한국환경생태학회지 (Korean Journal of Environment and Ecology)

  • 제17권2호
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  • Pages.144-152
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  • 2003
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  • 1229-3857(pISSN)
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  • 2288-131X(eISSN)
한국환경생태학회 (Korean Society of Environment and Ecology)
권호 표지

독일 너도밤나무(Fagus sylvatica L.) 숲 틈새에서의 갱신생태학적 연구

Ecological Study of Regenerations in Experimental Canopy Gaps of a Fagus Sylvatica Forest in Germany

  • 변무섭 (전북대학교 농업과학기술연구소)
  • 발행 : 2003.08.01
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초록

본 연구는 독일 졸링(selling)지역의 산성화된 너도밤나무 임분에 군상벌채(group cutting. 지름 약 30m)를 통한 임관틈새를 조성하여 고회석분말 시비를 수행하고, 이러한 미세 입지환경적 요소의 변화와 너도밤나무 갱신치수의 발달과 성장 그리고 지피식생 및 근균의 동태를 파악하고, 이를 토대로 합리적인 천연갱신 방법과 건실한 산림생태계관리지침의 기초자료를 제공할 목적으로 수행되었다 본 연구의 주요 결과는 다음과 같다. 첫째 산성화가 심화된 너도밤나무(Fagus sylvatica) 임분에서의 고회석분말시비는 토양의 화학성을 크게 개선시켰으며 지피식생의 현저한 발달을 가져왔다. 둘째, 산성화된 너도밤나무 임분에서의 갱신치수의 발달 및 성장은 매우 결핍하였고 특히 측근의 발달이 억제되었다. 셋째, 엽성분분석에서 시비구는 대조구에 비해 칼슘(Ca), 마그네슘(Mg)의 함량이 높게 나타난 반면에 망간(Mn)함량은 상대적으로 낮게 나타났으며, 칼륨(K)과 칼슘(Ca), 마그네슘(Mg)사이에 상호 길항작용이 확인되었다. 넷째, 너도밤나무 치수에서의 상대근균 빈도(RM)는 임관틈새 중앙부에 비해 남가장자리에서 월등히 높게 나타났고, 시비로 인해 Laccaria amethystina의 확장세가 뚜렷하게 나타났다. 이러한 결과에서 너도밤나무의 천연갱신 작업법으로 치수의 밀도 및 발달을 위해 산벌갱신작업법이 더 효과적일 것으로 판단되며, 대기오염으로 인하여 산성화가 심화되는 숲은 석회시비를 통해 건실한 산림생태계의 복원이 필요하다고 판단된다.

The purpose of this study was to investigate the effects of lime fertilization and light intensity on beech regeneration strategy in a mature beech forest(ca. 150 years old) gaps, which was located in the soiling areas Germany, where the soil is an acid brown earth. For the experiment canopy gaps of 30m diameter were cut, and one canopy gap remained as untreated while the other was limed(3t dolomite h $a^{-1}$). Soil chemistry, soil water potential, light intensity(PAR), ground vegetation, beech seedlings and mycorrhiza were investigated along transect from the stands into gaps to the north. The results of this study are followings: 1) In the limed gap, soil chemistry was greatly improved and a vigorous herb layer developed as compared to the unlimed gap. 2) Development and growth of the beech seedlings in the unlimed gap were generally deficient. Specially, developments of lateral roots were very lack. 3) Through the lime fertilization, the minerals contents of beech leaves such as calcium(Ca) and magnesium(Mg) were increased, while manganese(Mn) was decreased. There was antagonism between potassium(K) and calcium(Ca) or magnesium(Mg). 4) The relative mycorrhiza frequency(RM) in beech seedlings of the southern edge was very higher than that of the middle part, and through the lime fertilization extension of the species Laccaria amethystina appeared clearly. The results of this study showed that lime fertilize in forest, where the soil is acid, will be necessary..

키워드

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