Effect of draining on nitrogen flow

Strony 441-460 : ilustracje ; 27 cm

The objective of this work was to present seasonal dynamics of flow of nitrogen forms through fens prior to and just after their drainage, as well as to demonstrate relationships between parameters of the flow. Inflow of inorganic nitrogen forms to undrained mires clearly predominates outflow, whereas remarkable losses of N-NO3 occur after mire drainage. An influence of hydrochemical parameters -N-NH4, N-NO3 and DON concentrations in subsurface water inflowing to two undrained mires and volume of water inflow on budgets (inflow - outflow) of nitrogen forms was examined. The analysis was performer for months when the mires were flooded and for the dry period, separately. Budgets of inorganic nitrogen forms are clearly affected by their concentrations in inflow water. During the wet period, hydrological factor plays also certain role. Inflow of N-NO3 and N-NH4 significantly influenced DON budget. Moreover, some interactions between DON and N-NH4 was found.

Bibliografia na stronach 459-460

Pages 441-460 : illustrations ; 27 cm

Bibliographical references (pages 459-460)

Streszczenie w języku polskim

Abstract in Polish