• 한국농공학회논문집
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• 제62권1호
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• pp.95-104
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• 2020

The purpose of this study is to develop a pipe type soil sampler that can easily collect soil cross section servey and soil samples to conduct ecological environment surveys while minimizing ecological disturbance in the area subject to soil survey. Furthermore, this study develop the exponential type estimation specific weight formula (ESWF) that uses pipe type soil sampler to easily carry out soil cross section survey and soil sample while estimating the specific weight of the area using water content and soil sample length variation ratio (SLVRs) and to obtain apparent specific gravity, hardness, and max. porosity which are used as growth of corps and ecological environment index. The calibration results of ESWF showed a high degree of significance, with NSE for actual specific weight (γ₀) and calibration estimation specific weight (γ_ec) 0.95, R² for 0.954, and RMSE for 0.051. The verification results of ESWF showed a high significance, with NSE for actual specific weight (γ₀) and verification estimation specific weight (γ_ev) 0.881, R² for 0.978, and RMSE for 0.055.

• 한국환경농학회지
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• 제33권1호
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• pp.1-8
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• 2014

BACKGROUND: Recent studies using many amendments for heavy metal stabilization in soil were conducted in order to find out new materials. But, the studies accounting for the use of appropriate amendments considering soil pH remain incomplete. The aim of this study was to investigate the effects of initial soil pH on the efficiency of various amendments. METHODS AND RESULTS: Acid soil and alkali soil contaminated with heavy metals were collected from the agricultural soils affected by the abandoned mine sites nearby. Three different types of amendments were selected with hypothesis being different in stabilization mechanisms; organic matter, lime stone and iron, and added with different combination. For determining the changes in the extractable heavy metals, water soluble, Mehlich-3, Toxicity Characteristic Leaching Procedure, Simple Bioavailability Extraction Test method were applied as chemical assessments for metal stabilization. For biological assessments, soil respiration and root elongation of bok choy (Brassica campestris ssp. Chinensis Jusl.) were determined. CONCLUSION: It was revealed that lime stone reduced heavy metal mobility in acid soil by increasing soil pH and iron was good at stabilizing heavy metals by supplying adsorption sites in alkali soil. Organic matter was a good source in terms of supplying nutrients, but it was concerning when accounting for increasing metal availability.

• 한국농공학회:학술대회논문집
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• 한국농공학회 1999년도 Proceedings of the 1999 Annual Conference The Korean Society of Agricutural Engineers
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• pp.185-191
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• 1999

In a mean time, arrangement of a arable land is lead by government with same way, same type. It means that there are no considering on characteristic features of region and aspect of ecological environment that can experess its natural charactersistics. Because whenever there is needed to be arranging , most of structure are made by a ward office from a desgin to a execution so that cause many public resentment and durability is very short by a inappropriateness its maintenance. The purpose of this study is divided into four parts ; First, to form the naturally favorable waterside spaces by performing the basic water controlling funtions of the irrigation channel and the drainage channel. Second, to provide the meeting place of the residents and to restrore the ecological system by means of the formation of the naturally favorable waterside spaces. Third, to lead to the optimal design and maintenance that residents want by inviting the residents to participate at the begining stage of planning. A district of this study is located on Songsam(13-14 zone), Samseung-Lee Ganam-Meon Yeoujoo-Gun Jyonggi Province and a length of section is 420m. This study came up with the following results. First, estabished the type of design and area of the area by means of the collected residents' opinions. Seconds, changed the straight line water channel already designed to the curve water channel . Third changed the structure materials of the steel concrete structure to the natural materials . Fourth, change dthe design by area for the ecological system and the meeting place of the residents. Fifth, divided the whole area into fourth area in order to satisfy the residents' requests.

• 농촌계획
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• 제28권1호
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• pp.99-108
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• 2022

This study measured the importance and satisfaction of the values related to 'New Ruralism' using the IPA(Importance-Performance Analysis) technique by the rural leaders' group. In the result, the satisfaction value was evaluated lower in the importance of 'landscape and ecological resource conservation', 'settlement environment', and 'population' related items. On the other hand, the items of 'tourism resource management', 'landscape damage', and 'landscape and ecological resource conservation' showed high satisfaction. Therefore, the leaders' group of Gochang-gun perceived the importance of local tourism image, landscape damage prevention, settlement environment, and rural landscape in 'New Ruralism' management. However, the leaders' group valued lower in the items of population, ecological value and natural and historical tourist sites. This seems to be a characteristic of the leaders' group mainly engaged in agriculture. Through factor analysis, the six items excluded from the analysis were considered important factors in 'New Ruralism' in Gochang-gun through a review of previous studies. Still, the leaders' group of Gochang-gun did not recognize them as important items in the rural resource. However, these items will be able to contribute to the development of 'New Ruralism' in Gochang-gun, and it is necessary to improve the awareness of the leader group. Even if local governments or experts present an ideal goal for rural development, it is difficult to achieve the goals if there is a difference from the perception of residents. Therefore, it is important to understand the perception of 'New Ruralism' of the leaders' group who plays an important role in regional development projects.

• 한국산림과학회지
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• 제96권6호
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• pp.750-755
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• 2007

본 연구는 2004년-2005년 민가시오갈피나무를 가해하는 오갈피나무이의 생태적 특성을 구명하기 위해 수행되었다. 알의 형태는 촛불모양이며 길이는 $0.40{\pm}0.03mm$이다. 약충은 5령기를 거치며 1령 약충의 체장은 $0.36{\pm}0.03mm$, 종령약충의 체장은 $2.50{\pm}0.25mm$이다. 1년에 2세대를 경과하며, 제 1세대 성충의 우화기간은 7월 중순부터 8윌 상순까지였고, 최성기는 7월 하순 이었다. 제 2세대 성충의 우화기간은 9월 중순부터 10월 상순까지였고, 최성기는 9월 하순 이었다. 월동한 성충은 4월 상순부터 5월 하순까지 월동처에서 오갈피나무의 잎이나 줄기로 이동하기 시작하였고, 이동 최성기는 4월 히순 이었다. 월동성충(♀)은 민가시오갈피나무의 개엽된 잎이나 새로 성장한 줄기를 선호하며, 제 1세대 성충은 종실이 형성되기 시작할 때 주로 종실사이에 산란하나 일부는 가지에도 산란하였다. 성충의 포란수는 $57.5{\pm}23$개 이었다.

• 한국환경복원기술학회지
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• 제11권5호
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• pp.38-59
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• 2008

This research has a meaning to provide basic data for eco-friendly way of district unit plans and ecological landscape planning by evaluation of biotope preservation value at the level of district unit and designating land development of the site, the whole area of Sinseo-dong (Dong-gu, Daegu metropolitan city) for research site. The summary of analysis result is as follows. As a result of classification of biotope types on the research site, it is divided into 11 biotope groups such as a residential biotope group and 51 specific biotope types which is subordinate to the groups. As a result of the first value assessment on classified biotope types, there are 16 types of natural rivers which is full of vegetation as a I class. Also it is analysed as 9 types of IIclass, 14 of IIIclass, 8 of IVclass, and 4 of Vclass. In particular, in light of a wildlife habitat, EB, in case of broad-leaved tree of mixed forest assessed as a II class, was classified into Iclass which is one-step upgraded as a final class with the analysis as there is a structural characteristic (more than 71% of low density, 50 years of age-class). As a result of second assessment, it is analysed that there are 17 special sites (1a,1b) and 33 special sites (2a, 2b, 2c) respectively for preservation of species and biotope. Particularly, in case of the No. 27 space, it was assessed that it has the value of about medium (IIIclass) level, but its value was upgraded with the on-spot detailed investigation that most of Aristolochia contorta, designated as a rare plant by Ministry of Environment, is growing. It is regarded that the above-mentioned research result on evaluation of biotope preservation value is expected to provide very important basic materials for future district unit plans and smooth integration with landscape ecology plans and eco-friendly space development.

• KIEAE Journal
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• 제10권5호
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• pp.63-69
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• 2010

Recently, by the increase of demand on Super High-rise mixed-use housing and it's advanced quality, the interest on it has been raised socially. In accordance with it, the matter of resident's health and energy efficiency has been controversial in terms of living in super high-rise housing. This study started from the idea that it is necessary to have an objective data which that has many residents in narrow space with high density. The purpose of this study are as follows; Firstly, with the quantitative data analysis on energy, it will confirm the objective information on the unclear negative idea of super high-rise mixed-use housing. Secondly, it will establish the fundamental data on the energy of super high-rise mixed-use housing by examining the characteristic of energy consumption of the complex which was built more than 5 years ago. There are 4 methods of this study. Firstly, it follows the steps of theoretical view, and defines concept to study on the characteristic of super high-rise mixed-use housing. Secondly, referring to the previous study, it provides better understanding on th stream of this research and the limit as well to guide the direction in terms of energy consumption. Thirdly, it evaluates the characteristic of monthly consumption by researching the use of electricity energy and heating energy of super high-rise mixed-use housing. The major conclusions of this study are as follows; Firstly, the heating use of apartment complex is same, which is not influenced by the type of the building. Secondly, the electricity use of super high-rise mixed-use housing is from 1,2 to 1.5 as high as the normal apartment.

• 한국환경복원기술학회지
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• 제7권2호
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• pp.75-86
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• 2004

This study aims to figure out ecological characteristic of natural forests focusing on vegetation as a way of ecological renovation for the restoration of naturalness for golf courses that were constructed in the Country and to present vegetation models and appropriate tree species for the purpose. The study site is P golf club, which is located in Gapyong-gun, Kyeonggi Province. The site is within a forest where the grade from the natural ecology map is the first one and the level from the green index accounts for the eight, thus showing a typical environment for a golf course in terms of location. The location of the site explains a reason for restoration. The major substance of the study is to conduct ecological evaluation of vegetation structures around and inside the golf course and to present a vegetation model. In order to evaluate the ecological characteristics of the vegetation structures, the analysis of the study covered succession stages, multi-layer vegetation structures and species diversity. Plant communities that have high species diversity were selected for the vegetation model and proper density and species were proposed considering the number of species and individuals and distances between trees. The vegetation restoration model targets succession into an oak forest. Within a unit of 100 $m^2$, the recommended model include a tall-tree layer with 11 trees such as Quercus serrata and Quercus mongolica, a sub-tall-tree layer with 12 trees including Quercus mongolica, Quercus serrata, Prunus sargentii, Fraxinus rhynchophylla and Acer pseudo sieboldianum, a shrub layer with 32 trees from 16 species, and a grass layer with a cover rate of 45 %. The proposed vegetation restoration model needs to apply to : 1) damaged natural forests by the construction of golf courses; 2) boundaries between golf courses and surrounding forests; 3) buffer zones; 4) open spaces in between courses; and 5) areas between greens and tees where open spaces are available in a mass. In conclusion, one of the most important factors in presenting a vegetation model for the restoration of naturalness in the golf course and other damaged forests is to provide multi-layer vegetation structures that are composed of native species. As for the specific application for the site, it is recommended to manage the vegetation in such a way that the environment of the site can have a similar environment to the surrounding forest which is expected to succeed into an oaks-dominant one.

• 한국콘텐츠학회논문지
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• 제13권9호
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• pp.178-192
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• 2013

본 연구는 노년기의 부부갈등요인(의사소통, 가정생활, 공격행동, 경제갈등)과 생태체계요인(개인, 가족, 사회)이 황혼이혼(이혼생각, 이혼시도)과 범죄충동(폭력, 자기중심성, 가출)에 미치는 영향을 파악하고자 하였다. 연구 대상으로는 수도권에 거주하는 55세 이상의 기혼 노인 350명을 대상으로 하였다. 그 중 결측치를 제외한 332부를 최종 분석하였다. 자료 분석은 SPSS 18.0 프로그램을 이용하여 빈도분석, 요인분석, 신뢰도 분석 및 t-test, ANOVA, 위계적 회귀분석과 Scheffe test로 분석하였고 연구결과는 다음과 같다. 첫째, 부부갈등과 생태체계가 가정생활에서의 갈등이나 폭력적인 공격행동, 의사소통 및 경제적인 부분에서의 갈등이 심할수록 황혼이혼에 미치는 영향이 높아진 것으로 분석되었다. 둘째, 부부갈등과 생태체계가 가정생활에서의 갈등과 배우자의 공격적인 행동으로 인한 갈등, 경제적인 갈등, 자기중심성충동이 높을수록 범죄충동에 미치는 영향이 높아진 것으로 분석되었다. 셋째, 인구사회적 특성에 따른 부부갈등, 생태체계, 황혼이혼 및 범죄충동 차이는 모든 분야(성별, 학력, 직업, 자녀동거여부, 종교, 건강상태, 월평균 소득)에서 통계적으로 유의한 차이가 있었다.

• 한국물환경학회지
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• 제25권2호
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• pp.235-244
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• 2009

The purpose of this study is to offer information about the current river conditions and basic data of streams in Busan city, by selecting 20 underground streams and evaluating their multilateral stream assessment. Concerning the evaluation of streams, 4 sections including the general index, the bank index, the river characteristic index, and the ecological environment characteristic index were evaluated. Ahead of the evaluation, the study divided Busan city into 4 zone for a systematic river investigation. Then, the study allocated code names to each river, and conducted literature research and a field survey of streams. Based on this, the study applied the evaluation of multilateral stream assessment. As a result, out of 4 entire grades, there was no grade 1 or grade 2. Instead, 35% were grade 3, 60% were grade 4, and 5% were grade 5. When looking into the evaluation results by Zone, the Dongbusan Zone showed the highest index, and the Suyeonggang Zone, the Jungbusan Zone, and the Nakdonggang Zone followed, in order.