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In this paper changes in the manganese content in the sward and soil were presented on the basis of the experiment taking place in Czarny Potok near Krynica (20°54 E; 49°24 N), which was set up on natural mountain meadowland (Nardus stricta L. and Festuca rubra L. type) in 1968. The experiment conducted in series 0Ca and +Ca comprised 8 fertilized objects. The manganese content in the meadow sward depended on the cut, time, object and series. This content was usually lower in the 1st cut than in the 2nd and this difference grew less over the time of the experiment. After 35 years of the experiment, equalization of the manganese content in both cuts was observed. The amount of manganese taken up depended chiefly on doses conditioning the yield and acidification rather than on the nitrogen form. The highest yields were obtained between the 11th-17th years of the experiment. The average manganese uptake for these yields amounted to more than 4 kg Mn ha-1 for sward fertilized with 180 kg N ha-1 and around 3 kg Mn for sward fertilized with half the dose. Applied liming, which did not influence the yield, caused changes in the amount of manganese taken up. An examination of the manganese forms (total and mobile) in the soil confirmed the relation between the amount of manganese removed and sward yield and its lower content in the soil.
The study was focused on soil factors influencing species richness and diversity after disturbance of the substrate followed by abandonment. Two types of disturbances in the past were considered: the removal of trees and shrubs with the resulting major destruction of soils, and deep ploughing. As a control meadows not covered by any management schemes for 50 years were studied. The topsoil stripping resulted in decrease of potassium, nitrogen and organic carbon contents, while deep ploughing caused less radical effects. Simultaneously, disturbances of the soil delayed the course of succession, and brought increase in species. The most species-rich are ploughed meadows. No differences in terms of species diversity, domination and evenness between the forms of disturbances were identified. However, there were groups of species indicative for soil disturbances. Analysis of the relationships between vegetation differentiation and the properties of soil suggests that available phosphorus may affect species richness and diversity in mountain meadows.
The Wutai Mountain Meadow Reserve, located at 112°50’–113°50’E, 38°30’–39°15’N, conserves the typical highmountain meadows in North China. Eighty one plots (quadrates 2 m × 2 m ) in 11 transects separated by 100 meters in altitude along an elevation gradient (2 000–3 058 m a.s.l.) were established. Species composition of plants, their abundance, coverage and height in each plot were measured and recorded. The environmental variable like slope, slope orientation, soil type, air temperature and humidity (yearly average values) were assessed. The multivariate analysis methods, TWINSPAN for classification, and DCA and CCA for ordination, were used to analyze the relationships between meadow communities and environmental variables. The results showed that there are eight types of mountain meadow vegetation in the reserve. The distribution of meadow communities is related to elevation, slope, slope orientation, and soil-water conditions. The changes of species diversity (H’ = 1.5–2.5 ) in communities are mainly related to elevation gradient, and also related to community coverage, slope and slope orientation.
The grassland ecosystems generally, and the submontane meadow vegetationparticularly, are important components of the natural diversity of landscape. In the montane range (600–1000 m a.s.l.) (Beskidy Mts. Southern Poland) the richness (number of species) and the diversity (assessed with several indices) of meadow vegetation (permanent grassland and formerly arable land) were studies on 356 plots of 100 m² each using the method of Braun-Blanquet. The correlation with several topographic factors (altitude, inclination, exposure), as well as with soil chemical factors (pH, nutrient like P and other macroelements content) was elaborated and the Ellenberg’s indicator values in respect to moisture, acidity and fertility were calculated. It was found that the main factor diminishing species diversity was the increasing of altitude from 343 m to 963 m and soil acidification from 3.4 to 6.5. No significant difference was noted between the diversity indexes (Shannon-Wiener and Simpson) of three study communities. The soil fertility affected the number of species in the plant communities in the opposite way. In the case of communities of Molinio-Arhenatheretea class occurring on more fertile habitats, fertility increase caused a decline in the number of species, whereas in the communities from Nardo-Callunetea class developed on extremely poor habitats – the number of species was growing with increasing fertility
Doświadczenie zlokalizowane w Czarnym Potoku koło Krynicy na glebie brunatnej kwaśnej, założono w 1968 roku na naturalnej łące górskiej z przewagą Nardus stricta L. i Festuca rubra L. Doświadczenie obejmuje 8 obiektów nawozowych (w 2 seriach: 0 Ca i +Ca), w których stosowano jednostronne nawożenie azotem lub fosforem, a na tle PK azot w dwóch formach (saletra amonowa i mocznik) i dwóch dawkach (90 i 180 kg N·ha⁻¹). W latach 1985, 1995 i 2005 przeprowadzono wapnowanie. Oznaczenie zawartości azotu azotanowego wykonano metodą kolorymetryczną z kwasem difenylosulfonowym. W omawianym doświadczeniu zawartość azotu azotanowego we wszystkich obiektach nawozowych i w badanych okresach była znacząco poniżej wartości uważanej za szkodliwą. Zawartość azotu azotanowego w runi I pokosu nawożonej dawkami 60 i 120 kg N·ha⁻¹ + PK mieściła się w zakresie 0,442-0,699 g·ha⁻¹ suchej masy. Nawożenie PK lub NPK, niezależnie od dawki i formy azotu w nawozach, nie różnicowało istotnie zawartości azotu azotanowego w runi I pokosu. Ruń zdominowana przez kłosówkę miękką (niezależnie od formy azotu) w obiektach z 180 kg N·ha⁻¹ + PK miała podobną zawartość azotu azotanowego jak i ruń zróżnicowana botanicznie w obiekcie z 90 kg N·ha⁻¹ + PK. Wapnowanie powodowało zwiększenie zawartości azotu azotanowego w runi, szczególnie bez nawożenia oraz nawożonej wyłącznie azotem lub fosforem. Stwierdzono większy udział azotu azotanowego w azocie ogólnym spowodowany wapnowaniem wykonanym na 2 miesiące przed zbiorem I pokosu.
The paper discusses fluctuations, and their underlying causes, in the magnesium content of meadow sward from a fertilizer experiment set up on a mountain meadow in 1968. The fertilization experiment comprised 8 different treatments, with the following modifications: liming, magnesium and microelement fertilization and a change in the sward use made during the experiment so as to regenerate the sward and to improve the yielding potential. In the initial period, magnesium concentrations in the sward were assessed using the ASS technique after dry mineralization of samples and dissolution of the residue in diluted nitric acid. Later, the ICP technique was applied, including an internal reference sample for the methods. The cultivation measures caused variations in magnesium concentrations in the sward, depending on a number of factors, among which direct fertilization was not the most significant one. For example, the ambient temperature during the plant growing season strongly influenced the magnesium content, irrespectively of a cut. There was no effect of rainfall of the magnesium content, although atmospheric precipitation was able to raise considerably the charge of this element. In the second cut and under neutral soil pH, higher concentrations of magnesium were noted in the sward. This could have resulted from either the lower second swath yielding or the optimum conditions for the uptake of magnesium by the sward that occurred during its growth. The investigation results failed to provide an unambiguous answer to the question whether magnesium fertilization affected the concentrations of this element. Nonetheless, in order to maintain the production of valuable fodder it is essential to return systematically the elements taken up with plant yield to the soil. In intensively managed meadows, amounts of magnesium removed from the soil with the harvested biomass can be as high as several kilograms per hectare.
Specific, humid climate of mountain areas has a great influence on the properties of soils and vegetation, as well as on the mutual relations between these inseparable elements of ecosystems. Research on the interdependence between soils and natural vegetation was carried out on ' the mountain meadows of the Bieszczady National Park. In conditions of the cooler and more humid mountain climate the peculiar character of the soils lies in the presence of organic surface horizon of properties varying considerably from the properties of deeper mineral horizons. This horizon is of great importance in the protection of scarce elements. It prevents pollutants from reaching the ecosystem. It influences the soil water economy. It prevents erosion. This buffer element of the mountain soils requires special protection - in the Bieszczady Mountains the erosion of the mountain meadow soils is only noticeable where the covering vegetation and the organic surface soil horizon were destroyed, e.g. on tourist tracks. The plants of the Bieszczady mountain meadows, together with their direct product - the organic surface soil horizon, prevents the chemical erosion of the mountain meadows, reducing the leaching of many biogenous elements, e.g. calcium.
The present experiment studied effects of systematic, differentiated mineral fertilisation and liming on the amount of N-NO3-, K, Mg, Ca, Na ions lost from the 0-40 cm soil layer during meadow sward vegetation period as a result of leaching. The highest amount of filtrate was observed in the control object for both series, i.e. without liming and with liming. During vegetation, the level of filtrate amounted to, respectively, 224 and 213 mm on the average. The lowest pH of the lysimetric water was found in the objects fertilised with double doses of nitrate and urea. Calcium was leached from the soil to the highest degree, i.e. from 38.4 mg/lysimeter in the object unilaterally fertilised with phosphorus (the series with liming) to 231.6 mg/lysimeter on the object fertilised with 180 kg N in the form of ammonium nitrate (the series without liming). Leaching of potassium depended on the applied fertilisation with this element. The lowest loss of magnesium was found in the object unilaterally fertilised with phosphorus; respectively 12.5 mg Mg/lysimeter for the series without liming and 14.1 mg Mg/lysimeter for the series with liming.
In this paper the following problems are presented: changes of phosphorus content in the sward shaped by long-term, differentiated fertilization (1968-1992), quantities and rates of phosphorus uptaking with yield, utilization of phosphorus from the fertilizer and changes in fodder quality resulting from ratio of phosphorus to other macroelements. Systematic fertilization with P increases soil abidance in this element and as a consequence of this causes an increase of P in the sward. The effect of liming on P content in the meadow- sward and in the soil was not observed. Utilization of P from the fertilizer by the meadow sward during the period of 25 years depends mainly oil crop yields and with NPK fertilization amounts from 46% for 90 kg N/ha to 60% for 180 kg N/ha. The decrease in food value of mountain sward stated by ratio of P to other elements was confirmed during 25 years of the experiment. The highest changes of P content in soil were observed in the first years of the experiment.
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