SCHRIFTENREIHE Institut für Pflanzenernährung und Bodenkunde ...

II List of figures
Fig. 2.1. Location of geostatistical areas in the five plots. UG 79: ungrazed since
1979, UG 99: ungrazed since 1999, WG: winter grazed, CG: continuous grazed,
and HG: heavily grazed. Each plot has an area of 105 m×135 m. Sampling
points are spaced every 15 m with a subgrid spacing of 5 m (the orthogonal
boxes with dash line in WG and CG). Two larger geostatistical grids in WG and
CG have an area of 300 m×550 m with a sampling points spacing of 50 m and a
subgrid spacing of 10 m. 15
Fig. 2.2. Semivariograms of (a) SWC, (b) Ln(K), (c) Ln(WDPT), (d) SS, (e) SOC,
(f) BD, (g) sand content (%), and (h) silt content (%) in UG 79. K: hydraulic
conductivity (cm d -1 ); WDPT: water drop penetration time (s); SS: shear strength
(kPa); SWC: soil water content (cm 3 cm -3 ); SOC: soil organic carbon (g kg -1 ); BD:
bulk density (g cm -3 ). 26
Fig. 2.3. Ordinary kriged maps of (a) SWC, (b) Ln(K), (c) Ln(WDPT), (d) SS, (e)
SOC, (f) BD, (g) sand content (%), and (h) silt content (%) in UG 79. K: hydraulic
conductivity (cm d -1 ); WDPT: water drop penetration time (s); SS: shear strength
(kPa); SWC: soil water content (cm 3 cm -3 ); SOC: soil organic carbon (g kg -1 ); BD:
bulk density (g cm -3 ). 27
Fig. 2.4. Scattergram plots and regression analysis for selected soil properties in
UG 79 and HG between Ln(WDPT) and Ln(K) (a); Ln(K) and BD (b); Ln(WDPT)
and SOC (c); and SS and BD (d). K: hydraulic conductivity (cm d -1 ); WDPT:
water drop penetration time (s); SS: shear strength (kPa); SOC: soil organic
carbon (g kg -1 ); BD: bulk density (g cm -3 ). 28
Fig. 3.1. Location of the sampling plots delineated as:UG 79: ungrazed since
1979, UG 99: ungrazed since 1999, WG: winter grazed, CG: continuous grazed,
and HG: heavily grazed. Each plot has an area of 105 m×135 m. Sampling
points were spaced at 15 m with a subgrid spacing of 5 m (the orthogonal boxes
with dash line in WG and CG). Two larger geostatistical grids in WG and CG had
an area of 300 m×550 m with a grid spacing of 50 m and a subgrid spacing of 10
m. 43
Fig. 3.2. Time series of (a) mean soil moisture content, (b) soil moisture variance
and (c) soil moisture range for five plots during the sampling period 2004-2006.
48
Fig. 3.3. Correlations of variance to mean soil moisture content for five plots.
51
Fig. 3.4. Semiariograms and cross-semivariograms maps of soil variables and
models for the linear Model of Coregionalization exemplified by UG 99. SOC:
xi