Home > Search Results: Vácha, Aleš
Search:
Search Tips :: Advanced Search
Search collections:
Sort by: Display results: Output format:
National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Long-term trends in water chemistry and matter flows of three watersheds due to their management.
 VÁCHA, Aleš
The diploma thesis is based on long-term monitoring of small watersheds in the Šumava region, differences and trends in the water chemistry in the years 1998 - 2015 and the differences in water balance and erosion of solutes in the years 2008 2015 are evaluated. Comparing average rainfall-runoff relationship on the catchments revealed little difference between the basins of the Horský (wetland) stream (runs off 37 %) and Bukový (forest) stream (32 %), while the basin of Mlýnský (drained pasture) creek runs off 60 % of incident precipitation. Basin of drained pastures Mlýnský - showed worsening of the parameters, which are expressed in lower proportion of water retained in the basin and also a higher proportion of dissolved solids in the effluent water. This corresponds to the overall erosion of substances from the basin, which is evident from the results, both forest and wetland basin matters detained while the drained basin is losing them for a long time. Only in the case of nitrate, ammonia, Ca2+ and Mg2+ loads from the forest and wetland basin are three times lower than the load from the drained pastures. For PO43- it is about one third less and in the case of SO42-, Cl-, K+ and Na+ it is about one half less.
Detailed record
The comparison of water and matter flows in small catchments in the Šumava Mountains depending on landscape management.
 VÁCHA, Aleš
The present thesis deals with the comparison of water flow and quality of water flowing from small watersheds under different farming methods on the right bank of Lipno in the Bohemian Forest. Watersheds are comparable to its size, exposure, altitude, climatic conditions and differ in land use and management. Solution in bachelor thesis contributed to more accurate flow measurement and analysis of data from 2008 to 2013. The evaluated results show that the drained basin used as pasture (Mlýnský) has drained in average of 70 %, the runoff in the watershed covered with forest, wetlands and meadows (Horský) is 39 % and the runoff from watershed covered with forest (Bukový) is 33 % of water, that the basin falls in precipitation. During the period the average annual water flow rates were 43.1 l.s-1 with a maximum of 662.9 l.s-1 on Mlýnský creek (2 June 2013), 28.6 l.s-1 with a maximum of 451.2 l.s-1 on Horský creek (2 June 2013) and 24.5 l.s-1 with a maximum of 220.0 l.s-1on Bukový creek (2 June 2013). The greatest variation values were recorded in the catchment area of the Mlýnský creek. The results show a direct correlation between the values of runoff and the amount of dissolved solids expressed through the electrical conductivity of the water. The average value of conductivity is 84 ?S.cm-1 in Mlýnský creek, 43 ?S.cm-1 in Horský creek and 39 ?S.cm-1 in Bukový creek. The solution in bachelor thesis confirmed that land use is an important factor in the watershed water balance and also in the quality of the effluent.
Detailed record

See also: similar author names
2 VÁCHA, Aleš
1 Vácha, Adam
2 Vácha, Antonín
3 Vácha, Áron
Interested in being notified about new results for this query?
Subscribe to the RSS feed.
Digital Repository :: Search :: Submit :: Personalize :: Help
Powered by Invenio v1.1.2
Maintained by admin.invenio@techlib.cz
This site is also available in the following languages:
Česky  English