不同轮牧方式对荒漠草原土壤酶活性的影响

hanges of some several enzyme activities of soil (0-30cm) under different grazing ways in desert steppe were studied. The results showed that when the intensity of grazing was 0.75 sheep/hm2, urease, catalase, phosphatase, invertase and dehydrogenase activities decreased different degrees compared with the ungrazing grassland. With the increase in rotational grazing area, urease, invertase and dehydrogenase activities become upward trend, but catalase was little difference. Phosphatase activity in free grazing areas and two rotational grazing conditions were more than four zones and six zones rotational grazing. Enzymes activities of different soil layers in 0-30cm for grazing and ungrazing steppe decreased with the depth of the soil increased.