Soil moisture index (BFI_10_w2: 10 m raster data)
Description
The modified soil moisture index (BFi) is a measure of the relief-related, potential moisture conditions of the soil. It is calculated on the one hand from the complex relief parameter catchment area size, i.e. the amount of water potentially available through runoff, and on the other hand from the local relief parameter slope. The inclination controls the flow velocity and thus the residence time of the draining water. Further details on the method (without modification) can be found at BÖHNER & KÖTHE (2003). The modified soil moisture index is a powerful relief parameter. Among other things, it is possible that broad valley soils have a uniformly high soil moisture index and not, as with MOORE et al. (1993) high indices remain concentrated only on the narrow drainage lines in the valley bottoms (cf. BÖHNER & KÖTHE 2003).
The modification of the soil moisture index consists primarily in the weighting of the slope slope. The weighting factor used is 2 (default is 1). The relatively high weighting factor 2 leads to the fact that the soil moisture index in the mountains is quite undifferentiated and the end moraines of the geest already have similarly low values as the mountains. However, all very flat inclined areas are strongly differentiated. Since Lower Saxony predominantly has a shallowly inclined relief and since the soil-relief relationship is generally stronger in sites close to groundwater, a high weighting factor was chosen.
BÖHNER, J. & KÖTHE, R. (2003): Soil regionalisation and process modelling: Instruments for soil protection. – Peterm. Geogr. Mitt., 147, 2003/3: 72-82; Gotha.
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https://nibis.lbeg.de/net3/public/ogc.ashx?NodeId=1227&Service=WMS&Request=GetCapabilities& |
Tags
- sgd_boden
- opendata
- inspireidentifiziert
- nibis-metadaten