期刊
FORESTS
卷 12, 期 8, 页码 -出版社
MDPI
DOI: 10.3390/f12080963
关键词
forest regeneration; forest soils; nutrient storage; organic carbon; soil property
类别
资金
- Nation Institute of Forest Science
- National Research Foundation in Korea (NRF) - Korea government (MIST) [2020R1A2C1005791]
- National Research Foundation of Korea [2020R1A2C1005791] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This study compared the distribution of carbon (C) and nitrogen (N) in an exotic Japanese cedar plantation and a natural Serrata oak stand in South Korea. Results showed that the C concentrations were higher and N concentrations were lower in the Japanese cedar plantation, and reforestation with the exotic species increased C and N stocks. N stocks in aboveground biomass were influenced by N concentrations or C stocks in tree components, while soil C and N stocks were negatively related to soil fertility parameters like C/N ratio.
This study compared carbon (C) and nitrogen (N) distribution at a stand level in an exotic Japanese cedar (Cryptomeria japonica D. Don) plantation and a natural Serrata oak (Quercus serrata Murray) stand growing under similar site conditions in South Korea. The aboveground biomass (stems, branches, and leaves) of 20 trees (10 of each species), the forest floor, and the mineral soils to a depth of 30 cm were sampled to determine C and N concentrations. Except in branches, C concentrations were significantly higher (p < 0.05) in the Japanese cedar plantation than in the Serrata oak stand, whereas N concentrations, except in the stem bark, were significantly lower in the Japanese cedar plantation. Reforestation with an exotic coniferous species significantly increased the C stocks in the aboveground biomass and the N stocks in the forest floor and mineral soils compared with a natural oak stand. The N stocks in the aboveground biomass were dependent on either the N concentrations or the C stocks in the tree components, whereas soil C and N stocks were negatively related to soil fertility parameters such as C/N ratio. Although it is uncertain which factors are responsible for the difference in aboveground C and soil N stocks following the establishment of Japanese cedar plantations on former natural Serrata oak stands, tree replacement may have an impact on C and N allocation within different forest compartments.
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