Polder Effects on Sediment-to-Soil Conversion: Water Table, Residual Available Water Capacity, and Salt Stress Interdependence
Figure 21
(a) Schematic evolution of the CE1/5 profiles induced by the water table descending. Grey arrow = water table trend; double vertical black arrows = water table fluctuation between the high water table level (H.W.T.) and the low water table (l.W.T.). 1 to 2 indicate the transition from the mesophile to hygrophile systems. (b) Parallel evolutions of the RU profiles and salinity profiles characteristic of the three studied systems. Straight black line = initial (textural) cumulative RU profiles. 1, 2, and 3 residual cumulative RUr profiles calculated after the plant growing under the grassland and under the cultivated field (example of wheat). Trend 1 = grassland; trend 2 = cultivated area nearby the limestone hill, thus impacted by the fresh water inlet; trend 3 = cultivated area far from the limestone hill.
