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Publication Date
1977
Description
Concentration and ratio of mineral nutrients, dynamics of mineral nutrient uptake per 1 m2, and the contents of mineral nutrients in permanent biomass reserve and in maximum biomass were assessed in three selected types of meadow ecosystems representing a natural hydrological series in a given area (dry, moist, wet). The assessment was based on chemical analyses (N, P, K, Na, Ca, Mg) and production analysis of above-ground and underground parts of defined vegetation.
Total above-ground biomass produced per year was estimated (from the dry type to the wet one) at 706, 1070, 2430 g • W • m-2, respectively; total underground biomass was established at 389, 407, 880 g • W · m- 2, respectively. This implies similar differences in the nutrient content. The amount of N utilized by above-ground biomass amounts to 15, 25, 20 g • m-2, respectively, and by·underground biomass 3, 4, 11 g • m - 2 per year.
The amount of nitrogen needed for protein formation is, to some degree, acquired through the ability of stands with rich species diversity to fix atmospheric nitrogen; most of it, however, comes from soil washed away from fields and coming to the area in flood water.
Citation
Jakrlova, Jana, "Mineral composition of vegetation related to primary production in alluvial meadow ecosystems" (1977). IGC Proceedings (1977-2023). 4.
(URL: https://uknowledge.uky.edu/igc/1977/sess3/4)
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Mineral composition of vegetation related to primary production in alluvial meadow ecosystems
Concentration and ratio of mineral nutrients, dynamics of mineral nutrient uptake per 1 m2, and the contents of mineral nutrients in permanent biomass reserve and in maximum biomass were assessed in three selected types of meadow ecosystems representing a natural hydrological series in a given area (dry, moist, wet). The assessment was based on chemical analyses (N, P, K, Na, Ca, Mg) and production analysis of above-ground and underground parts of defined vegetation.
Total above-ground biomass produced per year was estimated (from the dry type to the wet one) at 706, 1070, 2430 g • W • m-2, respectively; total underground biomass was established at 389, 407, 880 g • W · m- 2, respectively. This implies similar differences in the nutrient content. The amount of N utilized by above-ground biomass amounts to 15, 25, 20 g • m-2, respectively, and by·underground biomass 3, 4, 11 g • m - 2 per year.
The amount of nitrogen needed for protein formation is, to some degree, acquired through the ability of stands with rich species diversity to fix atmospheric nitrogen; most of it, however, comes from soil washed away from fields and coming to the area in flood water.
