Exclusion can be considered as a management tool for restoring rangelands vegetation. In addition, rangeland managers observing the status of plants inside exclusion and comparing it with outside the exclusion can assess the condition of rangeland outside the exclusion one. This study investigated the effects of exclusion on vegetation and the amount of production in 2011. For this, two regions in Iran (around Yasooj city called Tange Sorkh and Mala- Shore) were selected. From each of inside and outside the exclusion areas, two representative regions were determined for sampling. In each representative region, four 100 meters transects and along each transect plot 10 m square were used and sampling was done using random– systematic method. Canopy cover was measured with plotting and production with clipping and weighting methods. The number of collected species in the exclusion is respectively, 2.4 and 2 times of grazed range at Tange-Sorkh and Mala- Shore sites. The independent t-test was used to examine and analyze the data. Results showed that increasing rangeland production due to exclusion at Tange- Sorkh site (about 80%) and Mala- Shore site (about 45%), respectively, in levels (p<%1) and (p<%5) are statistically significant. However, the increase of vegetation due to exclusion at Tange-Sorkh and Mala-Shore rangelands (23 and 5% respectively) statistically shows no significant, that particularly in the site of Mala-Shore can be caused by the invasion of perennial invasive and unpalatable species in grazed range.
