In this study, vegetation diversity on a heavily grazed rangeland vvas compared with those on the excIosure. Results sho\ved that the excIosure had grater species diversity and plant growth than rangeland had. Only those species vvhich vvere resistant to grazing due to their morphological structures like sod forming gramineous (e.g. Lolium perenne L.), stoloniferous leguminous (e.g. Trifolium repens L.), rosette forming forbs (e.g. Plantago majör L. ) and some unpalatable shrubs with spines (e.g. Paliıırus spina-christii Mili) left, and majority of the plants which were present on the exclosure disappeared on the heavily grazed rangeland.