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Field Measurements of Air and Water Pressures in a Heterogeneous Forest-Reclaimed Lignitic Mine Soil

^a Dep. of Preventive Soil Protection and Soil Monitoring, Bavarian Environment Agency, Hans-Högn Strasse 12, 95030 Hof, Germany
^b Institute of Soil Landscape Research, Leibniz-Centre for Agricultural Landscape Research (ZALF), Eberswalder Strasse 84, 15374 Müncheberg, Germany

View larger version (39K): [in this window] [in a new window]   FIG. 1. Scheme of investigated mine soil cross-section indicating the positions of horizontally installed measurement devices and pressure probes. For a detailed description of the cell lysimeter, refer to Hangen et al. (2005).

View larger version (17K): [in this window] [in a new window]   FIG. 2. (A) Atmospheric pressure and (B) precipitation during the period of investigation.

View larger version (15K): [in this window] [in a new window]   FIG. 3. Soil temperatures at (A) 70 cm and (B) 90 cm soil depth for all nine measurement positions (see Fig. 1). Soil temperature at position 7 in 90 cm soil depth was not recorded because of transmission problems.

View larger version (21K): [in this window] [in a new window]   FIG. 4. Soil water pressures at (A) 70 cm and (C) 90 cm soil depth and (B) differential soil air pressure at 80 cm soil depth for all nine measurement positions (see Fig. 1). Soil water pressure at position 8 in 90 cm soil depth was below the minimum measurement threshold of –800 hPa and therefore is not depicted here.

View larger version (10K): [in this window] [in a new window]   FIG. 5. Differential soil air pressure after temperature compensation at measurement positions 2 and 5.

View larger version (21K): [in this window] [in a new window]   FIG. 6. Soil water pressures (p) at 70 and 90 cm and temperature-compensated differ- ential soil air pressure (pat) at 80 cm for (A) measurement position 2 and (B) position 5 (see Fig. 1).

View larger version (11K): [in this window] [in a new window]   FIG. 7. Oxygen content in soil air at 70 and 90 cm soil depth at left- and right-hand side of investigated mine soil block (see Fig. 1).