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CHANGES OF SOIL PROPERTIES CAUSED BY REVITALIZATION OF THE ĐURĐEVAC SANDS
Andrija Špoljar
; Visoko gospodarsko učilište u Križevcima, Križevci, Hrvatska
Vlado Kušec
; Visoko gospodarsko učilište u Križevcima, Križevci, Hrvatska
Drago Kamenjak
; Visoko gospodarsko učilište u Križevcima, Križevci, Hrvatska
Ivka Kvaternjak
; Visoko gospodarsko učilište u Križevcima, Križevci, Hrvatska
Tomislava Permin-Volf
; Visoko gospodarsko učilište u Križevcima, Križevci, Hrvatska
Sažetak
Pedological research has been conducted in the region of the Đurđevac sands, which was registered, in 1963., in the Register of protected objects of nature as a special geographic and botanical reserve. At the end of the nineteenth and the beginning of the twentieth century the aeolic sands of Podravina region, from Đurđevac to Virovitica, were afforested with Scottish pine, black pine and false acacia. In that way «the bloody sands of Croatian Sahara» were calmed down, but the measures also meant a great deal of devastation of the area of the geographic and botanical reserve. The protected area covers 19.5 ha of land, and on 6 ha recovery measures have been carried out in order to revitalize aeolic «live» sands by removing undesirable vegetation or by removing humus accumulative layer of the soil by means of mechanization. The effectiveness of the conducted recovery measures was estimated by comparing the state of physical and chemical properties of the soil of the revitalized part and the devastated part of the area. Certain recommendations have been given for further managing the Đurđevac sands reserve with the aim to restore the previous condition in order to preserve the richness of biological and landscape diversity of Croatia. The conducted measures caused the changes in physical and chemical properties of the soil. Better state of physical and most of the chemical properties of the soil were established in the devastated part of the area compared to the recovered part of the area. The result of it is the loss of characteristic floristic and animal species which reduced the biological diversity of the sands. The relevant pedological data were statistically processed using t-test. The conducted measures for recovery of the part of the reserve in order to revitalize it were effective and further implementation in the whole nature reserve area is recommended.
Ključne riječi
Đurđevac sands; physical and chemical properties of soil; changes
Hrčak ID:
26545
URI
Datum izdavanja:
25.7.2006.
Posjeta: 2.100 *