This study was to present basic information for implementing comprehensive development plan of recreational forest and increasing the productivity in production of forest goods. Followings are the summary of the analysis of biomass in Geum-Gang Recrea...
This study was to present basic information for implementing comprehensive development plan of recreational forest and increasing the productivity in production of forest goods. Followings are the summary of the analysis of biomass in Geum-Gang Recreational Forest.
1. Communities by characteristic in species composition of Geum-Gang Recreational Forest were classified into Pinus densiflora community, Quercus variabilis community, Quercus acutissima community.
2. According to the analysis of soil characteristics as per major three kinds of stands(Pinus densiflora stand, Quercus variabilis stand, Quercus acutissima stand), soil pH, organic matter, and cation exchange capacity were ranged from 4.32 to 4.53, 2.17 to 2.72%, and 5.64 to 7.04me/100g, respectively. Thus, comparing with general soil condition of forest in Korea, Geum-Gang Recreational Forest had low soil nutrition and acidic soil condition.
3. Mean age of Pinus densiflora stand were 33.5 years, 9.1m in height, and 1,001 numbers of trees per hectare. Mean age of Quercus variabilis stand were 31.4 years, 12.5m in height, and 924 numbers of trees per hectare. And, mean age of Quercus acutissima stand were 32.9 years, 13.9m in height, and 803 numbers of trees per hectare. There was no differences in the stand characteristics among the study stands.
4. Total aboveground biomass was 138.06ton/ha, the highest biomass production among the stands in Geum-Gang Recreational Forest, in Quercus acutissima stand, 111.07ton/ha in Quercus variabilis stand, and 50.86ton/ha in Pinus densiflora stand.
5. Aboveground total net primary production was estimated at 8.96ton/ha/year in Quercus variabilis stand, 6.28ton/ha/year in Quercus acutissima stand, and 4.09ton/ha/year in Pinus densiflora stand.
6. The Pinus densiflora stand, Quercus variabilis stand and Quercus acutissima stand were similar in the mean age and soil characteristics. However, considering high density in middle and less class diameter in Pinus densiflora stand, the growth rate of Quercus acutissima and Quercus variabilis stands was higher than in Pinus densiflora. stands. As diameter increase, dry weight increased in order of Quercus acutissima stand, Quercus variabilis stand, and Pinus densiflora stand. As well, tree component ratio of stem wood and stem bark was decrease at high DBH class, but tree component ratio of live branches was increase, and the presents biomass accumulation ratio, the index of adaptibility to environment., was 12.40% in Quercus variabilis stand and 21.98% in Quercus acutissima stand.