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The impact of urban sprawl on the environment.
Havel, Petr ; Chuman, Tomáš (advisor) ; Romportl, Dušan (referee)
The suburbanization process - a shift of population and activities from city centre to its fringe - is not only a socioeconomical phenomenon; city spatial expansion is a serious concern for an environment as well. The volume of suburban and sprawling areas is constantly increasing, moreover the character of this development is inefficient both spatially and energetically. A crucial changes take place in a landscape, which is being fragmented and homogenized. Those changes affect organisms, which live in the landscape; their natural environment is intensively modified and not all of them are able to get used to a newly created conditions and resist to a pressure of invasive species. A lot of compacted and impervious surfaces negatively influence not only the biota, but also a water quality, infiltration and water regime. Last but not least, new development seals a lot of quality agricultural land. Sealed soils are irreversibly deteriorated and become useless for further agricultural use. Despite the fact, that legislative in the Czech Republic should protect the high-quality agricultural soils, the study, made in the surroundings of D1 highway shows that's not the case. Two thirds of the commercial suburban development take place on the most productive and valuable soils. This number suggests poor...
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Impact of urbanization on streams habitat quality
Stádníková, Monika ; Matoušková, Milada (advisor) ; Králová, Magdalena (referee)
Increased impervious cover associated with urbanization alters the natural cycling of water. Changes in the shape and size of urban streams, followed by decreased water quality, are the most visible effects of increased imperviousness. Greater frequency and severity of flooding, channel erosion and destruction of aquatic habitat commonly follow watershed urbanization. Alterations in the aquatic environment associated with these hydrological changes greatly compromise the normal functioning of waterways.
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Impact of urbanization on streams habitat quality
Stádníková, Monika ; Matoušková, Milada (advisor) ; Králová, Magdalena (referee)
Increased impervious cover associated with urbanization alters the natural cycling of water. Changes in the shape and size of urban streams, followed by decreased water quality, are the most visible effects of increased imperviousness. Greater frequency and severity of flooding, channel erosion and destruction of aquatic habitat commonly follow watershed urbanization. Alterations in the aquatic environment associated with these hydrological changes greatly compromise the normal functioning of waterways.
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Ecological consequences connected with sealing of soils in Prague periphery influenced by higway D1
Polická, Petra ; Šefrna, Luděk (advisor) ; Bláhová, Štěpánka (referee)
Sealing of soils in the city fringe is currently reaching a range, which we have never seen in the past. Cities are spreading, commercial development along important highways is rising and hectares of the fertile soils are diseppearing under the tons of concrete, asphalt and other artificial surfaces. The negative consequences of the loss of this important nature resource on the environment and lanscape balance are obvious. Impervious surfaces are the main reason of the run off changes, of the changes in the matter exchange between ekosystems and of the loss of a lot of important soil functions. The landscape is being homogenized and its fragmentation is rising. This work warns against irresponsible sealing of fertile agricultural soils surroundings the highway D1 in the periphery of Prague. Two thirds of sealed soils belong to the first classes of soil protection (luvisols), which can be built up only exceptionally. Contemporary legislative in the Czech Republic is visibly poor and it is necessary to accept more efficient control instruments. Keywords: Suburbanization, Sealing of soils, Impervious surfaces, Soil functions
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The impact of urban sprawl on the environment.
Havel, Petr ; Romportl, Dušan (referee) ; Chuman, Tomáš (advisor)
The suburbanization process - a shift of population and activities from city centre to its fringe - is not only a socioeconomical phenomenon; city spatial expansion is a serious concern for an environment as well. The volume of suburban and sprawling areas is constantly increasing, moreover the character of this development is inefficient both spatially and energetically. A crucial changes take place in a landscape, which is being fragmented and homogenized. Those changes affect organisms, which live in the landscape; their natural environment is intensively modified and not all of them are able to get used to a newly created conditions and resist to a pressure of invasive species. A lot of compacted and impervious surfaces negatively influence not only the biota, but also a water quality, infiltration and water regime. Last but not least, new development seals a lot of quality agricultural land. Sealed soils are irreversibly deteriorated and become useless for further agricultural use. Despite the fact, that legislative in the Czech Republic should protect the high-quality agricultural soils, the study, made in the surroundings of D1 highway shows that's not the case. Two thirds of the commercial suburban development take place on the most productive and valuable soils. This number suggests poor...
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