|
|
The ability of plants to indicate abiotic environmental conditions
Lebedová, Michaela ; Chuman, Tomáš (advisor) ; Šefrna, Luděk (referee)
The occurrence of different plant species is influenced mainly by individual environmental factors such as light, heat, soil reaction or nutrient content. The knowledge of the relationships between the plant species and the mentioned ecological factors, allows us to estimate the ecological properties of the habitats in which these species grow without the need of direct measurements. The aim of this thesis was to review the literature on the ability of different plants to indicate abiotic environmental conditions and to verify it on selected soil properties (soil nitrogen and phosphorus content, soil reaction) at sites where both soil sampling and analysis and phytocenological relevés were collected. Tabulated Ellenberg's indicator values were assigned to recorded species from 14 catchments of the GEOMON network. The tightness of the relationship between the indicator values and the measured data was examined in several soil layers defined as: L, FH, 0-10, 10-20, 20-40 a 40-80 cm and phytocenological relevés of different size: A - 400 m2 , B - 40 m2 a C - 4 m2 . The results showed that the data correlated best in the soil layer FH and the strongest relationship was found between the average Ellenberg's indicator values from phytocenological catchments C with an active soil reaction. Keywords:...
|
guest ::
