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小叶锦鸡儿(Caragana microphylla)和差不嘎蒿(Artemisia halodendron)是科尔沁沙地典型的固沙灌木,它们在退化沙地的恢复过程中起着重要的作用。本研究对这两种灌木林地表层土壤理化性质和酶活性进行了比较。结果表明:小叶锦鸡儿比差不嘎蒿对沙丘土壤理化性质和酶活性的改善作用较大。其中,小叶锦鸡儿林地土壤黏粉粒含量比差不嘎蒿高3倍左右,土壤含水量是差不嘎蒿的1.31倍,土壤有机碳和全氮分别是差不嘎蒿的1.35和1.36倍,土壤过氧化物酶和脲酶活性分别是差不嘎蒿林地土壤的2和3倍。科尔沁沙地流动沙丘中种植小叶锦鸡儿和差不嘎蒿后,两种灌木均能改善沙丘土壤理化性质和酶活性,但是其改善能力存在一定差异,总体来说,在退化沙地土壤肥力和生物活性的恢复方面,小叶锦鸡儿的优势高于差不嘎蒿。
Caragana microphylla and Artemisia halodendron are typical sand shrubs in Horqin sandy land, and they play an important role in the restoration of degraded sandy land. In this study, the physical and chemical properties and enzyme activities of the topsoil of the two shrubbery forests were compared. The results showed that: Caragana microphylla than Artemisia canadensis on soil physical and chemical properties and enzyme activity to improve the dune. Among them, the soil Caragana microphylla soil clay powder content is about 3 times higher than that of Artemisia capillaris, the soil water content is 1.31 times that of Artemisia chinensis, soil organic carbon and total nitrogen are 1.35 and 1.36 times of Artemisia chinensis respectively , And soil peroxidase and urease activities were 2 and 3 times higher than those of Artemisia lanceolata woodland soil respectively. Both shrubs could improve soil physical and chemical properties and enzyme activity of sand dune in the sand dune of Horqin sandy land after planting Caragana microphylla and Artemisia ordosica, however, there were some differences in its improving ability. In general, The recovery of biological activity, Caragana microphylla superior to the superior Artemisia.