• 한국환경복원기술학회지
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• 제23권1호
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• pp.49-62
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• 2020

This study was conducted as a basic study to develop the HSI(Habitat Suitability Index) model of Pelophylax chosenicus based on the research on the ecological and habitat status of Pelophylax chosenicus and the literature research on the HSI model. The habitat variables of Pelophylax chosenicus are the altitude of the spawning pond, the habitat area, the distance from wetland, the soil(aptitude grade for paddy field), the place for eating such as paddy field and wetlands(land cover) and the distance from Predator(Lithobates catesbeianus) distribution area. Based on the existing literature of Pelophylax chosenicus, the results of field surveys and expert opinions, the SI(Suitability Index) model and HSI model were developed and applied to the site to examine the applicability of the HSI model. As a result of application, SI 4 and SI 5 with varying SI values seem to have a major influence on the HSI. In addition, it is considered that the HSI model is an arithmetic mean of SI models, which has a major impact on HSI. The HSI model can be an important basis for the habitat evaluation and restoration model of Pelophylax chosenicus. In particular, it is highly applicable to the selection and evaluation of alternative habitats for Pelophylax chosenicus.

• 한국보건간호학회지
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• 제31권2호
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• pp.327-340
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• 2017

Purpose: The aim of this study was to identify the barriers to promoting physical activity among obese children from low-income families using community child care (CCC) centers. Methods: This study employed an exploratory-descriptive qualitative research using focus group interviews. The participants were recruited from CCC centers, and 4 focus group interviews were conducted with 10 overweight and obese children and 14 primary caregivers. All interviews were recorded and transcribed verbatim. The data were analyzed using content analysis. Results: The barriers to promoting physical activity were classified into three areas: 1) individual, a lack of will for physical activity; 2) interpersonal, a change in communicative mean with the peer group, absence of parental monitoring due to work-family balance, and an absence of consistent rules; and 3) organizational, lack of physical activity programs and human resources, and confined space for physical activity. Conclusion: The physical activity of children in low-income families is influenced by a range of ecological barriers. These findings can be used to develop tailored intervention to prevent and manage childhood obesity in low-income children.

• 한국습지학회지
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• 제24권3호
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• pp.185-195
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• 2022

본 연구는 생태·경관보전지역을 중심으로 하천의 규모와 서식지에 따른 생태특성을 확인하기 위하여 2014년부터 2020년까지 봄과 가을에 걸쳐 조사를 수행하였다. 전체 조사지역을 통하여 출현한 저서성 대형무척추동물은 총 5문 8강 25목 105과 256종이 출현하였다. 출현한 분류군 중에서 유수역으로 이루어진 지역에서는 하루살이목과 날도래목의 출현율이 높게 나타났고, 정수역으로 이루어진 지역에서는 딱정벌레목과 잠자리목의 출현율이 높게 나타났다. 지역별로 EPT(하루살이목, 강도래목, 날도래목)그룹의 개체수를 비교하였을 때, 상류지역, 본류지역, 정수지역으로 분류되었고, 상류에서 하류로 이동할수록 EPT의 개체수비율이 달라지는 것을 확인할 수 있었다. 생태·경관보전지역 내의 하천은 하천 차수가 증가할수록 출현하는 종수와 개체수가 증가하는 경향을 보였다. 썰어먹는 무리(SH)는 하천 차수가 증가하여 하천의 규모가 커지면 감소하는 경향을 보였고(r=0.9925), 걸러먹는 무리(CF)는 하천 차수가 증가하여 하천의 규모가 커지면 증가하는 경향을 보였다(r=0.9319). 긁어먹는 무리(SC)는 상류에서 하류로 내려갈수록 유사한 생태학적 지위를 갖는 종들로 대체되어 하천 차수에 따른 변화를 찾기 어려웠다. 생태·경관보전지역의 지정 및 관리에 있어서 건강한 생태계를 유지하기 위하여 생물 간의 경쟁 등 생태학적 요인과 수질 및 하상상태 등 이화학적인 요인 등을 고려할 필요가 있다. 따라서, 다양한 규모의 하천과 물리적 서식지를 포함하는 완충지역을 확보하고, 인위적 교란 요인을 제거하는 등 관리를 강화하는 것은 생태·경관보전지역의 건강성 및 생물자원의 확보에 유리할 것으로 판단된다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2002년도 학술논문발표회
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• pp.75-80
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• 2002

The purpose of this study is to conduct researches on the aspects of reconstruction and remodeling of low-rise, dilapidated apartment buildings in the provinces, using comparative methodologies, consequently coming up with the findings in the following. 1) Unlike the rebuilding projects in which the movement process tends to be made in a bulk (in a simultaneous manner), it turns out that when it comes to remodeling, it would be advisable to attempt moving the inhabitants as a group either by the size of their residence or by the building. 2) Given the peculiarities of the construction management mechanism, remodeling projects might seem disadvantageous on the part of the management on account of inadequate accumulation of information and experience. Hence, based on the impeccable assessment of the current status of the subject buildings from the phase of planning, its imperative to closely look into and take into consideration a variety of direct and/or indirect factors in advance of the implementation. 3) A series of comparative researches from the perspective of economical efficiency that remodeling projects appear profitable considering the overall costs including financial expenses, varied taxes, and so on that will be eventually brought forth during the reconstruction period, and all the more so when allowing for the consequential effects which they ought to have upon the natural and human resources, environmental and ecological condition, business potentials, etc. Amelioration to be desired on the basis of the findings above.

• Journal of Forest and Environmental Science
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• 제34권1호
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• pp.71-76
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• 2018

The long-tailed goral (Naemorhedus caudatus) has slowly recolonized habitats in South Korea. Because it is necessary to know the status of groups in recolonized areas, we determined detection frequencies and group sizes using camera trapping, a non-invasive monitoring method. In Uljin, a far southern goral habitat in South Korea, we used a Moultrie 5.0 camera and mineral block as bait during the breeding season in BaekAm Mountain (148 days, 18 May to 11 October) and Geumjong Mountain (63 days, 18 May to 18 July) in 2010. Totally, 155 images were captured in BaekAm Mountain, whereas four images were captured in Geumjong Mountain. The species was most frequently detected at sunrise (05:00-08:00) and sunset (18:00-20:00). Through population structure evaluation, we identified at least 11 individuals, including one solitary mature male, four females, four kids, and two solitary subadults in BaekAm Mountain. However, in Geumjong Mountain, we identified only two individuals (female with kid). Monitoring efficiency in the recolonized area differed depending on population density and habitat conditions. Because we could evaluate the population structure, and behavioral patterns in the study sites, monitoring using camera traps could be applied for the recolonized habitats in South Korea.

• 환경영향평가
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• 제12권1호
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• pp.1-8
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• 2003

The Master Plan of Natural Environment Conservation in Korea by Ministry of Environment has been carried out since 1986. The 2nd 10-year survey started in 1997, and there are three major parts in the Master Plan : First, the basic natural environment survey, second, sites in special features of ecological characteristics such as uninhabitable islands, wetlands, etc, and third, biological species featuring status of habitat, and population dynamics. However the information in the Master Plan is very fragmented and collected data are not so abundant due to insufficient man-power and unsynchronized survey time/season. In this regard this paper examined the similar National Biological Survey in USA and compared the differences with the Master Plan in Korea. The Master Plan in Korea should separate the management zone based on hydrological characteristics, and in each zone we should set a management goal in the long term basis. Secondly the species list is not so meaningful that we must concentrate more on research activities. In each taxonomical group we set up hypotheses and research goals. Thirdly local residents and communities should be involved in research so that enhanced biological diversity should benefit people in areas. Lastly legislation and laws should be reexamined and rectified to provide information to the managers that deals with natural resources, expecially when conflicting with economic matters.

• 식물분류학회지
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• 제50권4호
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• pp.403-412
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• 2020

Colonies of three independent gametophytes (one that is filamentous and two that are ribbon-like) without sporophytes occur in Gyeonggi-do, Gangwon-do, Gyeongsang-do, and Jeju-do, Korea. They have a moss-like appearance at first sight, with tiny plantlets and gemmae, and grow in cool, shaded, relatively deep dint places of large rocks, such as the small caves in high mountains, close to valleys. The gametophytes were identified based on morphological and molecular data by chloroplast DNA (cpDNA) sequence data (rbcL, rps4 gene and rps4-trnS intergenic spacer). Here, rbcL, rps4 gene and rps4-trnS intergenic spacer data of one independent gametophyte distributed in Korea have the same morphology, DNA sequence and monophyletic group as Crepidomanes intricatum from the eastern United States. They also share the same cpDNA data with Crepidomanes schmidtianum recently reported from Korea. The other independent gametophyte should be Hymenophyllum wrightii based on cpDNA data. The last one was presumed to be Pleurosoriopsis makinoi based on molecular data. The taxonomic status was confirmed to be the forma of Hymenophyllum wrightii through a revision of Hymenophyllum wrightii f. serratum based on molecular data.

• Proceedings of the National Institute of Ecology of the Republic of Korea
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• 제3권1호
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• pp.1-6
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• 2022

Among the 13 species of otters in the world, only one Eurasian otter (Lutra lutra) is found in South Korea. In the Korean Peninsula, otter pelts were historically valuable and expensive commodities used for international trade, and otters have long been poached as hunting animals. Recent rapid economic development in South Korea has increased habitat fragmentation and loss, creating a continuing threat to the natural environment. Otters live only in the area of rivers and streams as a family group and are territorial (linear habitat). Due to these limited conditions of otter habitat, the population size of otter is lower than that of onshore mammals. According to recent research, DNA analyses using microsatellite markers have shown that only approximately 7-21 otter individuals inhabit river systems for a length of 50-230 km. Korea's urban streams are associated with many threats that hinder otters from inhabiting them. Many areas around the urban streams are surrounded by high concrete riverbanks, and the risk of roadkill is also high. Nevertheless, ecological restoration projects in the urban rivers will contribute greatly to the stable inhabitation of otters. Detailed otter conservation strategies, such as the elimination of threat factors, improvement of habitat environment, and restoration of food resources and shelter, will provide a positive restoration effect on otter and river ecosystems as well.

• 반도체디스플레이기술학회지
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• 제22권1호
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• pp.104-112
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• 2023

Agriculture plays an industrial and economic role, as well as an environmental and ecological conservation role, group harmony and the inheritance of traditional culture. However, no matter how advanced the industry is, the basic food necessary for human life can only be produced through the photosynthesis of plants with natural resources such as the sun, water, and air. The Food and Agriculture Organization of the United Nations (FAO) predicts that the world's population will increase by another 2 billion people by 2050, and it faces a myriad of complex and diverse factors to consider, including climate change, food security concerns, and global ecosystems and political factors. In particular, in order to solve problems such as increasing productivity and production of agricultural products, improving quality, and saving energy, it is difficult to solve them with traditional farming methods. Recently, with the wind of the 4th industrial revolution, ICT convergence technology and artificial intelligence have been rapidly developing in many fields, but it is also true that the application of new technologies is somewhat delayed due to the unique characteristics of agriculture. However, in recent years, as ICT and artificial intelligence utilization technologies have been developed and applied by many researchers, a revolution is also taking place in agriculture. This paper summarizes the current state of research so far in four categories of agriculture, namely crop cultivation environment management, soil management, pest management, and irrigation management, and smart farm research data that has recently been actively developed around the world.

• 대한지역사회영양학회지
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• 제3권2호
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• pp.174-189
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• 1998

The purpose of this study was to evaluate the nutritional status and growth of Korean infants, who were atending peripheral community clinics in low income areas, by anthropometric measurements and estimating dietary intakes. Dietary intakes and growth were compared among different feeding patterns of 143 infants until age 9 months. The overall mean nutrient intakes of infants in this study were below the recommended allowances except the calcium intake from significant difference in each groups; however, calcium, zinc and iron intake of the formula fed infant(FF) was higher than the breast fed infant(BF) or the mixed fed infant(MF). Form ages 4-6 months, the nutrient intakes were shown to be higher in groups that were given supplementary foods than groups that were not. From ages 7-9 months, all nutrient intakes were higher in or the formula and supplementary foods fed(ESF) infants than in the breast and supplementary food(BSF) or the formula and supplementary food(FSF) groups, All subjets in this study showed a large Z-score. The growth of infants up to 6 months of age showed no significant difference in the feeding pattern, however, after 7 months of age the BSF group had significantly lower weight than the FSF or the ESF groups, There were significant positive relationships between infants weight gain at age 7-9 months from birth and the current protein or zinc intakes. As a result the average status of nutrient intakes of infants in this area was loser than the RDA, however, the growth pattern was fairly good. Although the breast milk is beneficial for infants, mothers should be educated for the importance of supplemental food and its practice to support good mutrition(Korean J Community Nutrition 3 (2) : 174-189, 1998)