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2014 Fiscal Year Final Research Report

Genesis of sediments and their functions for nutrient cycling in the tropical dam reservoir

Research Project

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Project/Area Number 25660149
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Aquatic bioproduction science
Research InstitutionNational Institute for Environmental Studies

Principal Investigator

MURATA Tomoyoshi  独立行政法人国立環境研究所, 地域環境研究センター, 主任研究員 (50332242)

Co-Investigator(Renkei-kenkyūsha) HIROKI Mikiya  独立行政法人国立環境研究所, 生物・生態系環境研究センター, 主任研究員 (40142103)
TOMIOKA Noriko  独立行政法人国立環境研究所, 地域環境研究センター, 主任研究員 (40168399)
FUKUSHIMA Michio  独立行政法人国立環境研究所, 生物・生態系環境研究センター, 主任研究員 (10291048)
Research Collaborator JUTAGATE Tuantong  Ubon Ratchathani University, Associate Professor
UTSUGAWA Toru  カテナ研究所, 所長
Project Period (FY) 2013-04-01 – 2015-03-31
Keywords底質 / 熱帯 / ダム貯水池 / 栄養塩 / 循環
Outline of Final Research Achievements

The objective of this study is to clarify the following issues regarding bottom environments in dam reservoirs in Lower Mekong River Basin(LMB): 1) sedimentation process, especially of phosphorus and 2) functional evaluation of reaction states for nutrient cycles such as phosphorus.Inorg- and Org-P are correlated to clay and Fe oxide contents, probably through the adsorption of P constituents onto the surface of clay and/or Fe oxides. Especially, lakeshores of Tonle Sap had high Inorg-P, owing to human activity in riparian villages.

Free Research Field

土壌学

URL: 

Published: 2016-09-02  

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