黒瀬川流域における窒素流出の空間分布特性とそれに及ぼす地形の影響

Spatial variation in nitrogen export from various catchments and topographic effects on it in Kurose River Catchment

峯 孝樹

小野寺 真一

齋藤 光代

吉田 浩二

重枝 豊実

竹井 務

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

To evaluate the spatial variation of nitrogen flux in urban-suburban catchments, topographic influenceson nitrate concentration, flux and runoff were examined at nineteen small catchments. The results indicatedno correlations between topographic parameters on one hand and NO3--N concentration, flux, and runoff,respectively. These results suggest that both of runoff and NO3--N concentration is controlled by factors such asland use and artificial factor. On the other hand, the fluctuation of NO3--N concentration decreases with increasein the catchment area. This means that we can estimate the common values of them in such catchment size.

nitrate-nitrogen flux

water pollution

geographical features

地球科学・地学・地質学 [ 450 ]

日本語

広島大学総合科学部

[ISSN] 1340-8364

[NCID] AN10435936