Fire usually causes changes in the composition and diversity of herbaceous species. The present paper aimed to
study the effect of repeated fire incidents on understory species diversity in the Saravan forests of Guilan Province
located in the north of Iran. To do so, three 50-hectare areas with identical physiographical conditions and overstory
(hand-planted softwood Pinus taeda) were selected. Seven fire incidences occurred for the 10-year period
in one of the areas and the other area experienced three fire incidents within the same period. The area with no
fire incidents was considered as the control area. All the fire incidents were surface ones. The systematic random
method with a sample size 100 × 200 m was used for collecting data. Based on the above, 25 samples were determined
in each area. The whole coverage of the understory was taken into consideration using Whittaker’s method
and the Domain criterion so as to calculate species diversity indices. The results showed that Shannon-Wiener
diversity and Menhinick’s richness in the regions which experienced 3 and 7 fire incidents were maximum and
minimum, respectively, whereas no significant difference was seen between the regions with regard to Smith and
Wilson’s evenness index.
Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies
Informacja
SZANOWNI CZYTELNICY!
UPRZEJMIE INFORMUJEMY, ŻE BIBLIOTEKA FUNKCJONUJE W NASTĘPUJĄCYCH GODZINACH:
Wypożyczalnia i Czytelnia Główna: poniedziałek – piątek od 9.00 do 19.00