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| ▒ Home | > | | 연구정보 (Information) | > | 국내연구정보 (Domestic information) |
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| 잣나무 치수의 침입 정착 Invasion of Korean Pine Seedlings |
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| 글쓴이 : 관리자
날짜 : 08-03-03 23:03
조회 : 8752
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광릉 천연침엽수 성숙림에서 주변 인공림으로부터 잣나무 치수의 침입 정착 Invasion of Korean Pine Seedlings Originated from Neighbour Plantations into the Natural Mature Deciduous Broad-leaved Forest in Gwangneung, Korea <한국임학회지 96(1):107~114 Jour. Korean For. Soc. 96(1):107~114 2007> Corresponding author limjh@foa.go.kr
조사지내에는 잣나무 성목이 분포하고 있지 않으나, 천연갱신된 잣나무 치수의 밀도는 ha당 총 345본으로 전체 치수의 56%가 2개 이상씩 모여서 분포하고 있었다. 2003년 1월 IKNOS 위성영상을 이용한 조사지와 주변 잣나무 성목 및 조림지까지의 거리를 조사한 결과, 잣나무 성목과는 최소 200m, 잣나무 조림지와는 최소 270m 이상 떨어진 것으로 나타났다. 천연갱신된 잣나무 치수의 평균 묘고와 근원경은 각각 34cm, 7mm 이었으며, 수령 5년 이하의 치수가 207본(60%)이었다. 잣나무 치수와 토양 수분 및 엽면적지수(LAl)와의 관계를 분석한 결과 토양수분은 16~20%, 엽면적지수는 3.1~3.5 구간에서 잣나무 치수의 분포가 가장 많았다. 광릉 천연활엽수림내 잣나무의 동태 및 종자 분산 경향을 파악하기 위해서는 앞으로 잣나무 치수의 생장과 고사율에 대한 장기적인 모니터링과 함께 방사성 동위원소와 분자유전학적 방법 등을 활용한 추가적인 연구도 필요할 것으로 판단된다.
Establishments of the seedlings inside the natural forest from adjacent artificial forests would be an important factor in forest stand dynamics. This study was conducted to see the invasion of Korean pine seedlings, which are not native in this region, into the natural deciduous broad-leaved forest in Gwangneung, Korea. There is no mother tree at the 1 ha study site while the number of naturally regenerated Korean white pine seedlings was 345 trees and 56% of them were clumped with more than two seedlings at each point. Applying the image segmentation method to IKONOS satellite image of January, 2003, the distance from the center of 1 ha study site to the nearest mother tree and plantation of Korean pine were 200 m and 270 m, respectively. The average height and root-collar diameter of the seedlings were 34 cm and 7 mm, respectively and the age of 207 seedlings (60%) were below 5 years old. Most abundant range of soil moisture gradient and LAI (leaf area index) were from 16 to 20% and those of LAI were from 3.1 to 3.5. To understand the dynamics and seed dispersal pattern of Korean white pine in the Gwangneung natural deciduous broad-leaved forests, additional studies including application of stable isotope analysis and molecular genetic techniques were recommended.
Key words: Pinus koraiensis, seedling distribution, forest stand dynamics, deciduous-leaved forest, natural regeneration, soil moisture, LAI, IKNOS satellite image
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