Document Type : Research Paper
Authors
Abstract
Accessibility to a major portion of basic information about vegetation function of rangeland ecosystems is provided via autecologcal study of range plant species. These information are required for proper management of related rangelands. This research was conducted to examine the autecology of Cenchrus ciliaris in Khuzestan Province of Iran. Some topographic, climatic, and edaphic characteristics, as well as the boundaries of its natural habitats were determined. Also, the phenological stages of the plant were observed. Results showed that the habitats of this plant species are mainly located in south western and south eastern sections of the province, with east and south topographic aspects and altitudes ranging from 60 to 420 meters above sea level. This range plant generally grow on sandy loamy soils of the province. The soils of these habitats are slightly to moderately accompanied with debris and sandstones. Average annual precipitation at its habitats is 233-341 millimeters. Fall vegetative growth of this species began earlier than accompanied native species.
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