Studies on the soil cover from the Negraşi "Narcissus glade" natural reserve, Argeş County.

Abstract

The southmost wild narcissus (Narcissus stellaris) reservation in Romania is found on the territory of Negrasi township in Arges County, on the lower terrace of Dâmbovnic river. The glade has a surface of 4.1 ha and has been declared protected area since 1966. The blooming takes place during April-May, the rest of the year the glade being used as pasture. The only intervention in the area has been digging a perimetric ditch which maintains relatively constant the underground water level and placing an aspen tree strip. During the blossoming period, a series of folkloric events take place here. The river terrace is characterized by typical (haplic) and litic Gleysols, with underground water level close to 1 meter. Soil texture is medium and coarse, with some rock fragments at the base of the profile. The reaction is moderate-strongly acid, native fertility being generally low. Although it does not directly influence the glade, Dâmbovnic river has been for decades polluted with oil residues, at the present moment its waters being clean and the specific flora and fauna thrive again. The latest analysis performed by specialized laboratories didn’t reveal any pollution with heavy metals or organic - chloride insecticides. Without harmfulness climate changes and if people continue to respect nature, is the future of glade for long ensured.