Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2007-8-22
pubmed:abstractText
To evaluate the role of a dam reservoir in the runoff of pollutant loadings from a forested watershed, the input-output budgets in the Ikuno dam reservoir had been investigated for eight years since 1996. The T-N, T-P, TOC and major ionic species in the bulk precipitation, stream water, and outflow were measured. The residence time calculated by using the data of the inflow and outflow was 0.3 year. The average precipitation was 1,772 mm during the investigation period (1996-2004). The direct deposition to water surface was less than one percentage to total loadings of nutrients and major ionic species. The ratios of output to input of TOC, TN, and TP were 1.04 to 1.42, and those of major ionic species were from 0.83 to 0.99 except for NO3(-), which was 1.12. However, the ratios of output to input of major ionic species except for NO3(-) at the Ikuno dam reservoir will be larger, and those of NO3(-), TOC, TN, and TP will be smaller, if we also include rain events. These results suggested that the dam reservoir played a role as a sink for pollutants in forested watershed, and that the pollutant loadings to downstream may decrease.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0273-1223
pubmed:author
pubmed:issnType
Print
pubmed:volume
56
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
287-93
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Budgets of major ionic species and nutrients on a dam reservoir in forested watershed.
pubmed:affiliation
Hyogo Prefectural Institute of Public Health and Environmental Sciences, Kobe, Hyogo, Japan. yukio_komai@pref.hyogo.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't