Vegetation Restoration Technology of Planting Haloxylon ammondendron in Desertification Sandy Land

Desertification is a serious world-facing environmental problem，in land degraded ecosystems，vegetation restoration is the first work of restoration ecology，and vegetation restoration is an important approach to protest of desertification.Mechanical barrier were set up and artificial drought-resistant plants Haloxylon ammondendron were planted in Xiaoquanzi Desertification Control Station in Linze，and soil water content，growth dynamic and effect of windbreak and sand-fixation around its root system were studied.Results showed that，Haloxylon ammondendron of desertification in northwestern arid and semi-arid region has a good growth momentum.In the region，study of typical sand dune in different grade of sand dunes，it was found that with help of mechanical sand-fixation，Haloxylon could grow better，and accumulation of stem and root growth showed an increasing trend，plants Haloxylon could has a better windbreak and sand-fixation effect on the typical dune，with developed of root and stem，its sand-fixing effects would be gradually enhanced.