Soil and Water Research, 2017 (vol. 12), issue 4
INDEX OF VOLUME 12 (2017)
editors
Soil & Water Res., 2017, 12(4):I-II | DOI: 10.17221/10146-SWR 
Use of terraces to reduce overland flow and soil erosion, comparison of the HEC-HMS model and the KINFIL model applicationOriginal Paper
Darya FEDOROVÁ, Hana BAČINOVÁ, Pavel KOVÁŘ
Soil & Water Res., 2017, 12(4):195-201 | DOI: 10.17221/160/2016-SWR
In our study, a system of seven natural terraces interspersed with six field belts situated at the Knínice locality (the Ore Mts., North-West Bohemia) was selected as the experimental catchment area. Overland flow was computed using two different methods: the kinematic wave method and the SCS dimensionless Unit hydrograph (UH). For the kinematic wave method calculations the KINFIL software was used; for SCS dimensionless hydrograph the HEC-HMS software was applied. The results compare hydrographs with N-year recurrence of rainfall-runoff time, where N = 10, 20, 50, and 100 years. The comparison provides hydraulic results with terraces and without terraces...
Spatial variability of soil potassium and its relationship to land use and parent materialOriginal Paper
Fevzi AKBAS, Hikmet GUNAL, Nurullah ACIR
Soil & Water Res., 2017, 12(4):202-211 | DOI: 10.17221/32/2016-SWR
Information on the spatial distribution of plant nutrients is a prerequisite to predict their behaviour and to monitor the fertility in a watershed. This study was conducted to evaluate variations of plant available potassium (PAK) and non-exchangeable potassium (NEK) of a watershed with different land use and parent materials. Eight hundred soil samples were taken from 0-30 and 30-60 cm depths across the Kazova watershed of 20 656 ha in size. Average PAK was 152.8 mg/K kg in surface layers and 167.2 mg/kg in subsurface layers. NEK was 925 mg K/kg in surface and 167.2 mg K/kg in subsurface layers. All forms of K were the lowest in soils formed over...
Methane production potential of soil profile in organic paddy fieldOriginal Paper
Mujiyo Mujiyo, Bambang Hendro Sunarminto, Eko Hanudin, Jaka Widada, Jauhari Syamsiyah
Soil & Water Res., 2017, 12(4):212-219 | DOI: 10.17221/58/2016-SWR
The use of organic fertilizers in the organic paddy/rice field can increase methane (CH4) production, which leads to environmental problems. In this study, we aimed to determine the CH4 production potential (CH4-PP) by a soil profile from samples using flood incubation. Soil properties (chemical, physical, and biological) were analyzed from soil samples of three different paddy farming systems (organic, semi-organic, and conventional), whilst soil from teak forest was used as the control. A significant relationship was determined between soil properties and CH4-PP. The average amount of CH4-PP...
Simulation study of anisotropic flow resistance of farmland vegetationOriginal Paper
Shengtang ZHANG, Yin LIU, Jingzhou ZHANG, Yuanchen LIU
Soil & Water Res., 2017, 12(4):220-228 | DOI: 10.17221/50/2016-SWR
Farmland vegetation is commonly cultivated with uniform planting spacing and heights. The effect of these features on resistance to hydraulic erosion is unclear. Hydraulic model experiments with the angle between the crop rows and the water flow direction set at 15°, 30°, 45° or 90° were conducted to analyze variation in the law of water flow resistance under partial or complete submergence of the crop. Cultivation can impact the flow resistance on slopes and this effect was greater when the crop was partially submerged. When planting spacing, slope, and water depth were constant, the change of the water flow Darcy-Weisbach resistance coefficient f...
Assessment of soil heavy metal pollution in a former mining area - before and after the end of mining activitiesOriginal Paper
Lenka Demková, Tomáš Jezný, Lenka Bobuľská
Soil & Water Res., 2017, 12(4):229-236 | DOI: 10.17221/107/2016-SWR
Toxicity and persistence of heavy metals, which are accumulated in the environment as the result of diverse industrial activities, represent serious environmental problem worldwide. The intense mineral extraction in mining areas has produced a large amount of waste material and tailings, which release toxic elements to the environment. The aim of the study was to determine in two time horizons (1997, 2015) the heavy metal contents of samples derived from ten sampling sites located in the former mining area of Central Spiš (Slovakia). In order to compare the level of contamination, the contamination factor (Cif), degree of contamination...
Comparative study on microbial community structure across orchard soil, cropland soil, and unused soilOriginal Paper
Cungang CHENG, Deying ZHAO, Deguo LV, Li SHUANG, Guodong DU
Soil & Water Res., 2017, 12(4):237-245 | DOI: 10.17221/177/2016-SWR
We examined the effects of three different soil conditions (orchard soil, cropland soil, unused soil) on the functional diversity of soil microbial communities. The results first showed that orchard and cropland land use significantly changed the distribution and diversity of soil microbes, particularly at surface soil layers. The richness index (S) and Shannon diversity index (H) of orchard soil microbes were significantly higher than the indices of the cropland and unused soil treatments in the 0-10 cm soil layer, while the S and H indices of cropland soil microbes were the highest in 10-20 cm soil layers. Additionally, the Simpson dominance index...
Effect of treated sewage effluents on plant cover and soil at Wadi Al Rummah, Qassim Region, Saudi ArabiaOriginal Paper
Gamal E.B. EL GHAZALI, Abdul Rahman A. AL-SOQEER, Wail E. ABDALLA
Soil & Water Res., 2017, 12(4):246-253 | DOI: 10.17221/230/2016-SWR
The effect of tertiary treated sewage effluents on the plant cover and the physico-chemical properties of the surface soil (environmental characteristics) before and after the Al Rass sewage plant was investigated. The data were illustrated via TWINSPAN and canonical correspondence analysis (CCA). Five sites, 1 km apart, after the discharge point and one site (control site) before the sewage plant were examined. Eleven vegetation characteristics and ten physico-chemical properties of surface soil were studied. The obtained results revealed that discharging of treated sewage effluents altered quantitatively and qualitatively the pattern of species dominance...