Soil and Water Research, 2012 (vol. 7), issue 1

Differentiation and regionalization of rainfall erosivity factor values in the Czech RepublicOriginal Paper

Miloslav JANEČEK, Vít KVĚTOŇ, Eliška KUBÁTOVÁ, Dominika KOBZOVÁ

Soil & Water Res., 2012, 7(1):1-9 | DOI: 10.17221/2/2011-SWR  

The rain erosivity R-factor is one of the main parameters in the Universal Soil Loss Equation (USLE). This paper describes the procedure used to update, differentiate and regionalize the rainfall erosivity R-factor. For the Czech Republic it is recommended to use the average value R = 40.

Impacts of land use changes on soil erosion in Pa Deng sub-district, adjacent area of Kaeng Krachan National Park, ThailandOriginal Paper

Saowanee WIJITKOSUM

Soil & Water Res., 2012, 7(1):10-17 | DOI: 10.17221/32/2011-SWR  

Soil erosion has been considered as the primary cause of soil degradation since soil erosion leads to the loss of topsoil and soil organic matters which are essential for the growing of plants. Land use, which relates to land cover, is one of the influential factors that affect soil erosion. In this study, impacts of land use changes on soil erosion in Pa Deng sub-district, adjacent area of Kaeng Krachan National Park, Thailand, were investigated by applying remote sensing technique, geographical information system (GIS) and the Universal Soil Loss Equation (USLE). The study results revealed that land use changes in terms of area size and pattern influenced...

Environmental impact of landfill on groundwater quality and agricultural soils in NigeriaOriginal Paper

Christopher Oluwakunmi AKINBILE

Soil & Water Res., 2012, 7(1):18-26 | DOI: 10.17221/4/2011-SWR  

Physical, chemical and bacteriological analyses were carried out of water samples from three boreholes located near a landfill, and or soil samples at Akure, Nigeria, to ascertain the effect of the dumpsite on the groundwater and soil quality. The samples from borehole locations with radial distances of 50, 80, and 100 m, respectively, away from the landfill and twelve soil samples collected at distances 0 (dump centre), 10, 20, and 30 m away from the refuse dump were analysed. The parameters determined were the turbidity, temperature, pH, dissolved oxygen (DO), total dissolved solids (TDS), total hardness (TH), total iron, nitrate, nitrite, chloride,...

Stream water quality associated with a livestock/poultry production operation in Southeastern Manitoba, CanadaOriginal Paper

E. Pip, A. Reinisch

Soil & Water Res., 2012, 7(1):27-35 | DOI: 10.17221/18/2011-SWR  

Water quality was examined in two parallel streams in southeastern Manitoba that enclosed a small hog and poultry operation with associated waste lagoons and manure spread fields. Nitrate-N (NN), molybdenum reactive phosphorus (MRP), dissolved organic matter index (DOMI), chloride, total alkalinity, total dissolved solids (TDS), total suspended solids (TSS), pH, temperature, and total (TC) and fecal (FC) coliform bacterial counts were measured at weekly intervals during the ice-free season at two upstream and two downstream sites relative to the operation. Significantly higher values downstream compared to upstream were observed for MRP, TSS, TDS,...

Simulation of water and salts dynamics in Bouhajla (Central Tunisia): exceptional rainfall effectOriginal Paper

Sabri KANZARI, Mohamed HACHICHA, Rachida BOUHLILA, Jorge BATTLE-SALES

Soil & Water Res., 2012, 7(1):36-44 | DOI: 10.17221/17/2011-SWR  

Arid and semi-arid regions face the risk of soils and aquifers salinization. Rainy events are rare which is characteristic of these regions. They play a significant role in the leaching of salts from topsoil to deeper layers, which increases the risk of aquifers salinization. For this reason, a plot was selected in the semi-arid region of Bou Hajla (Central Tunisia). The simulation of water and salts dynamics was carried out by Hydrus-1D. Model calibration was realised on a flood irrigation experiment during 10 days and in a depth of 4 m. The hydrodynamic parameters were determined by inverse modelling. Model validation was performed successfully during...