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    Wyświetlanie 1-3 z 3
    Tytuł:
    The population structure and regeneration of Sorbus torminalis in Hadecka planinka National Nature Reserve (Czech Republic)
    Autorzy:
    Madera, P.
    Kohoutek, M.
    Senfeldr, M.
    Repka, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/41463.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    population structure
    regeneration
    Sorbus torminalis
    wild service tree
    age structure
    forest system
    species protection
    chequer tree zob.wild service tree
    checker tree zob.wild service tree
    Hadecka Planinka National Nature Reserve
    Czech Republic
    Opis:
    We performed a detailed overall field survey of all specimens of the wild service tree Sorbus torminalis (L.) Crantz in the research area in the Hádecká planinka National Nature Reserve. This research area, with an area of 80 ha, contains one of the largest populations of the tree in Europe. In all, 1713 specimens were found. This study provides a detailed description of the wild service tree population in the area. The basic biometric parameters (height, GBH, social position, fertility) of thepopulation were assessed. The main emphasis of our analysis was to evaluate the population's age structure. We used estimates of age structure based on the Chapman-Richards growth function to perform this evaluation. During the past twenty years, the natural regeneration of the wild service tree in the nature reserve has decreased considerably. At an experimental plot where a high forest was converted to a coppice with standards, regeneration occurred over 75% of the area. Root suckers were found at the beginning of the observation period. After 2–3 years, generative regeneration occurred.
    Źródło:
    Dendrobiology; 2012, 68
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Root system development in two provenances of Picea abies at two different sites
    Autorzy:
    Mauer, O
    Palatova, E.
    Beran, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/41607.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    international conference
    Europe
    forest ecosystem
    plant breeding
    tree
    Norway spruce
    Picea abies
    root system architecture
    skeletal root
    fine root
    root system development
    provenance
    biomass
    vitality
    length
    Opis:
    The paper examines the development of the root system (both skeletal and fine roots) in 19-year-old Norway spruce (Picea abies (L.) Karst.) of two provenances (from altitudes 320 m and 1100 m), growing on two plots (540 m a.s.l., lowland, modal Cambisol; 820 m a.s.l., slope, ranker podzol), by comparing 34 parameters. The results show that the root system emergence is not affected by provenance but rather by site, namely by soil type and terrain slope. At an altitude of 540 m, both provenances produced an anchoring root system of circular floor projection with a rooting depth of 80 cm, while at an altitude of 820 m they had an elliptical superficial root system with a rooting depth of 45 cm. At the higher-situated plot, the provenance from an altitude of 1100 m showed a higher biomass, vitality, and specific length of fine roots.
    Źródło:
    Dendrobiology; 2009, 61 Supplement
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Practical use of the mycorrhizal fungal technology in forestry, reclamation, arboriculture, agriculture, and horticulture
    Autorzy:
    Marx, D H
    Marrs, L.F.
    Cordell, C.E.
    Powiązania:
    https://bibliotekanauki.pl/articles/41164.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    root system
    forestry
    agriculture
    Ectomycorrhizae
    mycorrhizal fungal technology
    practical treatment
    forest tree
    reclamation
    horticulture
    Opis:
    Fine nonwoody roots (<2 mm) of plants, which are responsible for most mineral and water absorption, are located in the upper 20 to 30 cm of soil. The rhizosphere, the zone around these fine roots, supports diverse microorganisms in great numbers. Dynamic rhizosphere processes involve microbial saprophytic, pathogenic, and symbiotic associations with plants. Certain species of saprophytic bacteria oxidize mineral elements, like P, into soluble forms, fix atmospheric N, stimulate root growth by producing plant growth regulators, act as biological deterrents to root-disease causing organisms, and decompose man-made and natural organic chemicals in the rooting zone. The major symbiotic associations on plant roots are mycorrhizae. There is considerable published research in the world literature proving the biological, physiological and ecological significance of ectomycorrhizae and vesicular-arbuscular mycorrhizae (VAM) to the survival, growth, development and health of many species of agricultural and horticultural plants, and of forest trees. This information is critical to our understanding of plant growth and development and their ecology. In the past, the limiting factors in the practical management of mycorrhizal fungi in plant production have been the availability of affordable and good quality inocula of the ectomycorrhizal and VAM fungi and the development of simple methods to apply these inocula either to the soil or to the roots of plants. It was only after these protocols were developed that scientists could then test under "real-world" conditions the practical and economic significance of the management of these fungi in plant productivity. Many of the problems associated with commercial inoculum production have been eliminated allowing the production of quality products containing ectomycorrhizal and/or VAM fungal propagules to diverse plant markets. These fungal products are being commercially applied to plants in diverse green markets. The results of their application are improved survival, growth and productivity of forest trees and other woody plants on reforestation, urban and reclamation sites, horticultural crops such as those grown in woody ornamental nurseries and various agricultural crops grown in fumigated soils. This presentation is a brief review of the research and operational applications done in support of the practical use of the mycorrhizal fungal technologies in forestry, reclamation, horticulture and agriculture.
    Źródło:
    Dendrobiology; 2002, 47
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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