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The history and natural regeneration of a secondary oak-beech woodland on a former wood-pasture in Hungary

100%

Varga A., Odor P., Molnar Z., Boloni J.

Acta Societatis Botanicorum Poloniae

2015

tom 84

nr 2

Characteristic features of European woodland include both a reduction in natural forest areas and an increase in former agricultural areas occupied by secondary woodland. The management of these areas is challenging in terms of nature conservation, agricultural and forestry management and policy. The aim of our study was to reconstruct the history and to document the current tree stand structure for a secondary oak-beech woodland in Hungary. Towards the end of the 1800s, this area which was once almost completely occupied by a continuous forest, had been transformed into a wood-pasture. As a result of its gradual abandonment, the closed forest stand of the pasture increased from 10 to 52% between 1963 and 2005. The most characteristic feature of this woodland is the abundance of large trees. Globally, the number of large and ancient trees is rapidly diminishing. Therefore preserving and maintaining such areas, where large trees could live, is an essential management task.

Changes in altitudinal vegetation patterns in fir forests of Beskid Niski Mountains caused by change in forest cover

80%

Durak T.

Polish Journal of Environmental Studies

2009

tom 18

nr 2

197-205

The species richness pattern exhibits a strong altitudinal dependence which may be altered under the influence of land use-related disturbances. The Beskid Niski Mountains are part of the northern Carpathian Mountains – an area that saw a large-scale relocation of certain ethnic groups after World War II. The subsequent rapid decline in the human population level was the main factor shaping the environment in this area, and contributed to a rapid increase in the forest area, also introducing changes in its functioning. The increase in the forest area was not evenly distributed, showing the largest values at higher locations. The present study is focused on changes in the species richness of the Carpathian fir forests along the altitudinal gradient, in relation to socio-economical transformations. The changes indicated an overall decrease in species richness, especially at higher locations. The main reason for these changes seemed to be forest management-related, causing an increase in the share of blackberry, fern and grass species, as well as the disappearance of species diagnostic of the ancient forests, which led to homogenization of vegetation. The increase in the mountain forest area has proven to be insufficient to secure the species richness of forests.

Ograniczanie wyników

1 Acta Societatis Botanicorum Poloniae

1 Polish Journal of Environmental Studies

1 Boloni J.

1 Durak T.

1 Molnar Z.

1 Odor P.

1 Varga A.

1 2015

1 2009

Wyniki wyszukiwania

The history and natural regeneration of a secondary oak-beech woodland on a former wood-pasture in Hungary

Changes in altitudinal vegetation patterns in fir forests of Beskid Niski Mountains caused by change in forest cover