Earticle

초록

영어

To investigate how biogeochemical processes affect the concentrations and fluxes of dissolved organic matter (DOM) in forested watersheds, the quantity and quality of DOM at the Arbutus Lake Watershed, Adirondack Park (NY, USA) was studied. Spatial and temporal patterns of the quantity (bioavailable/refractory concentrations) and quality (δ13C, aromaticity, and low (LMW; < 1kDa) and high molecular weight (HMW; > 1kDa) of dissolved organic carbon (DOC), nitrogen (DON), and sulfur (DOS) was investigated. DOC and DON constituents passing through a wetland were composed of highly refractory, aromatic HMW components compared to upland streams. DOS was dominated by the refractory, LMW form. A “bioavailability-molecular size model” was developed showing the refractoriness of the LMW DOS compared to the HMW DOC and DON. Also, isotopic signatures of DOS in the inlet catchment of the Watershed revealed that the incorporation of reduced S (e.g., SH-) derived from bacterial dissimilatory sulfate reduction contributed to generating DOS in ground and surface waters. These results provide new information on mechanisms for geochemical DOS formation in forested catchments. Overall, this study highlighted novel approaches comparing sources and transformation of three elemental DOM fractions of DOC, DON, and DOS along various watershed components and a lake nested forested watersheds.

저자

• Philgoo Kang [ Natural Environmental Research Division, National Institute of Environmental Research, Incheon 22689, Republic of Korea ]
• Myron J. Mitchell [ Department of Environmental Resources Engineering, State University of New York-College of Environmental Science and Forestry, Syracuse, New York 13210, USA ]
• Sang-Deok Lee [ Division of Forest Science, Kangwon National University, Chuncheon 24341, Republic of Korea ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  강원대학교 산림과학연구소 학술대회

• 간기

  부정기

• 수록기간

  2017~2024

• 십진분류

  KDC 526 DDC 634