As a result of its high capability in interception of precipitation and enhanced evaporation of soil surface , the development of microbiotic crusts will more and more threaten the soil water condition which the artificial sand - fixing vegetation should rely on 在1956年固沙區(qū),原來(lái)的花棒+檸條+油蒿為主的人工系統(tǒng)向油蒿+霧冰藜+小畫(huà)眉草+隱花植物為主的半人工半天然系統(tǒng)的演變。