• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.37 no.2
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• pp.11-19
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• 2019

The study was done to analyze the records of planting time of Gwangneung needle firs referring to the historical literatures, the Annals of Joseon Dynasty(朝鮮王朝實錄), Seungjeongwonilgi(承政院日記: Journal of the Royal Secretariat). Bibyeonsadeungnok(備邊司謄錄: Records of the Bibyeonsa Defense Council, a government agency during the Joseon Dynasty), Ilseongnok(日省錄: Journal on Dynasty affairs of the kings in the 36th year of Youngjo to 1910) to lay the historical ground for needle firs in Gwangneung. The following results were derived from previous research, Report on Gwangneung Forest Ecosystem, and overlaid fir tree rings. The research findings are as follow. First, since the system of making the grave is the most conservative system, the planting during the Gwangneung construction would have been preceded by precedent. Second, the problem of cutting the tree in the late Joseon Dynasty became serious. It is published the Law of Muo In the 22nd year of Jeongjo, and then planted trees regularly in spring and autumn. Third, the Law of Muo was preserved for 31 years during the reign of King Gojong, and the type of specific tree, the number of trees, from the 22nd year until the 25th year of King Gojong, four years of fir trees were planted in Gwangneung, and Gwangneung was the only place where korean pine trees were planted. Fourth, it was possible to identify the age of the tree through fallen fir tree rings, and the period of planting fir trees growing in the existing mausoleum is judged to be the equivalent year of King Gojong's reign from the 10th year of King Cheoljong's reign.

• Journal of Korean Foot and Ankle Society
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• v.26 no.2
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• pp.88-94
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• 2022

Purpose: This study was based on the Korean Foot and Ankle Society (KFAS) member survey and aimed to report the current trends in the epidemiology, diagnosis, and management of acute Achilles tendon rupture (AATR) over the past few decades. Materials and Methods: A web-based questionnaire containing 34 questions was sent to all KFAS members in October 2021. The questions were mainly related to the clinical experience and preferred management of patients with AATR. Answers with a prevalence ≥50% of the respondents were considered a tendency. Results: Seventy-one (12.9%) of the 550 members responded to the survey. The male sex ratio in AATR was answered mean 78%, and the most common age groups were 30~40 years (n=49; 69.0%), and 40~50 years (n=37; 52.1%), in that order. The most common seasons for the occurrence of AATR were spring (37 cases; 52.1%) and autumn (27 cases; 38.0%). Also, sports-related rupture had an average occurrence of 76.2%. The most important clinical factor to determine the type of treatment was the history of previous injuries, and 75.9% of respondents started conservative treatment in the 2010s. The most preferred protocol of conservative treatment was an orthosis capable of ankle range of motion after casting (68.5%), and 53.7% 'satisfied' and 1.9% 'very satisfied' with conservative treatment. The most preferred surgical method was open repair (80.3%), and the Krackow method (60.6%), and 49.3% of treated patients responded 'satisfied' and 45.1% 'very satisfied' with this treatment. Conclusion: This study gives updated information concerning the current trend of epidemiology, diagnosis, and treatment of AATR in Korea. Both consensus and variation in the approach to AATR were identified using this survey study. This study may raise the awareness of various possible approaches toward AATR and should be used to further establish a standard protocol for the management of this injury.

• Korean Journal of Ecology and Environment
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• v.55 no.4
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• pp.320-329
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• 2022

Urban areas in watersheds increase the impervious surface, and agricultural areas deteriorate the water quality of rivers due to the use of fertilizers. As such, anthropogenic land use affects the type, intensity and quantity of land use and is closely related to the amount of substances and nutrients discharged to nearby streams. Riparian vegetation reduce the concentration of pollutants entering the watershed and mitigate the negative impacts of land use on rivers. This study analyzes the data through correlation analysis and regression analysis through point data measured twice a year in spring and autumn in 21 selected damaged tributary rivers within the Han River area, and then uses a structural equation model to determine the area land use. In the negative impact on water quality, the mitigation effect of riparian vegetation was estimated. As a result of the correlation analysis, the correlation between the agricultural area and water quality was stronger than that of the urban area, and the area ratio of riparian vegetation showed a negative correlation with water quality. As a result of the regression analysis, it was found that agricultural areas had a negative effect on water quality in all models, but the results were not statistically significant in the case of urban areas. As a result of the model estimated through the structural equation, BOD, COD, TN, and TP showed a mitigation effect due to the accumulation effect of river water quality through riparian vegetation in agricultural areas, but the effect of riparian vegetation through riparian vegetation was found in urban areas. There was no These results were interpreted as having a fairly low distribution rate in urban areas, and in the case of the study area, there was no impact due to riparian forests due to the form of scattered and distributed settlements rather than high-density urbanized areas. The results of this study were judged to be unreasonable to generalize by analyzing the rivers where most of the agricultural areas are distributed, and a follow-up to establish a structural equation model by expanding the watershed variables in urban areas and encompassing the variables of various factors affecting water quality research is required.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2021.04a
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• pp.41-41
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• 2021

잇꽃(Carthamus tinctorius L.)은 국화과에 속하는 두해살이 초본 식물로 한자명은 홍화(紅花), 영명으로는 Safflower를 사용하고 있다. 우리나라의 잇꽃 재배는 2010년 39ha 수준이 재배되다가 2014년에는 76ha까지 확대되었으나 점차 감소하는 추세를 보이고 있으며 2018년에는 55ha가 재배되고 있는 것으로 보고되었고 주산지는 전라남도와 경상북도로 알려져 있다. 잇꽃은 종실을 주로 한약재 원료로 사용해왔으나, 잇꽃의 어린 순을 나물용으로 생산하기 위한 재배가 늘어나는 추세이다. 본 연구는 준고랭지에서 잇꽃 나물을 생산하기 위한 재배 양식과 파종시기별 수량성 및 품질 차이를 구명하고자 수행하였다. 준고랭지에서의 가을 재배에서 파종 후 80%가 출현하기까지의 출현 소요일수는 5~7일로 나타났으며, 재배유형별 수확 도달일수는 시설 재배 9월 29일 파종이 29일로 가장 짧았고 노지 재배에서는 8월 25일 파종이 42일로 가장 길었다. 파종시기별 수확기까지의 유효적산온도는 시설 하우스에서 9월 29일 파종 후 10월 28일 수확하는 작형에서 634.4℃로 가장 낮게 나타났다. 재배 유형별 생육량을 조사한 결과 엽수 및 엽면적은 노지 재배 8월 25일 파종 작형에서 높았고 노지 9월 21일 파종 후 10월 8일 터널을 설치하는 작형에서는 경태 및 엽면적이 4.6mm, 26.2mm²로 유의하게 작은 경향을 나타냈다. 재배 유형별 건조수율은 13.8~15.1% 범위로 파종시기별로 유의한 차이를 보이지 않았으나 당도에서는 노지재배 9월 9일 파종과 9월 21일 파종에서 7.1°Bx, 7.0°Bx로 유의하게 높았고 시설 재배 9월 29일 파종에서 3.1°Bx로 가장 낮게 나타났다. 단위 면적당 생체 수량에서는 노지재배 8월 25일 파종에서 2,223.9kg/10a으로 가장 높았으며, 건조수율로 환산한 건물 수량에서도 노지 8월 25일 파종 작형에서 335.8kg/10a으로 유의하게 높게 나타났다. 노지 재배의 파종시기별 비타민 A 함량은 9월 21일 파종에서 23.3mg/100g으로 높았으며, 비타민 E 함량 또한 25.1mg/100g으로 높은 양상을 보였다.

• Korean Journal of Environment and Ecology
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• v.28 no.5
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• pp.597-606
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• 2014

The preference of general adult on the forest and forest road was surveyed and analyzed for the development of forest therapy program. This study was conducted for the purpose of providing a basis for the development of more targeted-and differentiated-forest therapy program by analyzing the preference of general adult on the forest and forest road from 19 April 2014 to 30 June 2014 through on-line survey. The sample group of 613 adults has been used in practical analysis. Using SPSS 21.0, We looked at the preference differences of the forest and forest road according to the demographic characteristics(sex, age, education level, occupation and monthly income) through descriptive statistics analysis, frequency analysis, cross tabulation analysis, multiple response analysis. The seasonal preference was spring, autumn, any season, summer, winter in order and there was a significant difference according to one's sex, age, occupation and monthly income. There was a significant difference in the configuration of forest according to one's monthly income. The favorite type of forest as a place of forest healing program was natural recreational forest, healing forest, urban forest, park, school forest in order. There was no significant difference in the favorite forest type regarding to the distance to the healing place from one's residence in all cases. There was a significant difference in the type of forest according to one's monthly income. The most favorite configuration of forest road was gentle sloped road. Once walking into the forest for the purpose of healing, the favorite forest road length was 1.5~3 km, less then 1.5 km, more than 3 km in order and there was a significant difference in preference according to one's sex, age, education level and monthly income. We believe that the healing program should be differentiated from the general form of it according to one's sex, age, education level, occupation and monthly income as a result of this investigation of preference of general adult on the forest and forest road for the development of forest therapy program. In particular, we believe that the differentiated program should be offered according to one's age. We expect this analysis to be used as a basis for the development of forest therapy program.

• Korean Journal of Plant Resources
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• v.20 no.1
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• pp.43-49
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• 2007

This study was conducted to examine the pattern and characteristics of flowering and leaf emergence for twenty two kinds of the genus of Lycoris sp. One species of Lycoris was flowered on July to August, twelve species on August, and nine species on September. Shape of flowers were as follows : Nine species belong to L. radiara-shaped flower, seven species L. squamigera-shaped flower, and seven species the intermediate type. Flower color of three kind were an order of descent red and pink. seven kind white, four kind yellow, three kind orange, and two kind purple colors. Ten Lycoris species were good fertile, and two kinds were poor fertile. The average length of pollen grain was ranged from $48.53\;to\;88.62{\mu}m$, and the width from $22.87\;to\;33.67{\mu}m$. Eleven kinds were spring-leaf emergence type, and ten kind autumn-leaf emergence types. Hunter values in leaves were as follows : $L^*$ value was ranged from 31.6 to 45.2; $a^*$ values from -6.74 to -17.46; $b^*$ values from 6.19 to 21.89 Leaf width was ranged from 0.90 to 2.35cm, and its shape was oblong. The length of epidermal cells was 0.33 to 0.75mm, and the width was $38.53\;to\;90.00{\mu}m$. Most of stomata were distributed in the back side of leaves. The length of stomata was ranged from $67.12\;to\;104.89{\mu}m$, and its width was from $14.90\;to\;71.52{\mu}m$.

• Korean Journal of Weed Science
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• v.14 no.4
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• pp.258-264
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• 1994

The weed survey in lowland rice field in 1992 was conducted to identify weed population change as affected by different elevation, soil type and cultivation pattern at Gangweon province. There were more perennial weeds in plain and east coastal area while more annual weeds in mid alpine and alpine area. Meanwhile, perennial weed species was more dominant at ordinary and sandy soil but annual weed species was more dominant at poorly drained soil. In general, hand and machine(30 day old seedling) transplanting would result in higher dominant weed species of perennial while there was more annual weed species in machine (10 day old seedling) transplanting and dry seeding, respectively. Also, annual weed species was more predominant at spring plowing time compared to autumn plowing time. Particularly, there was change in dominant weed species with time. In 1971 annual weed species was more predominant but perennial weed species was highly dominant in 1981 and 1992.

• Applied Biological Chemistry
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• v.32 no.2
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• pp.104-108
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• 1989

A 2.5 ton scale of solar energy concentration blast-grain circulation dryer (SECD) was developed in order to shorten the drying time without damaged paddy. Comparative experiments were carried out on performance, drying efficiency, consistency in moisture content, milling recovery, grade of milled rice, and energy requirement and cost against all that of in-bin drying and storage (IBDS) method. The experiments were performed using mixture of several rice varieties of Tongil type(Japonica-Indica breeding type) under the autumn weather in Korea. The circulating air temperature inside SECD was $4{\sim}5^{\circ}C$ higher than that of IBDS. The moisture content of the paddy during the drying period in SECD was uniform while substantially varied in upper, middle or bottom layer in IBDS. By SECD, 24% initial moisture content of paddy was reduced to 15% after only 3 days of drying as compared to 14 days at IBDS. The percentage of cracked kernels in upper, middle and bottom layers in IBDS was 6, 6 and 12%, respectively, whereas 7% in all layers in SECD. Both types of dryers did not significantly affect the milling recovery of dried paddy and grade of milled rice. Energy requirement of SECD(28.8Kw/2.5ton) for paddy drying was much less than that of IBDS(108Kw/2.5ton).

• Korean Journal of Environment and Ecology
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• v.31 no.1
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• pp.112-118
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• 2017

The purpose of this study is to clarify the characteristics of the soundscape in a natural park and an urban park. The study sites were a natural park (Chiaksan Nationalpark) and an urban park (Rose Park) in Wonju City, Gangwon Province. Soundscape recording was conducted using Digital Recorder from April 2015 to January 2016. The analysis period was 8 days per season, with a total of 64 days (2 places). Analysis items were soundscape's daily cycle, soundscape type, and seasonal variation. According to the result of the daily cycle analysis of the soundscape, the natural park was dominated by the biophony in accordance with the cycle of the sun, and the airplane sound was observed in the daytime. Meanwhile, anthrophony was consistently produced in the urban park 24 hours a day. As a result of the detailed type analysis of the soundscape, the sources of biophony were classified into wild birds, mammals, insects and amphibians, and the sources of geophony were classified into rain and wind. The anthrophony was mostly airplane sound. In the urban park, wild birds appeared to most influence the biophonic sounds while rain and the wind were the most frequent sounds that contribute to geophony. The most influential components of anthrophony in the urban park were in the order of automobiles, people, music, construction, cleaning, and airplane sound. As a result of the seasonal difference analysis of the soundscape, it was statistically significant that the natural park shows higher biophony in spring, summer, and autumn compared to the urban park. Anthrophony in the urban park appeared to be higher than the natural park in all seasons. The significance of this study is that it is the first study to identify the characteristics of the soundscape of a natural park and an urban park emanating from different landscapes in South Korea.

• Journal of Wetlands Research
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• v.17 no.1
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• pp.62-74
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• 2015

Urban areas are variously under threat including deterioration of ecological functions. Many pond wetland types have been created as part of an effort to improve and restore this urban environment. This study was arranged to examine improvement plans of wetlands in urban areas by analyzing semi-natural wetlands in farm areas. As for environment for water quality, it suggested the inflow of natural water neighboring rivers or the direct inflow of rain as the improvement plans. The result which analyzed soil pH, OM, and T-N content of the soil environment mentioned that urban areas supplied artificial sluices, removed apoptotic bodies, and used artificial soil and waterproofing materials and use of natural materials in design and construction, the sluice state of the natural form, and negligence of autumn plants were suggested as the improvement plans. Florae appeared in the subject sites of the study have found that there are 35 families 69 species in urban areas and 53 families 142 species in rural areas. As the average has found that there are 18.5 families 29.3 species in 4 urban areas and 26.3 families 53.5 species in 4 rural areas, the big difference between them was analyzed. As the cause has found that there are differences in yearly plants in farming areas when compared to urban areas, creation of various basic environments including soil and water quality was suggested to make yearly plants settle down widely. Naturalized plants have found that there are no big differences between urban areas and rural areas. However, the average of the naturalized ratio in urban areas is 17.4% as the naturalized plants are about 1/4 of the appeared plants. As it was analyzed to be higher than 7.7%, the average of the naturalized ratio in farming areas as the big difference, creation of various inhabiting environments was suggested to make more yearly plants appear like the analyzed result of the life type. Consideration of placement, materials, and inhabiting environments was suggested to make creation of wetlands well appreciated to improve functions of wetlands in urban areas. It is expected that the above results of the study will be utilized in creation and improvement of the pond wetlands which can play a huge role in increase and improvement of biological diversity in urban areas.