| The Ejina oasis nourished by Heihe water causes a series of water environment problem, because the water is short or resource of water is not used appropriately in recent years. This paper researches on some factors including the moisture content variety and the infiltration ability (Kfs) of the soil, underground water level dynamit variety, soil structure factors, the weather factors etc. in Ejina oasis. The results show that the Ejina oasis soil humidity conditions are close with oasis's plant growth, and the soil texure type, the underground water level dynamit variety and the soil salts are main factors that decide plants growth lived in the oasis area, and the condition of plants growth also has outstanding influence on the variation of soil humidity in the oasis area. The infiltration ability (Kfs) is very strong in this area. The corresponding ecological adaptable water level of each plant type in the oasis area is put forward. This paper analyzes the state of soil humidity of the Ejina oasis comprehensively in different layers and angles on the foundation of former research, provide scientific basis for protecting and recovering the oasis ecosystem, and provide the theorys foundation for mdicating the mechanism of ecology consuming water and the sustainable development of the oasis area in the future.
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