Earticle

초록

영어

This study aimed to analyze long-term changes in soil CO2 flux (Rsoil, soil respiration) using a chronosequence approach in forests affected by forest fires on the east coast of Korea. Rsoil was measured seasonally along with soil temperature and moisture to assess its response to environmental variation. Additionally, soil physicochemical properties and fine root (≤2 mm) biomass were analyzed to investigate their correlations with Rsoil. Total carbon (TC) and nitrogen (TN) concentration in soil, and fine root biomass were initially low, peaked during the mid-recovery stage, and then tended to stabilize, whereas soil permeability, sand, silt, and clay contents exhibited distinct patterns. Rsoil increased exponentially with soil temperature, showing higher coefficient of determination (R2) in late recovery stage (0.67) and unburned stands (0.72) than in early stage (0.30). Temperature sensitivity (Q10) of Rsoil showed no significant differences among recovery stages, however the Q10 values exhibited relatively low in early stage compared to other stages. The relationship between soil moisture and Rsoil was weak overall, except in the unburned (R2=0.27, p＜0.01). Rsoil at 20°C (R20, μmol CO2 m-2 s-1) increased with the duration of recovery, with values of 2.38±0.34, 4.11±0.25, 3.14±0.13, and 4.23±0.38 in early-, mid-, late stages, and unburned, respectively. R20 was positively correlated with soil permeability, TC, TN, and fine root biomass (p＜0.05). These findings highlight the importance of Rsoil as an indicator of soil recovery, contribute to the assessment of post-fire soils and the understanding of soil carbon dynamics.

목차

Abstract
Introduction
Materials and Methods
Site description
Soil physicochemical properties and root traits
Measurement of Rsoil, Tsoil, and SWC
Data analysis
Results and Discussion
Soil physicochemical properties and root traits
Responses of Rsoil to Tsoil and SWC
Soil CO2 fluxes at recovery stages
Correlations between R20 and soil physicochemical and root traits
Conclusion
Acknowledgements
References

키워드

저자

• Ji Won Jang [ Department of Forestry and Environmental Systems, Kangwon National University ]
• Seung Won Lim [ Department of Forestry and Environmental Systems, Kangwon National University ]
• Se Hee Lee [ Department of Forestry and Environmental Systems, Kangwon National University ]
• Kyu Hong Song [ Department of Forestry and Environmental Systems, Kangwon National University ]
• Min Woo Park [ Department of Forestry and Environmental Systems, Kangwon National University ]
• Nam Jin Noh [ Department of Forestry and Environmental Systems, Kangwon National University/Department of Forest Resources, Kangwon National University ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  Journal of Forest and Environmental Science [산림과학연구]

• 간기

  계간

• pISSN

  2288-9744

• eISSN

  2288-9752

• 수록기간

  1981~2025

• 등재여부

  KCI 등재

• 십진분류

  KDC 526 DDC 634