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ID 14184
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title alternative
Characteristics of Nutrient discharge in the major river basins of Hiroshima Prefecture.
creator
斎藤 光代
吉田 浩二
峯 孝樹
林 政輝
重枝 豊実
subject
Nutrient discharge
Major river basins
Hiroshima Prefecture
NDC
Pollution. Environmental engineering
abstract
To estimate the nutrient discharge from land to the sea, we conducted hydrochemical investigations of the major rivers at the 15 catchments located in Hiroshima-Prefecture. The results are summarized as follows:1) Seasonal variations of TN load in Ohta river and Ashida river indicate that precipitation have a large effect on the river runoff and TN load change with the amount of river discharge. It also suggests the characteristics of TN discharge with the difference of precipitation.2) The DOC and DN load from the middle-scale and small-scale catchments are estimated to be not small. We confirmed that the DOC and DN load per unit area are relatively large in the small catchments with low urban infrastructure, such as waste water system.3) DOC and DN fluxes mainly changed with the variation of river runoff and land use.
journal title
Memoirs of the Faculty of Integrated Arts and Sciences, Hiroshima University. IV, Science reports
volume
Volume 30
start page
97
end page
105
date of issued
2004-12
publisher
広島大学総合科学部
contributor
国立情報学研究所
issn
1340-8364
ncid
SelfDOI
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School of Integrated Arts and Sciences
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