| File | |
| Title |
農業集水域からの汚濁物質流出特性(I) : 水質変動と流出負荷量
|
| Title |
Pollution Loading Outflows from an Agricultural Basin(I) : Characteristics of Concentrations and Loadings
|
| Title Transcription |
ノウギョウ シュウスイイキ カラノ オダク ブッシツ リュウシュツ トクセイ 1 スイシツ ヘンドウ ト リュウシュツ フカ リョウ
|
| Creator | |
| Source Title |
島根大学農学部研究報告
Bulletin of the Faculty of Agriculture, Shimane University
|
| Volume | 25 |
| Start Page | 99 |
| End Page | 102 |
| Journal Identifire |
ISSN 0370940X
|
| Descriptions |
Abstract
Water qualities and discharge were monitored regularly in the agricultural basin during two irrigation periods and one non-irrigation period. The rate of paddy field in the basin changed within two irrigation periods, I.e. 36% (1988) and 45% (1989) due to conversion to upland field. The loadings were calculated onlyin the dry-weather days，bocause there was a little problem in measuing the discharge.
At the lowest end of the basin, the average concentrations of T-N, T-P and T-COD during the irrigation periods were 2.13mg/1 (1988) 1.68mg/1 (1989), 0.171mg/1 (1988) 0.399mg/1 (1989), and 2.5mg/1 (1988) 4.5mg/1 (1989) respectively. The tendency was found that the pollution loading outflows were higher than the inflow by irrgation. Furthermore ［0utflow loading］-［Inflow loading］during the irrigation period in 1989 were higher than 1988. This may be caused by the large amounts of loading from the paddy fields in the basin． |
| Language |
jpn
|
| Resource Type | departmental bulletin paper |
| Publisher |
島根大学農学部
Shimane University, Faculty of Agriculture
|
| Date of Issued | 1991-12-21 |
| Publish Type | Version of Record |
| Access Rights | open access |
| Relation |
[NCID]
AN00108015
|
