Jornal Europeu de Biologia Experimental Acesso livre

Abstrato

Evaluation of different sampling methods to study of shrub density in Zagros forest

Yousef Askari, Elmira Kafash Saei and Dorna Rezaei

Collection of appropriate qualitative and quantitative data is necessary for proper management and planning. To determination of suitable sampling methods (distance methods) to study of shrub density 53 hectare of Chartaghe forest reserve in Ardal region, chaharmehal and Bakhtiari Province in southern Zagros forest was selected (southwest of Iran). Information includes the position of shrub and kind of species was recorded. Distance sampling methods was nearest individual, nearest neighbor, second nearest neighbor, T-Square and compound in the 150×100 meter net. To study of spatial pattern of shrub used Johnson and Zimmer, Heines and Eberhart. Data analyzing was done by SPSS16 and Ecological Methodological software’s to compare of sampling methods to real quantity used the t-test, Leven and ANOVA test. T-test analysis showed that two nearest neighbor and compound sampling methods not different to perfect inventory (real quantity). The spatial distribution of shrub in the study sites showed two patterns of distribution which are clumped distribution. General results showed that shrub species in southern Zagros forest has clumped distribution and to study of shrub density (N/ha) nearest neighbor (Byth and Ripley) and compound (Byth) was suitable sampling method. Authors suggested to study of shrub density in the southern zagros forest used the two sampling methods.