2-3. Nitrogen budget in the Hyakumakidani watershed
Input was calculated from the precipitation observed at the
meteorological station in Toyama City 5 km away from Hyakumakidani and
the total nitrogen concentration in the rainwater collected by a bulk
sampler. Output was calculated from the flow rate of the Hyakumakidani
stream observed every 10 minutes and the nitrate concentration estimated
from the flow rate.