Journal of Korean Society of Forest Science (한국산림과학회지)
- Volume 88 Issue 2
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- Pages.266-272
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- 1999
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- 2586-6613(pISSN)
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- 2586-6621(eISSN)
Aboveground Nutrient Distribution in Pitch Pine (Pinus rigida) and Japanese Larch (Larix leptolepis) Plantations
리기다소나무와 낙엽송조림지(落葉松造林地)의 지상부(地上部) 양분분포(養分分布) 특성(特性)
- Kim, Choonsig (Forestry Research Institute)
- 김춘식 (임업연구원)
- Received : 1999.02.24
- Published : 1999.06.30
Abstract
Aboveground biomass and nutrient contents of a 31-year-old pitch pine(Pinus rigida) and a 31-year-old Japanese larch(Larix leptolepis) plantations were measured in the Chungbu Forest Experiment Station, Kyunggi Province. Aboveground biomass was 170.2ton/ha in the pitch pine and 87.2ton/ha in the Japanese larch plantations. Aboveground biomass difference between both plantations was due to the difference of stand density. Aboveground biomass in both plantations was allocated as follows : stemwood>branch>stembark>needle. The concentrations of all nutrients(N, P, K, Ca, Mg) were generally higher in the Japanese larch needle than in the pitch pine because of high nutrient uptake characteristics of larch compared with pine tree species. The nutrient concentration in different tree tissues in both tree species decreased in the order of needle>branch>stembark>stemwood. Nutrient contents of aboveground biomass were : N, 335.9 ; P, 40.4 ; K, 121.4 ; Ca, 188.6 ; Mg, 93.8kg/ha in the pitch pine plantation, while nutrient contents in the Japanese larch plantation were : N, 226 ; P, 11.5 ; K, 72.9 ; Ca, 75.7 ; Mg, 37.1kg/ha. The nitrogen use efficiency calculated as the biomass produced by one unit of nitrogen was higher in the pitch pine than in the Japanese larch plantations. This result suggests that pine with high nitrogen use efficiency could be adapted in lower site productivity area compared with larch tree species.
경기도 광릉의 중부임업시험장내 31년생 리기다소나무와 낙엽송조림지를 대상으로 임분별 3개의