- Tytuł:
-
Drzewostanowa metoda określania uszkodzenia świerka
Method of assessment the damage to Norway spruce stands - Autorzy:
-
Dmyterko, E.
Bruchwald, A. - Powiązania:
- https://bibliotekanauki.pl/articles/1016295.pdf
- Data publikacji:
- 2007
- Wydawca:
- Polskie Towarzystwo Leśne
- Tematy:
-
defoliacja
uszkodzenia drzew
wskaznik uszkodzenia drzew
metoda drzewostanowa
Picea abies
lesnictwo
kryteria oceny
metody oceny
swierk pospolity
drzewa lesne
methods of assessment the damage to stands
norway spruce - Opis:
- Paper presents two variants of the method of assessment the damage to the Norway spruce stands that were determined on the basis of the crown development. The first one is based on the tree's defoliation, the other – on the tree's damage index W that includes defoliation (feature A), condition of the tree−top (feature B) and tree's vitality (feature C). Mean defoliation or index W is used to determine one of the four classes of the stand damage. The accuracy of both variants was worked out and minimum number of sample trees required within assumed standard errors of assessed features. Alarming picture of Norway spruce stands in Polish Carpathians and Sudety Mountains appeared for the damaged stands prevail while there is no undamaged stands.
- Źródło:
-
Sylwan; 2007, 151, 06; 24-33
0039-7660 - Pojawia się w:
- Sylwan
- Dostawca treści:
- Biblioteka Nauki
Artykuł