[ Objective] The aim was to study the activity of soil enzyme of artificial stand-binding vegetation area. [ Method] By collecting sample in the surface (0 ～ 5 cm) of quicksand, natural vegetation and artificial sand-binding vegetations made in 1956, 1964, 1981, 1987,1990, the activities of soil urease, saccharase, phosphatase, cellulose, polyphenoloxidase, amylase and catalase were investigated. [ Result] The orders of enzyme activity were natural vegetation area ＞ artificial vegetation area in 1956 ＞ artificial vegetation area in 1964 ＞ artificial vegetation area in 1981 ＞ artifcial vegetation area in 1987 ＞ artificial vegetation area in quicksand area during different sand-binding soil surface.The orders of enzyme activity during different soil surface were windward slope ＞ leeward slope at the same time. [ Conclusion] This result provides some reference for increasing artificial stand-binding fixed the stability of sand dune engineering system.%[目的]研究人工固沙植被区土壤酶的活性.[方法]通过采集流沙,自然植被区,1956、1964、1981、1987、1990年人工固沙植被的土壤表层样品(0-5 cm),对各类型土壤的脲酶、蔗糖酶、磷酸酶、纤维素酶、多酚氧化酶、淀粉酶、过氧化氢酶活性进行了研究.[结果]不同固沙年代土壤表层(0-5 cm)酶活性大小依次为自然植被区>1956年人工植被区>1964年人工植被区>1981年人工植被区>1987年人工植被区>流沙区;同一年代回沙植被区,不同地形之间土壤表层(0-5 cm)酶活性大小依次为迎风坡>背风坡.[结论]该研究结果为提高人工植被固定沙丘工程系统的稳定性提供了依据.
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