APPLICATION OF GIS TECHNIQUES AND FLOOD MODELING AS A TOOL FOR SUPPORTING SUSTAINABLE AGRICULTURE
Jarosław CHORMAŃSKI
Kinga ZAKRZEWSKA
Abstrakt
Implementing sustainable agriculture is decreasing the negative influence of agriculture on the environment. This issue has become of great importance for protected areas such as the Biebrza National Park. It is the biggest national park in Poland, which protects riparian wetland ecosystems, a unique ecosystem and the most extensive wetland system in Central and Western Europę. Interestingly enough, over 40% of its area is privately owned by cultivators. In the Lower Biebrza valley, they use their land for grazing cattle, or as grasslands and pastures. These areas are subject to annual flooding, which sometimes lasts up to 200 days. The floodplain is a nesting area for various birds, which very often build their nests on high and dry ground, thus their eggs are at risk of being destroyed by grazing cattle. During the period of flooding the pasture area becomes radically smaller and the dense cattle grazing poses a danger to these birds’ nests. To fulfill the conditions for sustainable agriculture, the size of pasture land on the flood-land of the Biebrza valley should be limited according to pasturage norms in force for areas of nature preservation.
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