Assessment of watersheds monitoring
nThe highest N losses (15.3
kg N ha-1) determines more intensive
agricultural activity in Graisupis (71.5 kg N ha-1 of fertilisers; 54% of arable land; 0.87 LU
ha-1);
nClose to the
sea (Lyzena) are bigger water discharges in winter but
due to low N content in soil (32.9 kg N ha-1 of
fertilisers, 74% of grassland) the annual N losses are very small
(5.7 kg N ha-1);
nThe highest P
losses (0.318 kg P ha-1) determine Vardas hilly relief
and clay soil;
n Bigger specific water runoff (0.08 l s-1 ha-1) and light soils (sandy loam) determine
comparatively high N losses (11.9
kg N ha-1) despite low farming
activity (39.4 kg N ha-1 of fertilisers, 45% of
grassland) in Vardas watershed.