DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 3-5/1991 str. 93 <-- 93 --> PDF |
— Križevci R = 0,53** and regression y = 6,397—0,08155 x + 0,001053x2 — Koprivnica R = 0,29* and regression y = 6,08—0,04957 x + 0,000729x2 — Varaždin R = 0,32* and regression y = 6,776—0,024024 x + 0,00024019x2 (See graphs 2, 3) According to computed regressions, daily precipitation over 11,4 mm in Križevci and over 11,5 mm in Koprivnica have on an average reaction (pH) lower than 5,6. Between variations of average daily air temperatures and precipitation reaction for some months were computed correlations and regressions which show table 3 and graph 4. It was determined that stronger cyclones and cold air fronts which come from west, north-west and north Europe to our areas bring, as a rule, acid precipitation. Index words: precipitation reaction (pH), precipitation amount, acid precipitation, average daily air temperature, correlations, regressions |