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Defunct small water reservoirs in the Ploučnice River basin
Purm, Marek ; Kocum, Jan (advisor) ; Doležal, Tomáš (referee)
The purpose of this bachelor thesis is to provide an understanding of the soil water retention, particularly focusing on small water reservoirs and their water retention potential within the region. Additionally, this paper uses available historical maps to investigates a historical development of water reservoirs in the river Ploucnice basin. The research first provides systematic review of a secondary research, based on Czech and foreign resources, focusing on the topics and issues mentioned above. This chapter includes investigation of physio-geographic properties of the river Ploucnice basin, particularly focusing on hydrological analysis of this area, using research data from Czech Hydrometeorological Institute. The primary research focused on a historical development of water reservoirs in the area of selected basin. Key words: soil water retention, small water reservoir, digital elevation model, climate change, Ploučnice river, Robečský brook
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Hydrologic extremes and gross primary productivity in the Liz catchment
Šír, Miloslav ; Tesař, Miroslav ; Lichner, Ľ. ; Váchala, J. ; Krejča, M.
The synergy between hydrologic extremes, plant transpiration, gross primary productivity, and soil water retention was studied in the experimental area Zábrod – meadow in the Bohemian Forest. Heat balance, potential and actual transpiration, entropy production and gross primary productivity were evaluated. It was found that the soil water retention is the crucial factor determining hydrologic pattern and gross primary productivity. Insufficient soil water retention leads to small entropy production by evaporation and small gross primary productivity, which results in the extremalization of the hydrologic cycle. On the other hand, in the case of sufficient soil water retention, high entropy production by transpiration and high gross primary productivity leads to the stability of the hydrologic cycle.
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