entering the park through survey points was 1,864,623, the people just passing through the park by a vehicle was 832,070 and visitors using others than survey points was 93,231. There was a 2.8 times of difference in the number of visitors with a ratio of 74% of total visitors in Jeungsimsa district and 26% of that in Wonhyosa district. The result showed that the ratio of visitors who were headed for Jungmeorijae from Jeungsimsa district or Wonhyosa district was 34.1% of total visitors and 30.3% of these visitors were heading for the summit. The ratio of visitors who were heading for the summit such as Jangbuljae, Ipseokdae, Seoseokdae, Gyubong, etc. of Mudeungsan Provincial Park was 21.1% of total visitors.

• Korean Journal of Medicinal Crop Science
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• v.8 no.1
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• pp.58-63
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• 2000

Changes of yield and paeoniflorin content according to chemical control and harvest time were investigated. Peonies were harvested after four years from planting. Disease and pest control method was applied normally in first year. From second year to forth year we set two blocks and controlled them differently. In one, peonies were withered early under non-control condition. In the other which was controlled by spraying chemicals four time a year, top part withering was delayed. Harvest was taken four times top part withering was delayed. Harvest was taken four times: Jul. 25, Aug. 25, Sep. 25, and Oct. 25. In non-chemical, at harvest of Jul. 25, paeoniflorin content was highest and dry root weight was 1,126kg/10a which was little less than 1,177kg/10a of Aug. 25. In chemical control, dry root yield of Oct. 25. showed an increase of 33% over that of Jul. But paeoniflorin content in root at Oct. was lower than at Jul. or Aug. For high qualities and harvest yields of peony root, chemical control is necessary to maintain top part to late in Oct.

• Korean Journal of Medicinal Crop Science
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• v.5 no.3
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• pp.237-242
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• 1997

The experiment was conducted to find causes of rooting failure in divided crown of peony cultivation. The results were as follows : In farmer s fields, damage rate of rooting failure in divided crown of peony was 32% as non-sprouting 5.6%, withering after sprouting 20.7%, and wilting after sprouting 5.7%, repectively. Damage degree in farmer s fields was followed, above 70% by 4%, 41 to 70% by 17%, 11 to 40% by 45% per total field area, respectively. It was caused by rooting failure. Damage rate of rooting failure as affected by different planting time was 18.2% for planting in autumn, 42.9% for planting in spring, and damage in divided crown was higher than in seedling. As periods to planting were prolonged, growth and yield were larger poorly, treatment with seminal-root sterilization and soil insecticide showed good growth and rooting but untreated control was very poor. Main cause of rooting failure in divided crown of peony was disease, Cylindrocarpon sp. and low quality of seeds.

• Korean Journal of Weed Science
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• v.17 no.1
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• pp.10-23
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• 1997

This study was carried out to determine distribution and tuberization characteristics of tubers of water chestnut(Eleocharis Kuroguwai Ohwi) which is a dominant weed species and diffult to control during 1993 to 1994. By early planting of E. kuroguwai tubers, more and heavier tubers were developed, but the tubers were tended to distribute at the upper soils. Large proportion of tubers was remained at the upper 0 to 10cm soil layer and a few tubers were formed below 20cm. Tubers developed earlier tended to be at deeper layer, while later developed tubers were at upper layers. Tuber weight was increased from the surface to 20cm soil depths, but that formed below 20cm was almost same. No tillage resulted in more tuber formation which were distributed at upper soil layers when compared to conventional tillage. Cool water irrigation pumped from ground water resulted in less tuberization but smaller tubers when compared to control. Shading with color cellophan films resulted in smaller tuber formation with lower in sprouting percentage. Among the films tested, the most significant effect was obtained with green color.

• Korean Journal of Medicinal Crop Science
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• v.6 no.1
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• pp.38-43
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• 1998

This experiment was carried out to gather basic information for improvement of peeling methods in peony (Paeonia lactiflora) roots which have been used for medicinal resources in Korea. Drying time required was shortened in thin root. Optimum drying time after machine peeling appeared to be 20 hrs in 5 to 10mm of root diameter, 39 hrs in 10 to 15mm, 48 hrs in 15 to 20mm, 56 hrs in more than 20mm, but those of unpeeled roots took 11 hrs in 5mm of root diameter and 4 hrs in exposed parent material. Paeoniflorin content in dried roots after peeling was lower than that of unpeeled root. Paeoniflorin content in root below 5mm in diameter was highest (6.15 %) and that was decreased in the increased root diameter up to 20mm, but it was slightly increased in root greater than 20mm in diameter.

• Korean Journal of Medicinal Crop Science
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• v.3 no.1
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• pp.16-20
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• 1995

This study was carried out to know the effects of $N,\:P_2O_5,\:K_2O$ application and mulching materials on the yield and quality of Peusedanum japonicum. And conducted from 1990 to 1992 in the south region. The emergency rate by mulching materials was 80% on non-mulching, 74% on black P.E mulching, but 49% on the transparent P.E mulching. The yield of dried root on the transparent P.E mulching was increased 7% compared to non-mulching. The decreasing rate of yield was increased with the sequence of $N>P_2O_5>K_2O_5$. The significant negative correlation was obtained between the content of ash and nitrogen application, and the significant positive correation between the content of ash and potassium application. The contents of ash, acid insolubleash, and $C_2H_5\:OH$ OH extract were not affected by the treat-ment of mulching materials. When Peusedanum japonicum was cultivated in the south region for one year, optimum application of fertilizers was $N-P_2O_5-K_2O_5=21-13-10kg/10a.$

• Journal of the Korean Society of Food Science and Nutrition
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• v.40 no.8
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• pp.1079-1085
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• 2011

We investigated the biological activities of extracts from the flowers of Angelica gigas Nakai. The $IC_{50}$ of the DPPH radical scavenging activity was 3,535 and 105.0 ${\mu}g/mL$ in the water and ethanol extracts, respectively, whereas it was 12.7 ${\mu}g/mL$ for ascorbic acid. The results showed that the total polyphenol content of the ethanol extracts (48.43${\pm}$0.18 mg/g) was higher than that of the water extracts (39.03${\pm}$0.69 mg/g). The flavonoid content of the ethanol extracts (67.02${\pm}$4.38 mg/g) was higher than that of the water extracts (50.32${\pm}$1.24 mg/g). The ethanol extract showed a 34.45% lower ${\alpha}$-glucosidase inhibition activity than that for acarbose. The ethanol extract showed a 23.62% lower ${\alpha}$-amylase inhibition activity compared with that for acarbose. The water extract showed 16.76% lower pancreatic lipase inhibition activity. Anti-cancer and anti-inflammatory activity was also lower. These results suggest that the flower of Angelica gigas Nakai may be useful as an anti-oxidative agent.