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Biological crusts in the wind and sand , to prevent soil erosion, changes in water distribution , etc., play an important role in recent years, domestic and foreign scientific and technical personnel a lot of this in -depth study . The artificial algal crusts research is still in the pilot study stage , this paper carried out the wild desert algal inoculation with indoor conditions and training . Artificial algal crusts on the growth characteristics of a preliminary study , the results show that the appropriate shade and watering desert algal crusts in favor of growth and development , grass - algae - algae irrigation governance model is the most ideal mode of governance . The surface of the sand desert algal growth , with the gradual thickening crust , Shami , sand onions and alkali grass psammophyte turn appears and coverage increased gradually by semi-fixed sand dunes sand dune to fixed dune succession , the last quicksand is fixed . Grow on the surface of the artificial sand desert algal crusts can change the physical and chemical properties of the soil . Soil moisture with thickening of algal crusts increased , with the desert algal growth and algal crust thickness increases, the soil pH decreased, but are larger than 7 , weakly alkaline ; available nutrients with crusts development increases, significant changes in available nitrogen , available phosphorus content change is small, and available phosphorus content than the available nitrogen content is low ; with the thickness of soil crusts increased organic matter , total nitrogen, total phosphorus content increased. This study is the use of desert algae Desertification provide a more effective , systematic theory.
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