Taxonomy and determination of conservatism coefficient for herb layer of three forest types in central Zagross

Document Type : Scientific article

Authors

1 Ph.D candidate of silviculture and forest ecology, Faculty of Agricultural and Natural Recourses, Lorestan University, Khorramabad, I. R. Iran

2 Associate Professor, Department of Forestry, Faculty of Agricultural and Natural Recourses, Lorestan University, Khorramabad, I. R. Iran

3 Assistant Professor, Department of Forestry, Faculty of Agricultural and Natural Recourses, Lorestan University, Khorramabad, I. R. Iran

4 Assistant Professor, Department of Silviculture and Forest Ecology, Gorgan University of Agricultural Sciences and Natural Recourses, Gorgan, I. R. Iran

Abstract

This study investigates floristic quality of central Zagros forest in relation to environmental disturbances using conservatism coefficient. Tree layer of the most important forest types in central Zagros was surveyed using 24 plots (500 m2 area) and herb layer was measure by 72 plots (4 m2 area). Then the list of collected flora send to an expert group of botanist and ecologist to assign conservatism coefficient to them based on the amount of each species sensitivity to disturbances and fidelity to the ecological site condition. Based on the results only a few species take high rank score which means the most collected plant species were sensitive to the disturbances and have low fidelity to the site. In fact more than half of the collected species belong to the lowest class of conservatism coefficient (1-3), which pyrus glabra forest type involves the most plant species of this class.

Keywords


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