아황산가스 및 ABA 전처리가 침엽수 유묘의 (幼苗) 생장피해와 생리적 감수성에 미치는 영향

이임균(Im Kyun Lee),김영채(Young Chai Kim) 한국산림과학회 1994 한국산림과학회지 Vol.83 No.3

This study was conducted to find out the effect of SO₂ gas on growth of tree species and the effect of pretreatment of ABA to Pinus koraiensis. Abies faolophylhz and Taeus cuspidata on the susceptibility for SO₂ gas damage. The survey was carried out on the water contents of leaf and shoot, and the acidities of bark and leaf, and the chlorophyll and water soluble sulfur contents, and the changes of transpiration rates on selected seedlings exposed to SO₂ gas at seven levels : 0ppm, 0.5ppm, 1ppm, 2ppm, 4ppm, 26.4ppm ABA, 56.8ppm ABA. The results obtained from this research are as follows : 1. The water contents of leaf and shoot of the three tree species decreased with increasing concentrations of SO₂ gas and the relative susceptibility of Abies holophylla was larger than those of Taxus cuspidata and Pinus koraiensis because moisture diminution rates were higher in leaves and shoots of Abies holophylla than those of other species. 2. The acidities of bark and leaf of the three tree species increased with increasing concentrations of SO₂ gas. The relative susceptibility of Pinus koraiensis in bark acidity was larger than those of Abies holopfaylla and Toxus cuspidata. Abies holophylla was more susceptive than Pinus koraiensis and Taxus cuspidata. 3. Water soluble sulfur contents of the three tree species increased with increasing concentration of SO₂ gas. The relative susceptibility of Taxus cuspidata in water soluble sulfur contents was lager than those of Pinus koraiensis and Abies holophylla. 4. Leaf chlorophyll contents of the three tree species decreased with increasing concentrations of SO₂ gas. The order of the relative susceptibility in leaf chlorophyll contents was Taxus cuspidata, Abies holophylla and Pinus koraiensis. 5. Correlation coefficients among the measurement were highly significant for SO₂ treatment in all three tree species. 6. The transpiration rates of Abies holophylla and Taxus cuspidata did not change until up to 220 minutes after initiation of SO₂ gas fumigation, and changed a little during the time between 220 minutes and 270 minutes. On the other hand, Pinus koraiensis continued to change in transpiration rates little by little from the start of SO₂ gas treatment up to 270 minutes, meaning that Pinus koraiensis is less sensitive to ABA. 7. When 2ppm of SO₂ was treated. ABA pretreatment effect was detected on the six measurement parameters. A73A affected the resistance of plants by inducing stomata closure. 8. The order of relative susceptibility of the three tree species to SO₂ gas fumigation was Abies holophylla, Taxus cuspidata and Pinus koraiensis. Pinus koraiensis was more resistant to SO₂ gas than Abies holophylla and Taxus cuspidata.

한라산 장기생태연구지의 낙엽낙지와 낙엽분해

이임균,김진 한국임학회 2011 산림과학 공동학술대회 논문집 Vol.2011 No.-

질소와 인 시비(施肥)가 경기도 양평지역 리기다소나무와 낙엽송 조림지(造林地) 토양 내 질소무기화에 미치는 영향

이임균 ( Im Kyun Lee ),손요환 ( Yo Whan Son ) 한국산림과학회 2006 한국산림과학회지 Vol.95 No.1

질소와 인 시비가 리기다소나무와 낙엽송 침엽 및 소지에서의 부위별 양분의 계절적 변화 및 재분배에 미치는 영향

이임균,손요환 한국생태학회 2004 Journal of Ecology and Environment Vol.27 No.4

Effects of nitrogen and phosphorus fertilization on seasonal changes of nutrient content in tree components, and retranslocation N and P in foliage and twig were determined in adjacent 41-year-old plantations of Pinus rigida Miller and Larix kaempferi Gordon on a similar soil in Yangpyeong, Gyeonggi Province. In general, foliage N and P concentrations of L. kaempferi were significantly higher than current and 1-year-old foliages of P. rigida. N and P concentrations were higher in foliage than in twigs for both tree species. However, there were no significant differences in foliage and twig N and P concentrations with ages. Significant seasonal differences in foliage and twig N and P concentrations were observed for both tree species because of nutrient retranslocation. Foliage nutrient concentrations were highest in the mid-growing season and lowest in autumn, whereas twig nutrient concentrations have gradually increased since July. These seasonal trends indicated nutrient retranslocation from foliage into twigs before foliage senescence. However, there were no significant changes in foliage and twig nutrient retranslocation, and no consistent patterns in foliage and twig nutrient retranslocation following N and P fertilizer additions. No significant changes in nutrient retranslocation between different foliage and twig ages were observed following fertilization. 본 연구는 경기도 양평지역 내 서로 인접하여 있고 동일한 입지환경 위에 생육하고 있는 41년생 리기 다소나무와 낙엽송 조림지를 대상으로 질소와 인 시비처리가 리기다소나무와 낙엽송 침엽 및 소지에서의 부위별 양분의 계절적 변화 및 양분 재분배에 미치는 영향을 구명하기 위하여 수행되었다. 엽내 질소와 인 농도 는 낙엽송이 리기다소나무 당년생과 1년생 엽보다 모두 높은 것으로 나타났다. 또한 두 수종 모두 질소와 인 농도는 소지보다 침엽에서 더 높았던 것으로 나타났으나 엽령 증가에 따른 침엽과 소지에서의 질소와 인 농도의 차이는 나타나지 않았다. 엽과 소지에서의 질소와 인 농도의 계절적인 차이는 두 수종 모두 통계적으로 유의성이 인정되었다. 두 수종의 침엽내 양분의 농도는 임목 생장기에 농도가 가장 높았고 가을철엔 가장 낮아진 반면, 소지내 양분농도는 7월 이후 점차적으로 증가되는 경향을 나타내었다. 이러한 계절적 경향은 두 수종 모두 가을철 낙엽기에 침엽으로부터 소지로 양분이 이동되어 축적되는 현상을 나타내는 양분의 재분배 현상에 기인하는 것으로 판단된다. 그러나 수종별로 양분 이용효율을 나타낼 수 있는 양분 재분배율은 본 연구 결과만으로 보면 상록성 침엽수인 리기다소나무와 낙엽성 침엽수인 낙엽송 간에 차이가 없어 잎의 행태와 양분이용효율간의 관계를 단정하기는 어려웠다. 또한 시비처리 후 침엽과 소지의 양분 재분배율 변화도 일정한 경향을 나타내지 않아 임지의 비옥도와 양분 재분배율의 관계가 명확하지 않았다.

백두대간 내 폐광복구지의 식생기반에 따른 피복률 차이

이임균,김영걸,김진길 한국임학회 2009 한국임학회 정기학술발표논문집 Vol.2009 No.-

계방산 장기생태조사지의 낙엽 생산량 및 낙엽 분해에 따른 양분 동태

이임균,임종환,김춘식,김영걸 한국생태학회 2006 Journal of Ecology and Environment Vol.29 No.6

질소와 인 시비가 경기도 양평지역 리기다소나무와 낙엽송 조림지의 지상부 생체량과 양분농도에 미치는 영향

이임균(Im Kyun Lee),손요환(Yowhan Son),오정수(Jeong Soo Oh) 한국산림바이오에너지학회 2004 산림바이오에너지 Vol.23 No.1

본 연구는 질소 및 인 시비가 지상부 생체량과 양분의 분포에 미치는 영향을 조사하기 위하여 경기도 양평지역의 유사한 토양 위에 조성되어 있는 41년생 리기다소나무와 낙엽송 조림지를 대상으로 실시되었다. 시비는 대조구(control), 저농도 시비구 [200N kg/ha+25P kg/ha(LNP)], 고농도 시비구 [400N kg/ha+50P kg/ha(HNP)] 등 세 수준으로 처리하였으며, 본 연구로부터 얻어진 결과는 다음과 같다.<br/> 리기다소나무와 낙엽송 임분의 총 지상부 생체량은 대조구가 149, 145ton/ha, LNP 처리구가 166, 149ton/ha, HNP 처리구가 152, 170ton/ha이었으며, 수종간에는 유의적인 차이가 나타나지 않았다. 리기다소나무와 낙엽송 임분 모두 지상부 각 부위별 생체량은 수간목부>가지>수피>엽의 순으로 분포되어 있었다. 하층식생의 생체량은 리기다소나무림이 1,111kg/ha, 그리고 낙엽송림이 907kg/ha이었으며, 이는 전체 지상부 생체량의 0.6~0.7%에 해당되는 것이었다. 일반적으로 수체내 모든 양분들의(N, P, K, Ca, Mg) 농도는 리기다소나무에 비해 낙엽송이 높았는데, 그 이유는 낙엽성 침엽수가 상록성 침엽수에 비해 높은 양분 흡수력을 가지고 있기 때문으로 판단된다. 리기다소나무와 낙엽송 임분의 각 부위별 양분농도는 처리간에는 유의적인 차이가 나타나지 않은 반면, 수종간 각 부위간에는 고도의 유의적인 차이가 있는 것으로 나타났다. 또한 두 수종 모두 각 부위별 양분농도는 엽>가지>수피>수간목부의 순으로 감소되었다. 두 수종 모두 양분함량은 시비처리구가 대조구에 비해 많았으며, 리기다소나무는 LNP 처리구에서 그리고 낙엽송은 HNP 처리구에서 가장 많았던 것으로 나타났다. 지상부 식생에 대한 총 양분함량은(N+P+K+Ca+Mg) 리기다소나무가 703kg/ha 그리고 낙엽송이 869kg/ha였다. Effects of nitrogen and phosphorus fertilization on aboveground biomass and distribution of nutrient content in tree components were determined in adjacent 41-year-old plantations of Pinus rigida Miller and Larix kaempferi Gordon on a similar soil in Yangpyeong, Gyeonggi Province. Fertilizer was experimentally applied at the three levels [control(C), 200 N kg/ha+25 P kg/ha(LNP), and 400 N kg/ha+50 P kg/ha(HNP)] in June, 1996. The results obtained from this study were summarized as follows:<br/> Total aboveground biomass of P. rigida and L. kaempferi stands was 149, 145ton/ha for control, 166, 149ton/ha for LNP, and 152, 170ton/ha for HNP, respectively, and did not differ between the tree species. Aboveground biomass of P. rigida and L. kaempferi plantations were distributed as follows:stemwood>branch>stembark>foliage. Biomass of understory vegetation was 1,111kg/ha for P. rigida and 907kg/ha for L. kaempferi, and comprised 0.6~0.7% of the total aboveground biomass of the plantations. The concentrations of all nutrients(N, P, K, Ca, Mg) were generally higher in L. kaempferi than in P. rigida because of high nutrient uptake characteristics of Larix spp. Nutrient concentrations in tree components of P. rigida and L. kaempferi plantations were not significantly different among treatments, whereas they were significantly different between species and among tree components. The nutrient concentration in tree components of both tree species decreased in order of foliage>branch>stembark>stemwood. The contents of all nutrients were higher in the fertilized plots than in the control plots, generally the highest in LNP for P. rigida and in HNP for L. kaempferi. Total nutrient(N+P+K+Ca+Mg) contents of aboveground biomass were 703kg/ha for P. rigida and 869kg/ha for L. kaempferi, respectively.

질소와 인 시비가 경기도 양평지역 리기다소나무와 낙엽송 인공조림지 토양의 화학성에 미치는 영향

이임균,손요환,황재홍 한국임학회 2004 한국임학회 학술발표논문집 Vol.2004 No.-

경상북도 가지산 유역의 입지환경

이임균,천정화,양희문,이승우,권태성,임종환,김영걸 한국임학회 2009 한국임학회 정기학술발표논문집 Vol.2009 No.-

간벌이 삼나무와 편백 채종원의 토양 특성 및 종자 생산력에 미치는 영향

이임균,강영제,김찬수,김영걸 한국생태학회 2006 Journal of Ecology and Environment Vol.29 No.6

This study was conducted to investigate the effects of thinning on soil properties and seedproductivity in the 25-year-old Cryptomeria japonica and 30-year-old Chamaecyparis obtusa seed orchards in which thinning had been performed 4 years prior to the study. To this end, soil properties, cone and seed characteristics, seed production (kg/ha), and nutrient contents in seeds and cones were studied by 4 different thinning intensities (0, 20, 40, and 60%). Soil properties were not significantly different between the two orchards. Meanwhile, electric conductivity, total nitrogen, and K+concentration in the soil of C. obtusa seed orchard were significantly different among 4 different thinning intensities (p<0.05), while only Ca2+concentration in the C. japonica seed orchard was different (p<0.05). In the C. obtusa seed orchard, cone productivity increased with the increase of thinning intensities (p<0.05), whereas that in the C. japonica seed orchard did not show any significant differences. Both of the two seed orchards showed a tendency that seeds become bigger and heavier with the increase of thinning intensitproduction (kg/ha) in the C. obtusa seed orchard significantly increased with the increase of thinning intensities, while that of the C. japonica seed orchard decreased. Nutrient contents in seeds and cones did not show any significant differences among different thinning intensities in both of the two seed orchards.