토양의 물리적 조건이 은수원사시나무 ( Populus alba × P . glandulosa ) 의 생장 및 근계발달에 (根系發達) 미치는 영향 - 용적중을 (容積重) 중심으로

민일식,이수욱 ( Ell Sik Min,Soo Wook Lee ) 한국산림과학회 1984 한국산림과학회지 Vol.66 No.1

This experiment has been made to find out the influence of soil bulk density on growth and root development of Pnpulus alba × P. glandulosa in Buyeo-kun, Chungnam. Bulk density and porosity significantly change according to slope position and soil depth and have a significant effect on tree height, DBH, biomass, and the distribution of root development. The results extracted from the experiments are as follows; 1 j Bulk density in average changes from 1.17 g/㎤ (1.05 ∼ 1.40) in lower slope position to 1.43 g/㎤ (1.36 ∼ 1.60) in upper slope position, and porosity from 52.65% (55.05 ∼ 45.50) in lower slope position to 41.20% (43.81 ∼ 37.21) in upper slope position. 2) Bulk density increases significantly with soil depth. 3) Tree height, DBH, and total biomass decrease with bulk density. 4) Foliage, branch, holewood, bolebark, and root also significantly have a negative correlation with hulk density. 5) Populus alba × P. glandulosa has a shallow root system chietly distributing only in AI horizon, and critical bulk density is 1 40 g/㎤. Therefore, slope position, hulk density, and porosity are considered to influence on the growth, biomass, and root development of Populus alba × P. glandulosa.

충남 금산 폐탄광지역의 토양 , 하상퇴적물 및 토양수의 이화학적 특성

민일식,김명희,송석환 ( Ell Sik Min,Myung Hee Kim,Suck Hwan Song ) 한국산림과학회 1997 한국산림과학회지 Vol.86 No.3

The research has been made for the effects of the pollution by the abandoned coal mine drainage on the physical and chemical properties of soil, stream sediment and soil water. The soils overspreaded by the abandoned coal don`t develop solum and the bulk density is 1.838/㎥, compared with 1.191.38g/㎥ in the other forest soils. The soil pH range in coal bearing region ie, from 4.01 to 4.11 and non-coal bearing soil range is from 5.03 to 5.13. Heavy metals such as As, Cr, Ni, Mo and Ba of coal bearing soils and polluted stream sediments have larger concentration than those of non-coal content and non-polluted. F_specially As and Mo concentrations are largely high in coal bearing. The relative ratios K₂O/Na₂O of geochemical elements are higher in coal bearing soil and polluted stream sediments than those of non-coal bearing soils and non-polluted stream sediments as well as black shales of the Changri Formation. However, MgO+Fe₂O₃+TiO₂/CaO+K₂O are the opposite trends, so that the ratios are lower in the polluted regions. The soil water pHs in the polluted regions are the strong acid(pH3.4-4.2) and buffer capacity of the polluted soil is low because canons such as Na^+, K^+, Mg^(+2) are leached by the acidification.

계룡산 국립공원 방문객의 방문선택 결정을 위한 IPA 분석

민일식(Min, Ell Sik),이용철(Lee, Yong Chul) 한국산림휴양복지학회 2015 한국산림휴양학회지 Vol.19 No.4

본 연구는 계룡산국립공원을 방문한 방문객들을 대상으로 방문시 선택결정요인의 특성을 파악함으로써 국립공원이 가지고 있는 긍정적 이미지를 부각시킴으로써 국립공원의 관광자원개발 및 방문객의 지속적인 방문을 통한 국립공원의 활성화에 도움이 되고자 하였다. 본 연구의 목적을 달성하기 위하여 대응표본 t-검증과 IPA(Importance-Performance Analysis)분석을 활용한 결과, 첫째, 계룡산 국립공원의 방문선택결정 요인은 방문시 중요도와 방문경험 후 성취도에는 차이가 있는 것으로 분석되어 귀무가설이 기각됨으로써 국립공원 방문객들의 방문선택결정요인에는 차이를 보이고 있었다. 둘째, 계룡산 국립공원 방문결정 선택요인의 중요도에서 성취도를 뺀 값은 성취도를 가늠할 수 있는 지표이다. 본 연구 결과 모든 항목에서 양(+)의 값이 도출됨으로써 중요도에 비해 성취도가 매우 낮은 것으로 분석되었다. 마지막으로 IPA분석결과, 유지측면은 편의시설 및 접근성의 변수가 포함되었다. 집중측면은 국립공원 운영 및 관리성, 구매성의 변수가 포함되었다. 저순위측면에는 프로그램성이 포함된 것으로 분석되었다. The purpose of this research is to enhance the tourists’ visits to the National Park by highlighting the positive images of the National Park by characterizing the factors affecting the site selecting decisions of the visitors of Gyeryongsan National Park. To achieve this goal, we have used IPA (Importance-Performance Analysis) and the paired T-test on the corresponding samples and we have obtained following results. Firstly, as for the factors affecting the selecting decisions, there is a distinct difference between the visiting importance and post-visit achievement so the null hypothesis is rejected, hence the factors affecting decisions are different from Selecting Decision Factors. Secondly, the importance of selection factor with the achievement removed becomes an index to estimate the postvisit achievement. From the result of this research, all the items turned out to be positive (+) and thus the achievement is low when compared to the importance. Lastly, from the result of IPA, accessability and convenience facilities were considered into keeping up the good work criteria. The concentration aspect included the operation, the management and the purchase capability of the National Park. The low priority aspect includes the programmability.

경상북도 안동 사문암지역의 모암, 토양 및 식물체 내 중금속 함량

민일식 ( Ell Sik Min ),송석환 ( Suck Hwan Song ),김명희 ( Myung Hee Kim ) 한국환경생태학회 2000 한국환경생태학회지 Vol.13 No.3

인공산성우가 삼림토양의 (森林土壤) 완충능에 (緩衝能) 미치는 영향

민일식(Ell Sik Min),이수욱(Soo Wook Lee) 한국산림과학회 1990 한국산림과학회지 Vol.79 No.4

A research effort has been made to determine soil buffer capacity in forest soils nearby urban and industrialized regions. Buffer capacities of soils from four regions were measured by different pH levels of artificial acid precipitation, The following conclusions have been drawn in response to the overall research objectives. Soil Suffer capacity was the highest in Kangwondo followed by Uisan, Yeochon and Seoul when simulated acid precipitation were treated at the level of pH 3.0-5.7. With the acid precipitation treatment below pH 2.0 level, however, the capacity dropped seriously with rno significant differences between the regions. In Kangwondo region soils weathered from granite and limestone showed significant differences in the buffer capacities. Soil collected in Seoul and Ulsean revealed that the capacities tended to increase with the distance from the pollution sources when treated at pH 3.0, 4.5 and 5.7 level of acid precipitation. The major mechanism of soil buffer observed during simulated acid precipitation experiment was canon exchange for Kangwondo forest soils. In Seoul region canon exchange also played an important role in soil buffering under artificial acid precipitation between 3.0 and 5.7 pH levels, yet under pH 2.0 level aluminum and silicate hydrolysis. In Ulsan canon exchange was a msjor determinant for the buffer capacity above pH 4.5 level, between pH 3.0-4.5 aluminum hydrolysis and below pH 3.0 aluminum and silicate hydrolysis. In Yeochon silicate hydrolysis led buffer capacity above pH 4.5 and below pH 4.5 aluminum hydrolysis.

충남 백동 사문암지역의 토양 및 식물체내 중금속 함량 -소나무 및 리기다소나무를 중심으로-

민일식 ( Ell Sik Min ),송석환 ( Suck Hwan Song ),김명희 ( Myung Hee Kim ),장관순 ( Kwan Soon Jang ) 한국환경생태학회 1999 한국환경생태학회지 Vol.12 No.3

서로 다른 모암과 토양의 미량원소 특성 및 리기다소나무의 원소 함량

민일식 ( Ell Sik Min ),김명희 ( Myung Hee Kim ),송석환 ( Suck Hwan Song ) 한국환경생태학회 1998 한국환경생태학회지 Vol.12 No.1

인삼과 토양의 주 원소 함량 관계 : 금산 지역을 근거로

민일식(Ell-Sik Min),송석환(Suckhwan Song) 고려인삼학회 2009 고려인삼학회 학술대회 Vol.2009 No.5

산화에 의한 산림환경변화가 토양의 특성에 미치는 영향

남이,민일식,장관순,박관수,이윤원,Nam, Yi,Min, Ell-Sik,Chang, Kwan-Soon,Park, Kwan-Soo,Lee, Yoon-Won 한국지하수토양환경학회 1998 지하수토양환경 Vol.3 No.2

본 연구는 충남 금산군에 위치한 산화적지에서 산화후 개벌지역과 비개벌지역을 대상으로 산림식생의 존재여부가 산림토양의 이화학적 성질 변화로 인한 수저유능력에 미치는 영향을 파악하기 위해 가비중, 공극율(조공극 및 세공극), 투수성, 통기성 및 유기물 함량을 비교 분석하였다. 주요 측정인자들에 의해 얻어진 결과는 다음과 같다. 산화지역의 비개벌지 및 개벌지에서 토양 통기성과 투수성을 측정한 결과 비개벌지가 개벌지 보다 양호하였으며, 특히 산정보다는 산록부근에서 가장 큰 차이를 보였다. 또한 산화 뒤 2년이 경과된 후 가장 큰 변화가 나타난 부분은 표토 5∼15cm층이었다. 토양공극 분포는 비개벌지가 개벌지 보다 전공극, 조공극, 세공극이 높게 나타났으며, 토심이 증가함에 따라 전공극량과 조공극량은 감소하였다. 토양가비중은 비개벌지가 개벌지 보다 낮게 나타났으며, 토심이 증가할수록 높게 나타났다. 또한 산록>산복>산정 순으로 통기성, 투수성, 전공극 등이 동일하게 나타났다. 유기물함량은 비개벌지가 개벌지 보다 높았으며 토심이 증가할수록 감소하였다. 토심의 증가에 따라 토양가비중은 정의 상관관계를 나타냈고, 전공극량, 조공극, 통기성, 투수성 및 유기물함량은 부의 상관관계를 나타내었다. 산화적지에서 개벌에 따른 산림환경 변화는 토양의 물리성 및 화학성을 악화시키는 것으로 나타났다. This research has been made for influence of forest environmental changes, such as tree-clearcutting affecting to soil chemical and physical properties, on water storage capacity at forest fire land in Keumsan, Chungnam. The analyzed factors were bulk density, porosity, field moisture saturated hydraulic conductivity air permeability and organic matter content, Field moisture saturated hydraulic conductivity and air permeability at uncutting sites were higher than those at clearcutting sites, especially the most differences were appeared at lower slope. After 2 years passed since forest fire, the most changeable parts of soil characteristics were 5-l5cm depth below soil surface. Total Porosity, coarse pore and fine pore at uncutting sites were higher than those at clearcutting sites. Also, as soil depth increased, total porosity and coarse pore were decreased. Bulk density at uncutting sites was lower than that at clearcutting sites, and was decreased as soil depth increased. The order of the change trend in field moisture saturated hydraulic conductivity, air permeability and porosity was slope lower>middle>upper. Organic matter content at uncutting sites were higher than those at clearcutting sites, and decreased as soil depth increased. As soil depth increased, bulk density had the positive correlation, in other hand, porosity, coarse pore, field moisture saturated hydraulic conductivity, air permeability and organic matter content had the negative correlation. It was concluded that forest environmental changes by forest fire degrade soil physical and chemical properties.

금산(錦山) 대성탄철지성(大成炭鐵地城) 산성폐수(酸性廢水)에 의한 오염(汚染)

송석환,민일식,김명희,이현구,Song, Suckhwan,Min, Ell Sik,Kim, Myung Hee,Lee, Hyun Koo 대한자원환경지질학회 1997 자원환경지질 Vol.30 No.2

This study is for extent of polluted area by acid mine drainage from the Daeseong coal mine, Keumsan. Black shales of the Changri Formation containing the Daeseong coal mine are geochemically similar to those from the North America as well as Europe. Comparing with geochemical compositions and relative ratios, coal bearing and non-coal bearing soils are similar to the stream sediments influenced and not influnced by the acid mine drainage, respectively. These characteristics suggest that acidification of the soils and of the stream sediments are related to the the coal bearing black shale. Soil waters beneath the coal bearing soil have low pH and high cation contents than those beneath non-coal bearing soil, suggestive of extractions of cations with increasing oxidizations within the soils. Surface waters show that those influenced by the acid mine drainage are low pH, and have high $SO_4{^{2-}}$, $Mg^{2+}$, $Fe^{2+}$, Mn and slightly lower DO, suggesting that heavy pollutions have been progressed in these area. Geochemical comparisons between the polluted surface water and adjacent black shales suggest that pollutions of the surface water are related to the black shales.