Evaluation of different managements in Haloxylon ammodendron forest in Ulan Buh Desert

The vegetation, disease and pest were investigated and community and population characteristics were analyzed to evaluate the different management measures(enclosed, rotational grazing and non-enclosed) in Haloxylon ammodendron forest in Ulan Buh desert. The results showed that the growth of H. ammodendron in the enclosed area was better than those in rotational grazing area which was better than those in non-enclosed area. The community diversity index and evenness index decreased with were following order: enclosed areathe rotational grazing areathe non-enclosed area whereas the ecological dominance reversed in this order. Age structures of the enclosed and rotational grazing area were growth type and that of the non-enclosed area was stable type. Enclosed and rotational grazing management can promote growth of H. ammodendron which were reasonable management types.