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RISS 인기검색어
- 검색키워드
- 저자 : 김광택 ( Kim Gwang Taeg ) (검색결과 2 건)
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임종환 ( Im Jong Hwan ),김광택 ( Kim Gwang Taeg ),윤충원 ( Yun Chung Won ),신준환 ( Sin Jun Hwan ),배상원 ( Bae Sang Won ) 한국산림과학회 2004 한국산림과학회지 Vol.93 No.1
The information of natural process in forest development is utmost important for ecological forest management and conservation of biodiversity. This study was carried out to understand forest stand dynamics such as structure and productivity change of Pinus pawiflora forest in Ullengdo Island where we established a permanent plot in 1995 year. Forest stand characteristics were investigated in 1995 and 2003. The number of stems larger than 2 cm in DBH was 5,180 per hectare in 1995 and 4,780 in 2003, respectively. Basal area was increased from 60.17 m`/ha to 69.87 m`/ha. and annual biomass increment was 6.89 ton/ha. The annual number of recruited stems was 52.5 per hectare with the rate of recruitment of 1.14% in a year and the mortality was 102.5 stems/ha/year with the mortality rate of 2.13% in a year. Major cause of tree mortality was the suppression by canopy trees, and the mortality rate of individuals smaller than 10 cm in DBH was reached more than 95%. About 78.1% of the dead stems were standing death type. It was considered that the stand was in stem exclusion stage and still growing. And it was predicted that the Pinus panriflora forest would be replaced by Tsuga siebokiii forest if vast disturbance would not happen. It is needed that the researches on the characteristics of regeneration and long-term monitoring of the stand should be carried out for the conservation of the P. parutflora forest.
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광릉 활엽수천연림의 산림식생구조, 입지환경 및 탄소저장량
임종환 ( Lim Jong Hwan ),신준환 ( Shin Joon Hwan ),김광택 ( Kim Gwang Taeg ),천정화 ( Chun Jung Hwa ),오정수 ( Oh Jeong Soo ) 한국농림기상학회 2003 한국농림기상학회지 Vol.5 No.2
연구대상지인 광릉시험림은 한반도의 중서부에 위치하고 있으며 온대활엽수림대에 속한다. 광릉시험림 내소리봉(533.1m) 주변에 1 ha(100m × 100m) 면적의 영구조사지아 플럭스 타워를 설치하였으며 KLTER(한국장기생태연구 네트워크) 연구대상지인 동시에 KoFlux DX-site 연구대상지로 지정되어 있다. 영구조사지에 대해 개체목 위치도를 구축하고 임분의 구조와 토양의 물리적, 화학적 특성을 비롯한 임분구성요소(바이오매스, 토양, 낙엽 등)의 탄소수지를 분석하였다. 이 지역에서의 우점수종은 졸참나무, 서어나무이었으며 갈참나무, 까치박달 등이 함께 자라고 있다. 임분조사 결과 흉고직경 2cm 이상인 임목의 밀도는 1,473본/ha 이었고, 바이오매스량은 261.2톤/ha, 흉고단면적은 28.0㎡이었다. 모암은 화강편마암으로 이루어져 있으며 토양형은 갈색산림토양에 속하고, 토심은 38~66cm, 토성은 양토와 사양토, 산도는 표토?에서 pH4.2~5.0, 심토층에서 pH 4.8~5.2로 나타났다. 지료로부터 1.2m 높이에서 촬영한 반구사진(hemispherical photography)을 이용하여 엽면적지수(LAI)의 계절적인 변화를 측정한 결과 최대 LAI가 3.65이었다. 또한 토양수분함량 및 LAI의 공간적인 분포도를 작성하였다. 이 지역에서의 탄소저장량은 지하부를 포함한 임목에 총 136톤/ha, 낙엽층에 약 5.6톤/ha, 토양층 30cm 깊이까지에 약 92.0톤/ha가 저장되어 있는 것으로 분석되어 총 탄소저장량은 236톤/ha인 것으로 나타났다. 이상에서의 현지조사 및 관측 자료는 산림생태계의 구조와 기능 변화를 예측하기 위한 산림동태 모형을 비롯한 생물지화학적 동역학 모델의 적용에 필요한 모수와 자료로 활용될 것으로 판단된다. The study area, Kwangneung Experiment Forest (KEF) is located on the west-central portion of Korean peninsula and belongs to a cool-temperate broadleaved forest zone. At the old-growth deciduous forest near Soribong-peak (533.1 m) in KEF, we have established a 1 ha permanent plot (100 mx100 m) and a flux towel; and the site was registered as a KLTER(Korean long-term ecological research network) and DK site of KoFlux. In this site, we made a stemmap of trees and analyzed forest stand structure and physical and chemical soil characteristics, and estimated carbon budgets by forest components (tree biomass, soils, litter and so on). Dominant tree species were Quercus serrata and Carpinus laxiflora, and accompanied by Q. aliena, Carpinus cordata, and so on. As a result of a field survey of the plot, density of the trees larger than 2 cm in DBH was 1,473 trees per ha, total biomass 261.2 tons/ha, and basal area 28.0 ㎡/ha. Parent rock type is granite gneiss. Soil type is brown forest soil (alfisols in USDA system), and the depth is from 38 to 66 cm. Soil texture is loam or sandy loam, and its pH was from 4.2 to 5.0 in the surface layer, and from 4.8 to 5.2 in the subsurface layer: Seasonal changes in LAI were measured by hemispherical photography at the 1.2 m height, and the maximum was 3.65. And the spatial distributions of volumetric soil moisture contents and LAIs of the plot were measured. The carbon pool in living tree biomass including below ground biomass was 136 tons C/ha, and 5.6 tons C/ha is stored in the litter layer, and about 92.0 tons C/ha in the soil to the 30 cm in depth. Totally more than about 233.6 tons C/ha was stored in DK site. These ground survey and monitoring data will give some important parameters and validation data for the forest dynamics models or biogeochemical dynamics models to predict or interpolate spatially the changes in forest ecosystem structure and function.
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