수경재배법에 의한 소나무 묘목의 생장 및 영양상태에 미치는 Mn의 영향

진현오,이충화 경희대학교 생명자원과학연구원 2000 硏究論文集 Vol.21 No.-

The effects of various levels of Mn concentration on growth and nutrient status of 2-year-old Pinus densiflora seedlings grown in a nutrient culture solution were investigated. Mn concentrations was added as manganese chloride at 0, 30 or 60 ppm to the nutrient culture solution. The nutrient culture solution was maintained at pH 4.0 by adding HCl or NaOH solution. The seedlings were transplanted into the nutrient culture solution and grown in a greenhouse for 90 days. The treatment 60 ppm of Mn concentrations induced a significant reduction on the dry weight growth of the seedlings. The relative growth rate (RGR) and net assimilation rate (NAR) of the seedlings were reduced with increasing of Mn concentrations in the nutrient culture solutions. This result suggests that reductions in the RGR and NAR of the seedlings were manly due to the inhibition of net photosynthesis.

落葉闊葉樹林에 있어서 林內外雨의 樹種特性에 關한 硏究

陳鉉五 경희대학교 부설 식량자원개발연구소 1996 硏究論文集 Vol.17 No.-

The amount and nutrient deposition of precipitation, throughfall, and stemflow to the forest floor were investigated in a deciduous broadleaved forest on the north Kanto region of Japan. The results can be summarized as follows; 1. For the amount of stemflow to the forest floor, there was found a clear difference by height class. The ratio of stemflow to total stemflow on tree layer, shrub layer and sub-tree layer were 46%, 44% and 9%, respectively. 2. On the vertical changes of throughfall at each crown layer, showed significant increases in the concentrations for cations and anions, probably, to nutrient leaching contributed by the canopies of the shrub layer. 3. As the nutrient characteristics of stemflow and throughfall by the shrub layer have an effect on the internal dynamics of matter, monitoring nutrient cycle of shrub layer is important to maintaining a sound forest ecosystem.

地被狀態의 差異에 따른 浸透能 比較

陳鉉五 경희대학교 부설 식량자원개발연구소 1993 硏究論文集 Vol.14 No.-

同一立地條件 下에서 分布하고 있는 地被狀態의 差異에 따른 浸透能의 比較·檢討를 目的으로 硏究를 遂行하였던 바 다음과 같은 結果를 얻었다. 1. 林地와 裸地의 浸透能 比較에서 各各 120∼210㎜/hr의 값을 나타내어 裸地에 比하여 林地의 浸透能이 良好하였다. 2. 林地의 地被狀態를 區分하여 闊葉樹林과 針葉樹林의 浸透能比較에서는 闊葉樹林의 浸透能이 良好하였으며, 針葉樹林의 樹種間 比較에서는 잣나무, 落葉松, 리기다林 順으로 浸透能이 良好하였다. 3. 林地에 있어서 Ao 除去狀態에서의 浸透能은 自然狀態에서의 浸透能에 比하여 5∼25㎜/hr의 減少를 보였으나, 잣나무林에서는 菌絲網層의 發達로 오히려 증가하는 傾向을 보였다. 4. 浸透能에 關與하는 土壤의 性質은 表層土의 最小容器量(0.706^(**))과 有機物(0.638^(**))로 나타났다. This study was carried out to investigate the comparison of the infiltration capacity at five land-cover types(P.koratensis, P.rigida, L leptolepis, broad-leaved forest and bare land) having similar topographic factors. The results can be summarized as follows. 1. According to the results of measurement there was found a clear difference in the infiltration capacities between forest land and bare land. The infiltration capacity of the forest land and that of the bare land were 120∼210㎜/hr, 100㎜/hr, respectively. 2. When the cover type was subdivided, it was found that the infiltration capacity of the broad-leaved forest was higher than that of the needle-leaved forest. Each tree species of needle-leaved forest could be arranged in the following order of high infiltration capacity: P koraiensis>L leptolepis>P rigida 3. In the measurement of exposed condition on the ground surface, the was in filtration capacity decreased 5∼25㎜/hr compared with the natural condition in general. On the contrary, at the P. koraiensis forest, it was increased by containing the mycelium net in the litter there. 4. As to the relation between the infiltration capacity and the soil properties, high correlations for the infiltration capacity was recognized among the minimum air capacity(0.706^(**))and organic matter(0.638^(**))in the surface soil.

인공산성우(人工酸性雨)가 잣나무 묘목(苗木)의 생장(生長), 영양상태(營養狀態) 및 토양산성화(土壤酸性化)에 미치는 영향(影響)

진현오,김은영,이충화,Jin, Hyun-O,Kim, Eun-Young,Lee, Choong Hwa 한국산림과학회 2000 한국산림과학회지 Vol.89 No.3

화강암 모재의 갈색산림토양에 3년생 잣나무(Pinus koraiensis) 묘목을 이식하여 1999년 4월 21일부터 11월 17일까지 210일간 pH 5.6(대조구), 4.0, 3.0, 2.5 및 2.0의 인공산성우를 조제하여 살포한 결과, 잣나무 묘목의 가시장해는 pH 2.5 및 pH 2.0 처리구에서 관찰되었다. 잎과 뿌리 그리고 개체 건중량은 대조구에 비해 pH 2.0 처리구에서 유의적으로 감소하였으며, T/R비는 타 처리구에 비해 pH 2.0 처리구에서 현저히 증가하였다. 잣나무 묘목의 각 기관내 원소성분을 분석한 결과, 잎의 Ca, P농도 및 chlorophyll함량은 대조구에 비해 pH 2.0 처리구에서 증가하는 경향을 보였으며, N농도는 모든 기관에 있어서 처리구 pH가 감소함에 따라 증가하였다. 잣나무 묘목을 육성한 토양을 분석한 결과, 처리구의 pH가 감소함에 따라 토양 pH가 저하되고 Ca, Mg, Al 및 Mn 농도가 증가하였는데, 특히 토양 pH 4.4 전후에서 급격한 증가를 보였다. 한편, 잣나무 묘목의 개체건중량과 토양의 pH 및 Al농도와의 사이에 각각 높은 상관(r=0.90, p<0.05 ; r=-0.94, p<0.01)이 인정되었다. 이 결과는 토양의 pH 및 Al농도는 산림수종의 생장에 미치는 산성우의 영향평가에 있어 중요한 지표가 될 것으로 사료된다. Three-year-old Pinus koraiensis seedlings, transplanted in brown forest soils originating from granite were treated with simulated acid rain of pH concentrations 5.6(control), 4.0, 3.0, 2.5 and 2.0 for 210 days from April 21 to November 17, 1999. Visible injury of the seedlings were observed at the pH 2.0 and pH 2.5 treatments. The total dry weight of the seedlings decreased at pH 2.0 treatment compared with that of the control, and T/R ratio increased at pH 2.0 treatment compared with others. The elements in each part of the seedlings, concentrations of Ca, P and content of chlorophyll in needles increased at the pH 2.0 treatment compared with the control. The concentration of N in the needles of the seedlings increased as the soil pH decreased. As the treated pH was lowered, soil pH has decreased, and concentrations of Ca, Mg, Al, and Mn increased, especially at pH 4.4. In addition, there was a strong correlation(r=0.90, p<0.05 ; r=-0.94, p<0.01) between the dry weight of the seedlings and the pH and Al concentration of the soils. Therefore, the pH and Al concentration in the soil may be useful indicator for assessing the effect of acid rain on the growth of woody plants.

제주도(濟州道) 삼나무(Cryptomeria japonica) 조림지(造林地)의 영양환경(營養環境)에 관(關)한 연구(硏究) -I. 원야조림(原野造林)에 의한 토양성질(土壤性質)의 변화(變化)

진현오,Jin, Hyun-O 한국토양비료학회 1991 한국토양비료학회지 Vol.24 No.3

제주도(濟州道) 삼나무 조림지(造林地)를 대상(對象)으로 원야조림(原野造林)에 의한 토양(土壤)의 화학적(化學的) 성질(性質)의 변화(變化)를 비교(比較) 검토(檢討)한 결과(結果)를 요약(要約)하면 다음과 같다. 1. 표토(表土)(0~10cm)의 전질소(全窒素), 전탄소(全炭素) 치환성(置換性) Ca, Mg, K 및 염기포화도(鹽基飽和度)에서 조림후(造林後) 임분(林分)의 폐쇄시기(閉鎖時期)인 10년(年)까지는 감소(減少)하는 경향(傾向)을 보였다. 그 후(後) 임분(林分)의 폐쇄(閉鎖)가 완료(完了)된 10년이후(年以後)부터는 증가(增加)하는 경향(傾向)을 보였으며 특(特)히 치환성(置換性) Ca, Mg은 많은 임분(林分)에서 급격(急激)한 증가(增加)를 보였다. 2. 토양(土壤)의 화학적(化學的) 성질(性質)의 수직분포(垂直分布)에 있어서 전탄소(全炭素), 전질소(全窒素), 치환산도(置換酸度), 치환성(置換性) Ca, Mg, K는 토심(土深)이 깊어질수록 감소(減少)하였으며 이 중 치환성(置換性) Ca, Mg은 10~20층(層) 이하(以下)에서는 거의 일정(一定)한 값을 보였다. 3. 폐쇄전(閉鎖前)과 폐쇄후(閉鎖後)의 토양양분량(土壤養分量)(ha, 50cm)은 전질소(全窒素), 전탄소(全炭素)에서는 거의 같았으나, 치환성(置換性) Ca, Mg, K는 폐쇄후(閉鎖後)에서 각각(各各) 1.8배(倍), 1.6배(倍), 1.5배(倍) 정도(程度) 많은 값을 나타냈다. 4. 전층(全層)의 양분량(養分量)에 대한 표층토(表層土)의 양분량(養分量)의 비율(比率)은 폐쇄전(閉鎖前)과 폐쇄후(閉鎖後)에서 각각(各各) 치환성(置換性) Ca이 30%와 50%, 치환성(置換性) Mg이 30%와 40%로 폐쇄후(閉鎖後)에서 많은 값을 나타내었으나, 전탄소(全炭素), 전질소(全窒素) 및 치환성(置換性) K에서는 거의 같은 값을 보였다. This study was carried out to clarify the effects of grassland afforestation on some chemical properties of the Japanese ceder(Cryptomeria japonica) forest soil in Cheju Island. The following results were obtained in this study ; 1. T-C, T-N, exch. cations and base saturation in the surface soil(0~10cm) decreased sharply from planting to crown closure. However, after crown closure, exch. Ca and Mg increased considerably. On the other hand, there were no definit changes below surface soil. 2. In vertical distribution of chemical properties, T-C, T-N, exchangeable acidity and exch. cations decreased with soil depth. Especially, exch. Ca and Mg of surface soil in closed stand show a higher value than that in open stand, but there were no variation below surface soil. 3. In closed stand, the amounts of exch. Ca, Mg and K were 1.8 times, 1.6 times and 1.5 times greater than those in open stand. There was no significant difference between open and closed stand in T-C and T-N. 4. The ratios of the amounts of nutrients in surface soil to those in mineral horizons(ha, 50cm) between the open and closed stand showed 30% and 50% for exch. Ca, 30% and 40% for exch. Mg, 38% and 38% for exch. K, respectively.

삼나무의 엽형분류 및 생장특성에 관한 연구 - 제주도를 중심으로 -

진현오,전상근 ( Hyun O Jin,Sang Keun Chon ) 한국산림과학회 1987 한국산림과학회지 Vol.76 No.4

Needle type and growth characteristics of Cryptomeria japonica planted in Cheju, Korea, were investigated and compared with those of the same species distributed in Japan. Needle types were classified into nine lines, and the stands were composed of more than six lines. The trees of the same needle type as Ura-Sugi (Cryptomeria japonica) in Japan showed the best growth in height.

경기지역 인삼재배지의 토양 및 엽중 적정양분함량 검정

진현오,권혁범,양덕춘 한국자원식물학회 2011 한국자원식물학회지 Vol.24 No.5

Ginseng growth is largely affected by characteristics of soil in Ginseng field. In this study, we determined the critical ranges of physico-chemical properties of soil for optimization of ginseng growth by analyzing the soils from Anseong and Pocheon regions in Gyeonggi province. Fresh weight of ginseng was 2 to 5 fold higher in good growth field compared to poor growth field within Anseong region. In the case of Pocheon region, 1.5 to 2 fold differences of fresh weight of ginseng was observed between good and poor growth field. These results indicate the difference of ginseng growth even in the same region. Based on these results, critical ranges of physico-chemical properties of soils were determined by comparing the good and poor growth field of each regions, which are follows; more than 50% of soil porosity, 2.0~2.8 g/kg of total nitrogen, 500~900 mg/kg for Av. P2O5, 2.3~3.5 cmolc kg-1 for Exch. Ca in Anseong; less than 13% of liquid phase, 400~650 mg/kg for Av. P2O5, 4.0~4.7 cmolc kg-1 for Exch. Ca, less than 0.8 and 0.5 cmolc kg-1 for Exch. Mg and K, respectively, in Pocheon. Interestingly, we found that ginseng growth was affected by exchangeable base ratio (Ca:Mg:K) especially in Anseong region, which were 6:2:1 in good growth field while 4:2:1 in poor growth field. Critical ranges for nutrient contents of ginseng leaves were also characterized, which are less than 0.2% and 0.22% of each P and Mg, respectively, in Anseong, while less than 1.8% and 0.18% of each N and P, respecively, and 1.5~3.0% of K in Pocheon. In addition, we determined critical ranges for inorganic nutrient contents in the current study. 본 연구는 경기도 안성, 포천지역 인삼재배지의 이화학적 성질 및 인삼의 엽 분석을 실시하여 인삼의 생육에 적합한 토양 및 엽중 적정 양분 농도를 설정하고자 수행하였다. 인삼 생근중은 우량포지가 불량포지에 비하여 안성지역이 2-5배, 포천지역이 1.5-2배 차이를 보여 동일 지역내에서도 큰 생육차이를 보이고 있었다. 인삼 생육에 관여하는 토양의 이화학적 성질의 적정 범위는 안성지역에서 공극률(>50%), 전질소(2.0-2.8 g/kg), 유효인산(500-900 mg/kg), 치환성 Ca(2.3-3.5 cmolc kg-1)이었으며, 포천지역에서는 액상(13%<), 유효인산(400-650 mg/kg), 치환성 Ca(4.0-4.7 cmolc kg-1), 치환성 Mg(<0.8 cmolc kg-1), 치환성 K(<0.5 cmolc kg-1)로 나타났다. 특히, 안성지역에 있어서는 치환성 염기 성분비(Exch Ca:Mg:K)도 인삼생육에 관여하고 있었는데 우량포지에서 6:2:1, 불량포지에서 4:2:1의 값을 보였다. 엽중 무기양분 함량 적정 범위는 안성지역에서 P(<0.25%), Mg(0.22%<), 포천지역에서 N(1.8%<), P(0.18%<), K(1.5-3.0%)의 값을 보였으며 그 이외의 일부 엽중 무기양분 성분비에서도 적정 범위가 설정되었다.

토양 야생동물 분야 ( 농학 1호관 1111호 ) : 요소시용이 삼림토양 및 토양수의 양분동태에 미치는 영향

진현오,김홍률 한국임학회 1999 한국임학회 학술발표논문집 Vol.1999 No.-

수종갱신에 따른 토양의 이,화학성 변화분석

진현오,정동준,김홍률 한국임학회 2005 한국임학회 학술발표논문집 Vol.2005 No.-

강원도 춘천지역 낙엽활엽수림에서의 수분이동에 따른 양분동태

진현오,손요환,이명종,박인협,김동엽 한국생태학회 2003 Journal of Ecology and Environment Vol.26 No.1

We examined water flux, concentrations and contents in nutrients in precipitation, throughfall, stemflow and soil solution in natural deciduous hardwood forest(Quercus variabilis and Q. mongolica) in Chunchon, Kangwon Province. The volume of throughfall was 2∼3% higher in Q. variabilis than in Q. monglica while volume of stemflow, Ao, A and B soil solution was 10∼15% higher in Q. variabilis compared to Q. monglica. Concentrations of K/sup +/ increased in throughfall H while concentrations of Ca/sup 2+/, Mg/sup 2+/ and NO₃/sup -/ increased in Ao soil solution. The former might be related to the canopy leaching and the latter related to leaching and nitrification in Ao horizon. Nutrient concentrations in throughfall, Ao, A and B soil solution decreased with increasing amount of water and especially the decreases in concentrations of K/sup +/, Mg/sup 2+/ and Cl/sup -/ were significant. Nutrient concentrations of Ca/sup 2+/ in Ao soil solution was 1.5 times higher in Q. variabilis than in Q. mongolica. However, there were no significant nutrient concentration differences in throughfall, stemflow and A and B soil solution between the two forest types. Stemflow was less than 10% of total water volume (throughfall + stemflow) to the forest floor, and contribution of stemflow to nutrient cycling seemed to be low in the study forest. 본 연구에서는 강원도 춘천지역 낙엽활엽수림(굴참나무, 신갈나무)에서의 강우의 이동에 따른 수량, 용존원소 농도 및 물질량 등을 조사하였다. 임외우량에 대한 각 강우량의 비율은 굴참나무임분이 신갈나무임분에 비하여 수관통과우에서 2∼3%, 그 외의 강우에서 10∼15%의 증가량을 나타내고 있었다. 임외우에 비하여 수관통과우에서는 K/sup +/농도가, Ao층통과우에서는 Ca/sup 2+/, Mg/sup 2+/, NO₃/sup -/농도가 현저하게 증가하였는데, 이는 전자의 원소농도에서는 수관으로부터의 용탈, 후자의 원소농도에서는 Ao층으로부터의 용탈 및 질산화 작용에 기인한 것이라 판단된다. 수관통과우, Ao층통과우 및 A, B층토양수에 있어서 원소농도는 수량이 증가함에 따라 감소하는 경향을 보였는데, 특히 K/sup +/, Mg/sup 2+/, Cl/sup -/농도에서 현저하였다. Ao층통과우의 Ca/sup 2+/에서 굴참나무임분이 신갈나무임분에 비하여 1.5배 정도 높은 값을 나타낸 것 이외에는 다른 강우의 물질량에 있어서는 임분 간 뚜렷한 차이는 없었다. 연간 수간류 물질량은 임상으로 도달하는 강우(수관통과우+수간류)물질량의 10% 미만이었는데, 양적인 면으로 보아 물질순환 과정에 있어서 수간류의 비중은 작다고 판단된다.