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(Article of periodic en Anglais - 2009)

Document title

Elevated sedimentation in lake records linked to agricultural activities in the Ishikari River floodplain, northern Japan

Authors(s) and Affiliation(s)

AHN Y.S. (1 4) ; NAKAMURA F. (1) ; KIZUKA T. (2) ; NAKAMURA Y. (3) ;
(1) Dep. of Forest Science, Graduate School of Agriculture, Hokkaido Univ., Sapporo, JAPON
(2) Dep. of Agricultural Engineering, Graduate School of Agriculture, Hokkaido Univ., Sapporo, JAPON
(3) Inst. of Seismology and Volcanology, Graduate School of Science, Hokkaido Univ., Sapporo, JAPON
(4) Division of Forest Soil Conservation, Dep. of Forest Environment, Korea Forest Research Inst., Seoul, COREE, REPUBLIQUE DE

Abstract

The purpose of this study was to examine the historical change in sedimentation rates in lakes that have been impacted by river regulation and agricultural activities in the Ishikari River floodplain. The AA. dated sediment cores using 137Cs dating and tephrochronology, and they estimated sediment sources from 137Cs concentrations in the topsoil of representative land covers (river banks, adjacent floodplains, cultivated lands, and reed swamps). They then focused on the changes in the lake sedimentation rate before and after the establishment of agricultural drainage network. Third, they compared the sedimentation rates from drainage networks across 8 different lakes, each of which is associated with different surrounding land-use conditions. Their approach included analyses of the catchment-derived 137Cs contribution and the 137Cs inventory. Discussion of the results

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2009, vol. 34, no12 [pp. 1650-1660]

Bibliographic references : 26 ref.

Collation : 8 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1854

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2010
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