Moisture, Water Holding, Drying and Wetting in Forest Soils

Pavel Blažka, Zofia Fischer

Department of Applied Ecology, John Paul II, Catholic University of Lublin, Lublin, Poland.
Faculty of Science, University of South Bohemia, ?eské Budějovice, Czech;Present Address: Ulrychova 23, 162 00 Praha 6, Czech.

DOI: 10.4236/ojss.2014.45021                

Abstract

Relationship of soil and water is generally considered as important in soil science. To specify it further we studied two different soils in 2012-2013, three additional soils once and made several series of experiments with drying and wetting of the soils. Principal parameters studied were the gravimetric water content (GWC), water holding capacity (WHC), soil organic matter (SOM), their correlations and rates of change in drying or wetting. The three parameters are significantly inter-correlated. Distribution of GWC in the replicates of soils dried both in nature and in experiments was narrower than that in wet soils, while WHC changed less in drying. The correlations (GWC- WHC) became steeper (the slope coefficient higher) and the coefficient of determination (R²) lower. Attempts to increase WHC in wet soils with a high WHC even further were not successful. Drying may be fast or slow; rates of increase of WHC in wetting were all low, both in field and in the experiments, less than 0.1 g (H2O) g^-1 (soil)·day^-1. None of the three parameters can be considered as fixed characteristics of forest soils.

Keywords

Soil-Water Relationships, Climate Change, Water Holding Capacity

Conflicts of Interest

The authors declare no conflicts of interest.

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