瀬戸内海沿岸小河川における硝酸性窒素負荷量 : 果樹園面積・溜池・扇状地の効果
広島大学総合科学部紀要. IV, 理系編 Volume 28
Page 77-84
published_at 2002-12
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| File | |
| Title ( jpn ) |
瀬戸内海沿岸小河川における硝酸性窒素負荷量 : 果樹園面積・溜池・扇状地の効果
|
| Title ( eng ) |
NO_3^--N Flux of Streams in the Setouchi Region : Effects of Fruit-Farmland Area, Water Reservoir, and Alluvial Fan
|
| Creator |
Saito Mitsuyo
Takei Tsutomu
Nishimune Naoyuki
|
| Contributors | 国立情報学研究所 |
| Source Title |
広島大学総合科学部紀要. IV, 理系編
Memoirs of the Faculty of Integrated Arts and Sciences, Hiroshima University. IV, Science reports
|
| Volume | 28 |
| Start Page | 77 |
| End Page | 84 |
| Abstract |
To confirm the effects of fruit-farmland area, water reservoir, and alluvial fan on nitrate load in short streams, we measured runoff and collected water samples at five or eight sites in each of four streams, Seto Inland Sea catchment. Nitrate load of the streams increased with increasing ratio of fruit-farmland area. At a downstream site of water reservoir, nitrate concentration showed a slight decrease. On the area widely domi- nated by alluvial fan, it assumed that groundwater pollution by nitrate-nitrogen is accelerated with groundwater recharge of stream water. It is necessary for conservation of water resources to consider function of these effects as well as river-groundwater mixing.
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| Keywords |
Setouchi region
NOj'-Nflux
Fruit-farmland area
Reservoir
Alluvial fan
|
| NDC |
Agriculture [ 610 ]
|
| Language |
jpn
|
| Resource Type | departmental bulletin paper |
| Publisher |
広島大学総合科学部
|
| Date of Issued | 2002-12 |
| Publish Type | Version of Record |
| Access Rights | open access |
| Date |
[Created] 2006-03-21
|
| Source Identifier |
[ISSN] 1340-8364
[NCID] AN10435936
|
