Biomass and Net Primary Production of Quercus mongolica Stands in Kwangyang, Pyungchang, and Youngdong Areas

摘要

This study was carried out to estimate aboveground biomass and net primary product ion (NPP) in an average 42-years-old Quercus mongolica stand in Kwangyang area, 52-years-old Quercus mongolica stand in Pyungchang area, and 36-years-old Quercus mongolica stand in Youngdong area. Nine sample trees were cut in each stands and soil samples were collected in July to August, 2002. Estimation for aboveground biomass and net primary production were made by the equation model Wt = aD~b where Wt is oven dryweight in kg and D is DBH in cm. Total aboveground biomass was 62.35ton/ha in Kwangyang area, 156.0ton/ha in Pyungchang area, and 110.3ton/ha in Youngdong area. The proportion of each tree component to total aboveground biomass was high in order of bolewood, branches, bolebark and leaves in the three forests. Aboveground total net primary production was estimated at 5.79ton/ha in Kwangyang area, 10.31ton/ha in Pyungchang area, and 11.36ton/ha in Youngdong area.