3.3. Spatial in-stream inorganic nutrients and TSS modeling
SAR analysis showed the significant spatial relationships between arable
land and water quality indicators, particularly
N-NO3- and TSS, for the Mszanka
surface waters. For the Smugawka surface waters, a significant spatial
relationship was revealed between arable land and the
P-PO43- concentrations (Table 4). A
significant spatial relationship was observed between permanent
grasslands and the P-PO43- and TSS
concentrations in Mszanka, whereas only the concentration of
N-NH4+ was associated with grasslands
in Smugawka (Table 5). The forested part of the catchment areas showed
significant spatial relationships between the
N-NO3- concentration and the Mszanka
surface water, but there were no significant relationships between the
forested region and water indicators of the Smugawka stream (Table 6).
Table 4 A spatial autoregression model for nutrient concentration and TSS in
watercourses flowing through arable land.