TEST ON FORBIDDEN GRAZING IN SPRING GRASSLAND IN ALPINE PASTURE

Test of forbidden grazing in spring grassland for 40days in zhexiao village Angqian county Yushu prelfecture. From investigation of vegetable quantity in grassland and weigh chang of Tibetan-sheep. the result shows that grass is natural growth in forbidden grazing grassland and vegetable quantity increases 1.69 times in forbidden grazing grassland than in grazing grassland, vegetable quantity in forbidden grazing grassland increased 6.15point percent than in grazing grassland under ground. It is an effective countermeasure to protect grassland eco-environment and to develop animal husbandry sustainable.