Aboveground Biomass of 30 Years Old Chamaecyparis obtusa Plantation in Jinhae

진해지역 30년생 편백 인공림의 지상부 현존량

This study was carried out with Urich II method for estimating the aboveground biomass of 30 years old Chamaecypris obtuse plantation in Jinhae, Cyeongnam province, in order to solve problems of exhaustion of many time and manpower in field survey for estimating biomass of stands. The results were summarize as follows; Total aboveground biomass production of stands was 137.3ton/ha, which was 71.8% of stem, 15.4% of branch and 12.8% of leaf. Foliage biomass of stands was maximized on the 9.2~11.2m of total height. The ratio of biomass for each part of tree in Chamaecypris obtusa plantation was in order of, stem, branch and leaf in dominant and co-dominant tree, and was stem, leaf and branch in recessive tree. drying ratio by components were ranged 47.3~49.2% of stem, 48.8~52.9% of branch, 39.2~40.8 of leaf and 0.78%~0.89% of died branch. Specific gravity by sample tree was 0.49~0.53 range and there was not significantly different among sample tree.

경상남도 진해지역 30년생 편백 조림지를 대상으로 현존량을 추정하기 위하여 Urich II법에 의하여 수관급에 따른 부위별 현존량을 측정하여 생산구조를 해석하고 시료채취의 효율성을 높이기 위한 방법을 탐색하였다. 지상부 총 물질생산량은 137.3 ton/ha을 보유하고 있었으며, 이들 임목의 부위별 구성비는 줄기 71.8%, 가지 15.4%, 잎 12.8%로 나타났다. 임분에서 엽생산량은 수고 9.2∼11.2m에서 최대치를 보였으며, 현존량의 구성비는 우세목과 준우세목에서는 줄기>가지>잎, 열세목에서는 줄기>잎>가지 순으로 나타났다. 부위별 건조비는 줄기 47.3∼49.2%, 가지 48.8∼52.9%, 잎 39.2∼40.8%, 고사지 0.78%∼0.89%의 범위를 보였다. 표준목 전건비중(basic wood density)은 0.49∼0.53으로 나타났으나 수관급에 따른 표준목간 유의차는 나타나지 않았다.