Impacts of the national forest rehabilitation plan and human-induced environmental changes on the carbon and nitrogen balances of the South Korean forests
The carbon (C) balance is a key to the climate regulation role of forests, and the nitrogen (N) balance affects forest productivity, ground and surface water quality, and the emission of N2O. Humans have impacted the C and N balances, but quantification of the responses of forests to human activities is limited. This study aimed to quantify the impacts of the long-term national forest rehabilitation plan and the contribution of the increase in air temperature, CO2 concentration, and N deposition on the C and N balance of the South Korean forests during 1973–2020 by using a biogeochemical model. The C and N balance increased from 0.20 to 4.30 Mg C ha–1 year–1 and from 0.20 to 17.4 kg N ha-1 year-1, respectively. This led to the whole South Korean forests to newly store 825 Tg C and 3.04 Tg N after the national forest rehabilitation plan. The increase in air temperature, CO2 concentration, and N deposition contributed –11.5, 17.4, and 177 Tg C for the newly stored C stock, respectively, and –25.4, 8.90, and 1,807 Mg N for the newly stored N stock, respectively. This study would provide references on the benefits of forest rehabilitation for the C and N balance and for future forest rehabilitation efforts. Moreover, our findings improve the understanding of the impacts of human activities on the C and N balance. Keywords: Carbon, Nitrogen, South Korean forests, Climate change, Human impacts ID: 3622951
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| Format: | Article biblioteca |
| Language: | English |
| Published: |
FAO ;
2022
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| Online Access: | https://openknowledge.fao.org/handle/20.500.14283/CC1234EN http://www.fao.org/3/cc1234en/cc1234en.pdf |
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| Summary: | The carbon (C) balance is a key to the climate regulation role of forests, and the nitrogen (N) balance affects forest productivity, ground and surface water quality, and the emission of N2O. Humans have impacted the C and N balances, but quantification of the responses of forests to human activities is limited. This study aimed to quantify the impacts of the long-term national forest rehabilitation plan and the contribution of the increase in air temperature, CO2 concentration, and N deposition on the C and N balance of the South Korean forests during 1973–2020 by using a biogeochemical model. The C and N balance increased from 0.20 to 4.30 Mg C ha–1 year–1 and from 0.20 to 17.4 kg N ha-1 year-1, respectively. This led to the whole South Korean forests to newly store 825 Tg C and 3.04 Tg N after the national forest rehabilitation plan. The increase in air temperature, CO2 concentration, and N deposition contributed –11.5, 17.4, and 177 Tg C for the newly stored C stock, respectively, and –25.4, 8.90, and 1,807 Mg N for the newly stored N stock, respectively. This study would provide references on the benefits of forest rehabilitation for the C and N balance and for future forest rehabilitation efforts. Moreover, our findings improve the understanding of the impacts of human activities on the C and N balance.
Keywords: Carbon, Nitrogen, South Korean forests, Climate change, Human impacts
ID: 3622951 |
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