Comparison of grazed and ungrazed vegetation of subalpine ecological zone at Sari
Mohammad Noor
ABSTRACT
Vegetation changes in an exclosure at Sari (Kaghan) established in August 1976 were compared with areas open to grazing after one year of protection. Forage production increased three fold. The increase was due both forbs and grasses. The percent cover of grasses and forbs also increased. The percent cover of Agrostis gigantea and Potentilla sibbaldia increased significantly inside whereas Poa alpina was more outside the exclosure. The later reacted as increaser in the area open to grazing. Agrostis gigantea and Potentilla sibbaldia reacted as decreasers in the grazed area. The frequency of grasses and fobs was not affected.
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