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.

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.

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.

濟州道 삼나무(Cryptomeria japonica) 造林地의 營養環境에 관한 硏究

陳鉉五(Hyun-O Jin) 한국토양비료학회 1992 한국토양비료학회지 Vol.25 No.3

토양산성화가 소나무, 상수리나무 묘목의 생장 및 영양상태에 미치는 영향

진현오 ( Hyun O Jin ),방선희 ( Sun Hee Bang ),이충화 ( Choong Hwa Lee ),김세영 ( Se Young Kim ) 한국산림과학회 2008 한국산림과학회지 Vol.97 No.3

인삼재배지의 영양환경이 인삼의 생육에 미치는 영향

진현오(Hyun-O Jin),김웅진(Ung-Jin Kim),양덕춘(Deok-Chun Yang) 고려인삼학회 2009 Journal of Ginseng Research Vol.33 No.3

이 연구는 경기도 안성지역에서 우량 및 불량 인삼재배지를 대상으로 토양 및 잎을 분석하여 인삼의 생육에 적합한 양분함량의 수준을 구명하고자 수행하였다. 인삼생육과 밀접한 관계를 보이는 물리적 성질은 공극률이었으며, 우량포지에서 50%이상의 값을 보였다. 토양의 화학적 성질의 적정범위는 전질소 2.0-2.8 g/㎏, 유효인산 500-900 ㎎/㎏, 치환성 Ca 2.3-3.5 c㏖?/㎏ 이었다. 또한, 치환성 염기 성분비 (Exch. Ca:Mg:K)도 인삼생육에 영향을 미치는 것으로 나타났는데 그 값은 우량포지에서 6:2:1, 불량포지에서 4:2:1로 나타났다. 잎의 무기양분함량 적정범위는 P 0.25% 이상, Mg 0.22% 이하였으며 그 외의 원소에 있어서는 뚜렷한 값을 나타내지 않았다. 우량포지에서 엽 중 N/P, N/Mg, K/Mg, Ca/P의 함량비는 각각 10 이상, 10-13, 14 이하, 1 이상의 값을 나타내었다. This study aims to establish the directions for the optimal nutrient contents determined by soil and leaf analyses. The study is to be used as a source for basic information in investigating the effects of nutritional environment on ginseng growth at the fields of Ansung region in Gyeonggi province. The physical property of soil porosity is closely related to ginseng growth, with more than 50% of good growth in the field. The optimal range of chemical properties in soil was analyzed as 0.20-0.28% T-N, 500-900 ㎎/㎏ Av.P₂O?, and 2.3-3.5 c㏖?/㎏ Exch.Ca. The optimal range of inorganic nutrient contents in leaves was also analyzed. P value was less than 0.25%, and Mg was more than 0.22%. Other elements were not found clearly. The ratios of N/P, N/Mg, K/Mg, and Ca/P of leaves with good growth in the field showed 10<, 10-13, <14, 1<, respectively. In addition, the Ca:Mg:K ratio of the Exch.cation (c㏖?/㎏) may be useful as an indicator in the assessment of plant growth in ginseng.

濟州道 삼나무(Cryptomeria japonica) 造林地의 營養環境에 關한 硏究

진현오(Hyun-O Jin) 한국토양비료학회 1993 한국토양비료학회지 Vol.26 No.4

尿素를 施用한 森林土壤과 土壤水中 養分含量의 季節的 變化

陳鉉五(Hyun-O Jin),朱榮特(Yeong-Teuk Joo),孫堯丸(Yo-Hwan Son),吳鐘敏(Jong-Min Oh),鄭德泳(Doug-Young Chung) 한국토양비료학회 1999 한국토양비료학회지 Vol.32 No.2

상이한 임분의 토층분화에 따른 수분분포와 이동특성

진현오(Hyun O Jin),정덕영(Doug Young Chung),손요환(Yow Han Son),주영특(Yeong Teuk Joo),오종민(Jong Min Oh) 한국산림과학회 2000 한국산림과학회지 Vol.89 No.1

We investigated the patterns of soil horizon evolution and its water distribution on three different forest stands covered with Larix leptolepis, Pinus koraiensis, and Qercus mongolica on the Experimental Forest of Kyunghee University, located in Kwangju, Kyunggi-Do. Compared to the properties of depths of O and A horizons evolved on the Pinus koraiensis stand, the depths of O and A horizons on the forest stands of Larix leptolepis and Qercus mongolica were shallower, indicating that the soil horizon were deeply influenced by geographical characteristics, its erosive and sedimentary distinction, vegetation cover and its population density. And the bulk densities of the sites selected were lower in the high slope gradient than that in the lower slope gradient at the same depth of soil profile. Therefore, the changes of the soil bulk densities were closely related to the soil organic matter and the vertical transport of soil particle throughout soil depths. On the other hand, the bulk density and organic matter content in soil can influence the water transport phenomena, resulting in decrease of the hydraulic conductivity as the increase in the bulk density, while the organic matter can not affect the hydraulic conductivity on the soil surface layer. For a rainfall infiltration characteristics from a lysimeter experiment established on the stand of Larix leptolepis, the bulk density and slope gradient strongly influenced the vertical transport of water, as well as the lateral movement of rainfall. Conclusively, the characteristics of water movement and distribution in the forest stand can be determined not by the geographical factor such as slope gradient but also by the bulk density and organic matter content remained in soils.

지역별 산림토양의 K ( Potassium ) 공급 특성

진현오(Hyun O Jin),김준환(Jun Hwan Kim) 한국산림과학회 2001 한국산림과학회지 Vol.90 No.1

Generally potassium in the soil can be remained as water soluble, exchangeable, and available types, respectively. Theses types of potassiums are also known to keep their kinetic relationships to each other. The Purpose on this research was to investigate types and relationships of potassium in the soil, and the characteristics of potassium supply in different forest soils. The results could be summarized as follows; 1. The amounts of available potassium in A and B horizon soils by continuous leaching with 0.01N-HCl were as follows : for A Horizon soils, pohang(Gray brown forest soils), Changsung (Brown forest soisl), and Youngwol(Dark red forest soils) were ranged from 0.2me/l00g to 0.8me/100g, Taean(Red and Yellow forest soils) was 0.1-0.6me/100g, Kapyung(Brown forest soils) was 0.2-0.4me/100g. For the B layer, Youngwol was 0.1-0.5me/ 100g, Pohang, Taean, Kapyung were 0.1-0.4me/100g, Changsung was 0.1-0.3me/100g, respectivly. 2. Of ten times-pulse leaching with 0.01N-HCI for A layer soil, more 80% of total available potassium leaching were recovered by the second pulse as leachate for Pohang, Changsung, Youngwol, while similar amounts of potassium in the leachate were obtained with the third pulse leaching for Kapyung, Taean, respectively, On the other hand, the 80 % release of available potassium from the B layer soil was obtained by the second pulse leaching for all areas investigated. 3. For the relationships between soluble potassium and exchangeable potassium, the exchangeable potassium was increased while the soluble potassium was not changed significantly in B layer. And both soluble potassium and exchangeable potassium in A layer were similar. For the relationship between exchangeable potassium and available potassium in both A and B layers, the amounts of available potassium increased by 1.2 to 1.5 times as the exchangeable potassium increased. 4. For distribution of all types of potassium throughout locations investigated, the types of potassium were in the decreasing orders of available, exchangeable, and soluble. 5. The simplified method for an analysis of all types of potassium by sequential leaching with 0.01N-HCI should be developed not only with respect to time-saving and efficiency but also verification of the relationship between available potassium and tree growth.