• 한국조경학회지
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• 제31권6호
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• pp.53-63
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• 2004

Planting models for restoration forest on the seaside have been demanded because coastal reclaimed land has increased for habitation sites, industrial complexes and new towns on the west seaside of Korea. The planting models have to consider endurance for bad environmental conditions in order to make a role to protect the urban space against the extreme seaside environment. The dominant species, relative impotance value, individuals and species number were analysed in natural forests that were exposed to extreme seaside conditions in Deokjeok island and Younghung island, Incheon. The native species such as Pinus thunbergii and Pinus densiflora, which survive on the seaside, were mainly recommended because the coastal reclaimed land had extreme environmental conditions. Stable vegetation structures could be made by multi-layer planing by using these species. A diverse vegetation community could be made according to these planting models. The maritime forests made by these planting models might be more effective for environmental adaptation and a windbreak forest than alone tree, and the young trees below 3m height could easily adapt to these conditions.

• 한국지형학회지
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• 제24권4호
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• pp.91-101
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• 2017

The Okjukdong dune in Daecheong Island attracts national attention because of its unique landscape that is not covered by vegetation. However, there has been little knowledge on the timing of the dune formation, associated wind regime, and conservational strategies. In this study, we used OSL dating and grain size analyses to reveal the history of the dune development. In addition, we analyzed the wind regime in the dunefield which is surrounded by artificial coastal forest. The fine sand at Okjukdong underlain by a colluvial gravel layer indicates that the dune has been developed since at least 5 ka. Aeolian sands were found to be deposited around 700 years ago. The dunefield appears to have been severely eroded 30~60 years ago. The dune landscape has been destroyed after constructing a windbreak forest around the dunefield. The sand seems to be moving south and north with the season.

• 한국환경복원기술학회지
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• 제24권3호
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• pp.99-114
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• 2021

We examined a current status of damage in biodiversity and its causing factors in Hasidong Anin coastal dune, Gangneung-si, Gangwon province which is designated as ecological and landscape conservation area. In this study, we found that ecosystem and biodiversity have been primarily damaged by anthropogenic factors such as the construction of surrounding area, military facilities illegally dumped garbage and the expansion of windbreak forest. These factors occur to damage the landscape, ecosystem and biodiversity etc. There is a significant lack of basic data needed for preservation and restoration due to the lack of prior research and value assessment. In order to establish solutions for preservation and restoration, it is critical to collect fundamental data and implement value assessments. Therefore, further studies such as ecosystem services assessment, increasing biodiversity, spatial analysis and monitoring of various items related to coastal dunes are needed.

• 식물병연구
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• 제10권4호
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• pp.304-309
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• 2004

참다래 과수원에서 환상박피와 비가림시설은 꽃썩음병을 효과적으로 경감시켜주는 것으로 밝혀졌다. 참다래 개화기 약 45일 전인 4월 10일경에 참다래 주간부위에 20${\sim}$30 mm 폭으로 환상박피를 하면 꽃썩음병을 효과적으로 예방할 수 있었는데, 주간부위의 환상박피 높이는 방제효과에 영향을 미치지 않았다. 비닐을 이용한 비가림시설은 파풍망시설보다 비가림방식에 관계없이 꽃썩음병 예방에 효과적이었다. 참다래 개화기 약 75일 전인 3월 10일경에 부분비닐피복식 비가림시설을 하면 참다래 꽃썩음병의 발생을 거의 완벽하게 방제할 수 있었다. 환상박피와 부분비닐피복식 비가림시설은 참다래 과수원에서 환경친화적인 꽃썩음병 방제방법으로 실용화할 수 있을 것으로 기대된다.

• The Plant Pathology Journal
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• 제33권5호
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• pp.441-449
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• 2017

Citrus canker is an important bacterial disease of citrus in several regions of the world. Strains of Xanthomonas citri type-A (Xc-A) group are the primary pathogen where citrus canker occurs. After Xc-A entered the Northeast of Argentina in 1974, the disease spread rapidly from 1977 to 1980 and then slowed down and remained moving at slow pace until 1990 when it became endemic. Citrus canker was detected in Northwest Argentina in 2002. This paper presents the main steps in the fight of the disease and the management strategies that have been used to control citrus canker at this time. We think the process might be usefull to other countries with the same situation. Results from more than 40 years of research in Northeast (NE) Argentina indicate that we are at the limit of favorable environment for the disease. The severity of citrus canker is greatly affected by the environment and El $Ni{\tilde{n}}o$ Southern Oscillation (ENSO) phenomenon which causes cyclic fluctuations on the disease intensity in the NE region. Weather-based logistic regression models adjusted to quantify disease levels in field conditions showed that the environmental effect was strongly modulated by the distance from a windbreak. Production of healthy fruits in citrus canker endemic areas is possible knowing the dynamics of the disease. A voluntary Integrated Plan to Reduce the Risk of Canker has been in place since 1994 and it allows growers to export unsymptomatic, uninfested fresh fruit to countries which are free of the disease and require healthy, pathogen free fruits. The experience from Argentina can be replicated in other countries after appropriate trials.

• 대기
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• 제17권4호
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• pp.315-326
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• 2007

The effects of windbreaks on the reduction of suspended particles are investigated using a computational fluid dynamics (CFD) model with the ${\kappa}-{\varepsilon}$ turbulence closure scheme based on the renormalization group (RNG) theory. In the control experiment, the recirculation zones behind the storage piles are generated and, as a whole, relatively monotonous flow patterns appear. When the windbreaks with the 0% porosity are constructed, the recirculation zones are generated by the windbreaks and very complicated flow patterns appear due to the interference between the windbreaks and storage piles. The porosity of the windbreaks suppresses the generation of the recirculation zone and decreases the wind velocity in the windbreaks as well as that outside the windbreaks. As the emission of suspended particles from the storage piles are closely related with the friction velocity at the surfaces of the storage piles, variation of the friction velocity and total amount of the emission of the suspended particles with the height and porosity of the windbreaks are investigated. The results show that higher and more porous windbreaks emit less suspended particles and that the reduction effect of the porosity is still more effective than that of the height. In the case of the windbreak with 30 m height and 50% porosity, friction velocities above the storage piles are smaller than the critical friction velocity above which particles would be suspended. As a result, total amount of suspended particles are much fewer than those in other cases.

• 농촌지도와개발
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• 제23권4호
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• pp.347-359
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• 2016

Landscape characteristics and the culture of the sacred Dangsan forests located at Mulgeon village, Eunjeom village and Daejipo village in Mulgeon-ri, Namhae-gun were investigated. The potential of Dangsan forests for agricultural heritage, linked with paddy fields, has been discussed. Dangsan forest is a traditional village forest and a representative cultural heritage with a history of more than several hundred years. The Ministry of Agriculture, Food and Rural Affairs of Korea evaluates that the agricultural heritage is a new means and will provide a potential for the development of rural areas. The Dangsan forests were located in the neighborhood of paddy fields. The Dangsan forests are to be related to paddy fields in order to get attention as an agricultural heritage. Especially, the Dangsan forest of Mulgeon village was designated as Natural Monument ＃150 with the name, Windbreak forest of Mulgeon-ri, Namhae. It was suggested that the national monument to rename as Dangsan forest of Mulgeon village, Namhae. The size of this forest was measured to be 735 m in length and 31 m in width. Mulgeon-ri will be better recognized as a candidate place of agricultural heritage with three Dangsan forests associated with paddy fields.

• 생물환경조절학회지
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• 제29권4호
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• pp.448-455
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• 2020

본 연구에서는 서리의 피해 저감을 위하여 과수 무봉지 재배를 목적으로 사용하고 있는 그물망을 이용하고자, 서리의 양을 관측하는 장치를 대조구와 시험구에 설치하여 그 비교를 통해 서리 저감 효과를 구명하였다. 시험 결과 실제 서리가 관측된 날을 기준으로 시험구에서 37%에서 59%까지 저감 효과를 확인할 수 있었다. 또한 서리의 양을 자동으로 관측하는 장치를 개발하고 풍동실험을 통해 서리 측정 장치의 방풍함 높이를 30 cm로 결정하였다. 이러한 연구 결과는 그물망 설치함으로써 과수 개화기에 서리 피해를 저감할 수 있을 것으로 판단되며, 그물망의 농업적 이용에 대한 기초자료로 활용될 수 있을 것으로 기대된다.

• 한국의상디자인학회지
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• 제14권4호
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• pp.179-190
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• 2012

During recent few years, Bike is arising as one of the most important item of sports market. As well as in domestic markets, customers are demanding specific brands only for young aged riders. Therefore, this study researched current bike wears and suggest digital textile printing with sports wear trends which also have safety and visual impact effectiveness, so it can be satisfied as green products and we also try to suggest sports sensitivity of existing cycle wear to city fashion. The purpose of this study is to figure out 20's-30's female biker attitude for bike wear and their purchasing habits and also their preference, digital textile design of city biker wear based on present condition research of riding wear markets and to establish high quality products with occupying high percentage of global markets and making high profits. For this study, bike wear distributors Survey First, foreign companies generally meet evenly sampling the 20s and 30s targeted vendors 10 companies were selected. 'city sporty ware' or 'casual line' dual 'extreme line' from all manufacturers, including, however did not distinguish it from all the vendors. This higher proportion of the recent upsurge in public and non-professional riders, despite the fact that you can see that the lack of 'Extreme line' compared to the 'casual' line of the city sporty ware production. overall seasonal sales in the spring appeared windbreak jacket, leggings and sweat emissions and at the same time built into the fabric dry faster T-shirt and shorts in the summer sales were higher. autumn jacket and produced excellent warm in winter fleece fabric T-shirts, pants, windshield jacket higher sales. showed improvements in design, improved in the order of the highest and perfect for everyday wear for both. As mentioned, we figure out 20's-30's female rider's attitude for riding suit and their purchasing habits and also their preference, so we can develop riding suit design based on their needs and suggest new design patterns.

• 한국가스학회지
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• 제23권4호
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• pp.28-39
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• 2019

OGI(Optical Gas Image) 기술에서 주요 가스의 이미지 특성연구는 누출가스의 종류 파악 및 배출량 추정의 기초자료가 될 수 있다. 본 연구의 목적은 산업에서 중요한 methane과 propane 두 탄화수소의 분출가스 이미지의 차이를 관찰하기 위함이다. 적외선을 투과하는 성질을 지닌 석영을 끼운 바람차단막을 제작하여 methane과 propane을 동시에 누출하게 하여 적외선 OGI 카메라로 촬영하고, 그 영상을 분석하였다. 석영차단막이를 활용하여 바람의 영향을 최소화하여 안정된 영상을 확보하였다. 누출 기준값을 1 L/min로 하여 두 탄화수소의 영상을 분석한 결과 OGI 카메라로 쉽게 식별 가능한 거리가 methane의 경우 6 m, propane의 경우 9 m로 나타났다. 적외선 카메라와 누출지점의 거리 1~10 m까지에서 propane의 경우가 methane의 경우 보다 gas plume의 크기가 컸으며 선명하였다. 영상 이미지의 점의 수로 비교하면 propane이 methane보다 평균 3.8배 많았다.