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Wyszukujesz frazę ": soil quality" wg kryterium: Temat

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Usability of enzyme activity in estimation of forest soil quality
    Autorzy:
    Blonska, E.
    Januszek, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/38481.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    usability
    enzyme activity
    estimation
    forest soil
    soil quality
    soil enzyme
    site index
    Opis:
    Taking into account the progressive degradation of soils it is important to assess their quality. Soil quality depends on a large number of physical, chemical, biological and biochemical properties. In the publications available, there are presented three approaches regarding the use of soil properties to estimate soil quality: (1) the use of individual properties, (2) the use of simple indexes and (3) the use of complex indexes derived from combinations of different properties. The purpose of this study was to investigate the possibility to use enzymes as indicators of forest soil quality. Experimental plots (43) were located in central Poland. The study was carried out in a number of diverse fresh forest sites. To assess the quality of forest soils dehydrogenase and urease activity and the degree of base saturation were used. One of the final conclusions point out that enzymatic activity indicates current site condition as well as the changes that occur in soil better than soil physical and chemical properties. In other words, in comparison to soil enzymatic activity, soil physico-chemical properties constitute a less sensitive indicator of soil changes.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2013, 55, 1
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biological and biochemical properties in evaluation of forest soil quality
    Autorzy:
    Blonska, E.
    Lasota, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/38711.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    biological property
    biochemical property
    forest soil
    soil quality
    earthworm
    enzyme activity
    Opis:
    The aim of this study was to assess the possibility of using biological and biochemical parameters in the evaluation of forest soil quality and changes caused by land use. The study attempted to determine a relationship between the enzymatic activity of soil, the number of earthworms and soil physico-chemical properties. The study was carried out in central Poland in adjoining Forest Districts (Przedbórz and Smardzewice). In soil samples taken from 12 research plots, basic physico-chemical properties, enzyme activity (dehydrogenase, urease) and density and biomass of earthworms were examined. Enzyme activity showed a large diversity within the forest site types studied. The correlations between the activity of the enzymes studied and C/N ratio indicated considerable importance of these enzymes in metabolism of essential elements of organic matter of forest soils. Urease and dehydrogenase activity and earthworm number showed susceptibility to soil pH, which confirmed relationships between enzyme activity and abundance of earthworms and soil pH in H2O and KCl.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2014, 56, 1
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prospects of cultivation of Jack pine (Pinus banksiana Lamb.) on sandy soils of natural-technogenic origin in Kyiv Polissia
    Autorzy:
    Brovko, F.
    Yukhnovskyi, V.
    Brovko, D.
    Brovko, O.
    Minder, V.
    Urliuk, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/2106648.pdf
    Data publikacji:
    2022
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    Kyiv Polissia
    Jack pine
    Pinus banksiana
    biometric indicator
    sandy soil
    seed production
    soil occupancy by roots
    seed quality
    quality indicator
    Opis:
    The aim of the research was to identify the influence of environmental factors inherent in the alluvial and displaced sands of the study region on the growth of the Jack pine and the prospects for its cultivation. We found that the success of growth of Jack pine seedlings on sandy soils depends on a set of factors, which include the presence or absence, in the rhizosphere of sand, of humus impurities and genetic horizons of zonal soils, silty or loamy layers, soil density and composition of pine stands formed in the cultivation. On alluvial sands, sparse forests of Jack pine and Scots pine with a density of 0.3 units were formed. The yield of seeds from Jack pine cones was 1–2% higher than the normative values, and the mass of 1000 seeds was 50% higher. Jack pine seedlings grow according to I class of productivity on displaced sands, with an admixture of humus mass and remnants of genetic horizons of zonal soils at the root depth. In the rhizosphere of the stand, the roots of Jack pine seedlings occupied 78% of the mass of all roots that inhabited a metre-thick sand. Jack pine seedlings that fall under the canopy of Scots pine fall out of the plantations due to drying, which indicates their demand for light and appropriateness of growing Jack pine in solitary plantings or in mixed low-density plantations with Scots pine.
    Źródło:
    Folia Forestalia Polonica. Series A . Forestry; 2022, 64, 2; 90-99
    0071-6677
    Pojawia się w:
    Folia Forestalia Polonica. Series A . Forestry
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ siarczanu glinu na wybrane właściwości gleby oraz na wydajność i jakość sadzonek sosny zwyczajnej w leśnej szkółce gruntowej
    Impact of aluminium sulphate fertilizer on selected soil properties and the efficiency and quality of pine seedlings in the forest ground tree nursery
    Autorzy:
    Januszek, K.
    Stępniewska, H.
    Błońska, E.
    Molicka, J.
    Kozieł, K.
    Gdula, A.
    Wojś, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1317650.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    szkolki lesne
    gleby
    odczyn gleby
    siarczan glinu
    wlasciwosci fizykochemiczne
    aktywnosc enzymatyczna
    fosfataza kwasna
    wschody
    sadzonki
    drzewa lesne
    sosna zwyczajna
    Pinus sylvestris
    mikoryza
    ektomikoryza
    soil pH
    aluminium sulphate
    pine seedlings quality
    ectomycorrhizae
    damping-off
    Opis:
    The alkalization of soil is a common phenomenon in forest ground nurseries. Liming, inadequate fertilization and the use of hard water for irrigation are the main reasons for this alkalization. The aim of this study was to investigate the effect of fertilization with aluminium sulphate on soil pH, the activity of selected soil enzymes, efficiency as well as the growth parameters of pine seedlings. The study was conducted in a forest nursery, on a plot with soil pH 6.4 in water and 5.9 in 1MKCl. Such a pH is not conducive to the production of conifer seedlings, particularly pines. Two different doses of aluminium sulphate fertilizer were applied: 740 kg ha-1 and 1110 kg ha-1. Both doses significantly reduced the soil pH, whereas soil enzyme activity did not change. The lower dose had a positive impact on the growth parameters of pine seedlings, while the higher dose led to their deterioration. We observed statistically significant differences in average primary and lateral root lengths, number of short roots, and thickness of the neck root of seedlings. One- and 2-year-old seedlings did not show symptoms of nutrient deficiency and neither did concentrations of the investigated macronutrients and selected micronutrients in needles indicate such. After applying the higher fertilizer dose, we observed a favourable change in the composition of mycorrhizae. Out of the potential seedling pathogens we found Cylindrocarpon spp., Fusarium spp., Phytophthora spp., Pythium spp. and Rhizoctonia solani of which the most frequent were Fusarium oxysporum, Pythium spp. and R. solani. Their occurrence frequency differed between the treatments used in this experiment. This study confirms the positive effects of a low aluminium dose on the performance and growth parameters of pine seedlings. However, on the basis of the conducted experiments, it is difficult to say, whether this positive effect is due to a direct action of aluminium on the seedlings or rather an indirect effect caused by lowering the soil pH, which in turn impacts on mycorrhizae composition and hence pathogen development.
    Źródło:
    Leśne Prace Badawcze; 2014, 75, 2; 127-138
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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