Document Type : Research Paper
Authors
1 Phd student, in range science, Islamic Azad University, Science and Research Branch, Tehran, Iran.
2 Professor, Faculty of Natural Resources,University of Tehran, Karaj, Iran
3 - Professor, Faculty of Natural Resources, University of Tehran, Karaj, Iran.
4 - Assistant Professor, Department of Range Management, Science and Research Branch, Islamic Azad University, Tehran, Iran.
5 - Associate Professor, Faculty of Natural Resources, University of Tehran, Karaj, Iran.
Abstract
Fire consider as a factor and basic management in rangeland in order to reform of composition and biological diversity that use in rangeland ecosystems. This project was established to deal with the effect of fire in the research center for rangeland. Zagheh locale where is in 35 km of north eastern of Khoramabad with 1960 meters above sea level. The average comparison and analysis show that herbal forbs which use for grazing form density and average o canopy cover have significant difference at the level of %1 between fire and control area. (p < %1).
This study shows that in short time, it is possible to replace perennial. The Prevailing type of grass such as Agropyron trichophorum - Bromus tomentellus and festuca ovina with annual grass like Bromus tectorum –Heteranthelium piliferum- Taeniatherum crinitum.
These changes indicate perennial grasses and increased annual grasses in short time.
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