Abstract:The effect of erosion and erosion control measures on changes in the amount of organic matter in soil was studied. We investigated the influence of organic matter inputs into the soil on surface runoff, soil erosion and soil erodibility (K-factor), including the monitoring of carbon dynamics, as a result of torrential rains. The research was conducted on experimental plots in Třebsín site. Erosion leads to soil carbon loss and subsequently to increasing concentrations of carbon in sediments (enrichment ratio). We can conclude from the results that the input of organic matter into the soil (especially farmyard manure) significantly contributes to a decrease in surface runoff and soil loss and also to a reduction of carbon leaching into sediments; so it contributes to carbon sequestration into the soil.
Kadlec V., Žížala D., Novotný I., Heřmanovská D., Kapička J., Tippl M.: Land consolidations as an effective instrument in soil conservation. Ekológia (Bratislava), Vol. 33, No. 2, p. 188-200, 2014.In the Czech Republic, more than 50% of agricultural land is threatened by water erosion, which is tremendously increasing during last couple of years. Therefore, it is necessary to deal with soil conservation as soon as possible. Land consolidations (LCs) are thus an important tool for implementation of soil, water and landscape conservation measures. It is possible to arrange land ownerships by them. They also arrange land spatially and functionally, provide availability of parcels and their land use in public interest. Besides that, environmental improvement, soil conservation, water management and increase in landscape ecological stability supplement the use of LCs. The results of soil consolidations serve for renewal of cadastral records and for the backgrounds for landscape planning. The aim of the research was to evaluate the selected site (district Plzeň - South) with regard to the amounts and limits of proposed and implemented measures in LC process. The research was processed on the basis of detailed analysis regarding erosion risk and runoff conditions in GIS compared with the previous data (before LC).
Abstract:The paper reports on the flood events on the forested Hukava catchment. It describes practical implementation of the KINFIL rainfall-runoff model. This model has been used for the reconstruction of the rainfallrunoff events and thus for the calibration of its parameters. The model was subsequently used to simulate the design discharges with an event duration of t d = 30, 60, and 300 min in the period of recurrence of 100 years, and during the scenario simulations of the land use change when 40% and 80% of the forest in the catchment had been cleared out and then replaced by permanent grasslands. The implementation of the KINFIL model supported by GIS proved to be a proper method for the flood runoff assessment on small catchments, during which different scenarios of the land use changes were tested.
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