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Analysis and representation of uncertainty in digital soil maps in the Zyrzyn area (SE Poland)

100%

Dobers E. S.

Zeszyty Problemowe Postępów Nauk Rolniczych

2005

tom 507

nr 1

The transferable belief model (TBM) is used to combine the soil information from soil maps and remote sensing information from colour aerial photography in two steps, with respective assumptions about the uncertainty and reliability of data. At a first step, the soil type maps of different scales were analysed for mapping unit purity to derive a soil map with integrated uncertainty information (map₀). In the second step, belief values regarding soil type hypotheses were assigned to pixels derived from airphoto classification. The ’soil type - air photo dass’ combinations were determined according to results from tested area. This new map was combined with map₀ using TBM. Two scenarios for data reliability were studied. The resulting soil type map is depicting spatial variability visible on the airphoto, when data reliability was increased for remote sensing information. The additional values of maximum belief and weight of conflict from the TBM can be integrated into GIS as spatial uncertainty information.

Soil enzymatic activity in deteriorated forest ecosystems in the operation area of the Pulawy S.A. Nitrogen Factory

67%

Bielinska E. J., Domzal H.

Acta Agrophysica

2001

tom 51

The present research (1998-1999) was carried out to evaluate soil enzymatic activity in the deteriorated forest ecosystems within the operation range of the Puławy S.A. Nitrogen Factory. Investigation covered podzolic soils from strong and medium forest pollution zones. Objects from the Pulawy Forest Inspectoratejwere represented, i.e. samples from the Puławy district (Inspectorate Wronów) and Żyrzyn district (Inspectorate Zagórki). The obtained results indicate high degree of soil environment deterioration in the investigated forest habitats, in the form suppressed enzymatic activity and deformation of chemical properties. A significant increase in the enzymatic soil activity with the increasing distance from the nitrogen factory was observed. Changes in the activity of soil enzymes were related to the soil chemical properties.

Ograniczanie wyników

1 Acta Agrophysica

1 Zeszyty Problemowe Postępów Nauk Rolniczych

1 Bielinska E. J.

1 Dobers E. S.

1 Domzal H.

1 2005

1 2001

Wyniki wyszukiwania

Analysis and representation of uncertainty in digital soil maps in the Zyrzyn area (SE Poland)

Soil enzymatic activity in deteriorated forest ecosystems in the operation area of the Pulawy S.A. Nitrogen Factory