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Wyszukujesz frazę "forest site quality" wg kryterium: Temat


Wyświetlanie 1-2 z 2
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:
Badania nad bonitacją drzewostanów w świetle literatury
Site index research: a literature review
Autorzy:
Kedziora, W.
Tomusiak, R.
Powiązania:
https://bibliotekanauki.pl/articles/2142721.pdf
Data publikacji:
2020
Wydawca:
Instytut Badawczy Leśnictwa
Tematy:
forest site index
tree growth
forest site quality
forest site productivity
wskaźnik bonitacji drzewostanów
wzrost drzew
jakość drzewostanów
produkcyjność drzewostanów
Opis:
the purpose of this paper was to review literature covering the topic of site index with particular emphasis on Scots pine, the most important forest-forming species in poland. we discuss the history of the site index, research on various tree species, statistical modelling methods, the spatial application of site index and age impact assessment. the history of research on the site index of forest species is long and dates back to the 18th century. Many researchers thought that determining the quality of the habitat is very important from the point of view of rational forest management. the site index, as a measure of the potential of the habitat on which the forest grows, is one of the most important characteristics of forest stands. the site index depends on the selected model, but is most often expressed as the average or top height of trees of a given species at a certain age. In our review, we point out several insufficiencies of studies on the site index, external influences and the connection of the site index with spatial conditions. Furthermore, research conducted so far has not explicitly confirmed that there is a relationship between the site index of pine stands and their geographical location in poland. More research on the site index, especially in regard with climate change, is needed.
Źródło:
Leśne Prace Badawcze; 2020, 81, 2
1732-9442
2082-8926
Pojawia się w:
Leśne Prace Badawcze
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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