Effects of Forest and Agriculture Land Covers on Organic Carbon Flux Mediated through Precipitation

Gang Sun Kim, Sle Gee Lee, Jongyeol Lee, Eunbeen Park, Cholho Song, Mina Hong, Young Jin Ko, Woo Kyun Lee

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Carbon stored on land is discharged into rivers through water flow, which is an important mechanism for energy transfer from land to river ecosystems. The goal of this study was to identify the relationship between land cover and carbon flux mediated through precipitation. In order to clarify the general relationship, research was conducted on a range of national scales. Eighty‐two watershed samples from an area where the urban land cover area was less than 10% and with a water‐quality measurement point at an outlet were delineated. Carbon flux and soil organic carbon of the watershed was estimated using the Soil and Water Assessment Tool model, Forest Biomass and Dead Organic Matter Carbon model, and other data. Finally, the data were analyzed to determine the relationship between soil organic carbon and carbon flux. As a result, it was concluded that the carbon flux of the watershed increased with increasing area of the watershed. Under the same area con-dition, it was revealed that the greater the forest soil organic carbon, the less the carbon flux released from the watershed. Through this study, it was observed that as the above‐ground biomass of forest increased, the carbon flux from watershed to river outlet decreased logarithmically.

Original languageEnglish
Article number623
JournalWater (Switzerland)
Issue number4
Publication statusPublished - 2022 Feb 1

Bibliographical note

Funding Information:
This research was funded and supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF‐ 2021R1A6A1A10045235) and also supported under the NRF’s framework of an international cooperation program (2021K2A9A1A02101519).

Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.


  • Forest
  • Runoff
  • SWAT
  • Soil organic carbon
  • Watershed

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Biochemistry
  • Aquatic Science
  • Water Science and Technology


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