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Researches of Soil Changes in the Pinus and Robinia Forest on Durdevacki SANDS AREA

Vrbek, B.; Pilas, I.

Sumarski List 135: 230-238

2011


ISSN/ISBN: 0373-1332
Accession: 070669360

In the area of Durdevacki pijesci (Northern Croatia), at the end of 19th ct, forestation with the Scotch and Austrian pine has been carried out; later on it has been performed with the black Locust as well, the aim of which was to calm the active sands down and to stop the "Croatian desert" to spread, together with improving of the ecological life conditions. After about 100 years, this work analyses the forest vegetation influence on some soil characteristics and crop productivity. The investigated vegetation spread in an area of forest community of Peduncled Oak and Common Horn-beam (Carpino betuli-Quercetum roboris, Anic 1956 ex. Raus 1969). The average annual precipitation quantity is 950 mm; the average annual air temperature is 10,1 oC. The parent material of soils contains 78-80 % SiO2 and 2-4 % CaO + MgO. The most important results of these researches are: On sand area in north Croatia (Durdevacki Pijesci) in the period of 90-110 years under the forest of Austrian pine, Scotch pine and Black Locust there has been formed - Rubic, Folic, Protic, Endogleyic, Haplic Arenosols (Dystric, Greyic, Novic, Transportic). From the mentioned research and soil data it can be concluded that the forest vegetation had a strong influence on a progressive direction of the soil evolution. The sands represent a very recent pedogenetic formation belonging mainly to the genetic-evolutionary stage of leached sirozem (grey desert soils) with a tendency of future development towards the initial Leptosol (Ranker).

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