Wyznaczanie optymalnej sieci zagłębień śródpolnych w celu ochrony zasobów gatunków dziko rosnących w krajobrazie rolniczym

Abstract

Employing a developed equation for determining the coefficient of naturalness a valorization of 55 randomly selected mid-field depressions occurring in the South Kujawy region was carried out to estimate the naturalness of their floras. While investigating the dependence between the number of species and increase in areas of "kettle lakes" it was calculated that at least 20 mid-field depressions of total area not smaller than 14.5 ha per each 10 km² should be preserved to protect 90% of plants growing in the investigated habitats.