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NTIS 바로가기한국산림과학회지 = Journal of korean society of forest science, v.107 no.2, 2018년, pp.193 - 204
이정호 (강원대학교 산림경영학과) , 이대성 (강원대학교 산림경영학과) , 서영완 (강원대학교 산림과학연구소) , 최정기 (강원대학교 산림경영학과)
This study was carried out to select the optimal method of competition index computation according to the competitor selection methods and distant-dependent competition index models, and to analyze the characteristics of competition indices in terms of thinning intensity and tree density targeting P...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
입목간의 경쟁은 언제 일어나는가? | 입목간의 경쟁은 햇빛, 수분, 영양소 등 자원에 대한 이용가능성이 최적 생장을 위한 요구조건에 미치지 못할 때 개체목들 간의 상호작용으로 나타나며, 이는 상대적 크기와 차지하는 생육공간의 점유능력으로 표현될 수 있다(Brand and Magnussen, 1988; Linkevičius et al., 2014). | |
경쟁지수는 어떤 역할을 하는가? | 이러한 경쟁은 다양한 이론적 방법에 따라 수치화하여 경쟁지수라 일컫는데 이는 임분에서 특정 상태의 입목생장을 파악함으로써 개체목 단위 예측의 핵심을 구성하기 때문에 중요한 것으로 알려졌다(Pretzsch, 2009). 즉, 경쟁지수는 개체목의 생장을 예측하는 모델에 독립변수로써 이용되는데 모델에 있어 경쟁지수의 역할은 주변 경쟁목들에 대해 중심목의 경쟁상태가 고려되어 향상된 설명력을 제공하는 것이다(Shin et al., 2002). | |
경쟁지수를 개체목간 거리에 따라 분류하여 설명하시오. | 경쟁지수를 파악하는 방법은 크게 각 개체목간 거리를 고려하는지 여부에 따라 거리종속 경쟁지수와 거리독립 경쟁지수로 크게 분류된다(Biging and Dobbertin, 1992; 1995; Davis and Johnson, 1987; Holmes and Reed, 1991; Tomé and Burkhart, 1989). 그 중 개체목간의 경쟁 상태는 거리독립 경쟁지수보다 거리종속 경쟁지수가 더 잘 추정하는 것으로 알려져 있으며, 이러한 경향은 단순 인공림에서 더욱 뚜렷한 것으로 보고되었다(Moore et al, 1973; Martin and Ek, 1984). 이에 따라 개체목의 생장예측에 사용하기 위하여 많은 거리종속 경쟁지수가 제안되어 왔다(Bella, 1971; Heygi, 1974; Daniels, 1976; Martin and EK, 1984; Tomé and Burkhart, 1989; MacDonald et al., 1990; Biging and Dobbertin, 1992; Brunner and Nigh, 2000; Radtke et al. |
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