Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-10T20:32:24.366Z Has data issue: false hasContentIssue false

The Effects of Rainfall on Carbon Isotopes of POC in the Teshio River, Northern Japan

Published online by Cambridge University Press:  18 July 2016

Takafumi Aramaki*
Affiliation:
Environmental Chemistry Division, National Institute for Environmental Studies, 16-2, Onogawa, Tsukuba, Ibaraki 305-8506, Japan
Seiya Nagao
Affiliation:
Low Level Radioactivity Laboratory, KU-INET, Kanazawa University, Wake, Nomi, Ishikawa 923–1224, Japan
Yo-hei Nakamura
Affiliation:
Faculty of Environmental Earth Science, Hokkaido University, N5W10, Kita-ku, Sapporo 060-0810, Japan
Masao Uchida
Affiliation:
AMS Facility (NIES-TERRA), National Institute for Environmental Studies, 16-2, Onogawa, Tsukuba, Ibaraki 305–8506, Japan
Yasuyuki Shibata
Affiliation:
AMS Facility (NIES-TERRA), National Institute for Environmental Studies, 16-2, Onogawa, Tsukuba, Ibaraki 305–8506, Japan
*
Corresponding author. Email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

During a rainfall event in early September 2006, the transport behavior of particulate organic carbon (POC) in a small river (Teshio River, northern Japan) with alluvial plain and forest characteristics was investigated chiefly with carbon isotopes. The radiocarbon (Δ14C value) of POC varied widely from –56%‰ at the beginning of the rain event to –10%‰ at peak rainfall. The Δ14C values have a positive correlation with C/N ratios and a negative correlation with Δ13C values except for the data from when both turbidity and water level were at their maximums due to rainfall. These results indicate that the sources of organic matter in the river come from the surface layer of soil as the water level rises during a rainfall event.

Type
Methods, Applications, and Developments
Copyright
Copyright © 2010 by the Arizona Board of Regents on behalf of the University of Arizona 

References

Gupta, LP, Subramanian, V, Ittekkot, V. 1997. Biogeochemistry of particulate organic matter transported by the Godavari River, India. Biogeochemistry 38(2):103–28.Google Scholar
Hedges, JI. 1992. Global biogeochemical cycles: progress and problems. Marine Chemistry 39(1–3):6793.Google Scholar
Hedges, JI, Keil, RG, Benner, R. 1997. What happens to terrestrial organic matter in the ocean? Organic Geochemistry 27(5–6):195212.CrossRefGoogle Scholar
Ileva, N, Shibata, Y, Satoh, F, Sasa, K, Ueda, H. 2009. Relationship between the riverine nitrate-nitrogen concentration and the land use in the Teshio River watershed, North Japan. Sustainability Science 4(2):189–98.Google Scholar
Ittekkot, V. 1988. Global trends in the nature of organic matter in river suspensions. Nature 332(6163):436–8.Google Scholar
Japan Meteorological Agency. 2009. Weather, climate and earthquake information [WWW]. http://www.data.kishou.go.jp/.Google Scholar
Kitagawa, H, Masuzawa, T, Nakamura, T, Matsumoto, E. 1993. A batch preparation method of graphite targets with low background for AMS 14C measurements. Radiocarbon 35(2):295300.CrossRefGoogle Scholar
Koarashi, J, Iida, T, Asano, T. 2005. Radiocarbon and stable carbon isotope compositions of chemically fractionated soil organic matter in a temperate-zone forest, Journal of Environmental Radioactivity 79(2):137–56.CrossRefGoogle Scholar
Kume, H, Shibata, Y, Tanaka, A, Yoneda, M, Kumamoto, Y, Uehiro, T, Morita, M. 1997. The AMS facility at the National Institute for Environmental Studies (NIES), Japan. Nuclear Instrument and Methods in Physics Research B 123(1–4):31–3.CrossRefGoogle Scholar
Liu, W, Moriizumi, J, Yamazawa, H, Iida, T. 2006. Depth profiles of radiocarbon and carbon isotopic compositions of organic matter and CO2 in a forest soil. Journal of Environmental Radioactivity 90(3):210–23.Google Scholar
Masiello, CA, Druffel, ERM. 2001. Carbon isotope geochemistry of the Santa Clara River. Global Biogeochemical Cycles 15(2):407–16.Google Scholar
Meybeck, M. 1982. Carbon, nitrogen, and phosphorous transport by world rivers. American Journal of Science 282:401–50.Google Scholar
Meybeck, M. 1993. Riverine transport of atmospheric carbon: sources, global typology, and budget. Water, Air, & Soil Pollution 70(1–4):443–63.Google Scholar
Milliman, JD, Syvitski, JPM. 1992. Geomorphic-tectonic control of sediment discharge to the ocean: The importance of small mountainous rivers. Journal of Geology 100(5):525–44.Google Scholar
Ministry of Land, Infrastructure, and Transport. 2009. Water information system [WWW]. http://www1.river.go.jp/.Google Scholar
Moreira-Turcq, P, Seyler, P, Guyot, JL, Etcheber, H. 2003. Exportation of organic carbon from the Amazon River and its main tributaries. Hydrological Processes 17(7):1329–14.CrossRefGoogle Scholar
Nagano, T, Yanase, N, Tsuduki, T, Nagao, S. 2003. Particulate and dissolved elemental loads in the Kuji River related to discharge rate. Environment International 28(7):649–58.Google Scholar
Nagao, S, Usui, T, Yamamoto, M, Minagawa, M, Iwatsuki, T, Noda, A. 2005. Combined use of Δ14C and δ13C values to trace transportation and deposition processes of terrestrial particulate organic matter in coastal marine environments. Chemical Geology 218(1–2):6372.Google Scholar
Paolini, J. 1995. Particulate organic carbon and nitrogen in the Orinoco River (Venezuela). Biogeochemistry 29(1):5970.Google Scholar
Raymond, PA, Bauer, JE. 2001. Riverine export of aged terrestrial organic matter to the North Atlantic Ocean. Nature 409(6819):497500.CrossRefGoogle ScholarPubMed
Stuiver, M, Polach, HA. 1977. Discussion: reporting of 14C data. Radiocarbon 19(3):355–63.CrossRefGoogle Scholar
Trumbore, S. 2000. Age of soil organic matter and soil respiration: radiocarbon constraints on belowground C dynamics. Ecological Applications 10(2):399411.Google Scholar
Trumbore, SE, Harden, JW. 1997. Accumulation and turnover of carbon in organic and mineral soils of the BOREAS northern study area. Journal of Geophysical Research 102(D24):28,81730.Google Scholar