艾比湖桦适生土壤特征分析

为了研究特有种艾比湖桦生长的土壤条件，选择该桦树生长的土壤为研究对象，运用分析化学及土壤地理学的方法，对土壤中的养分及盐分指标进行了测试，结果表明:艾比湖桦生长的土壤中，盐分含量的变化范围为0.05%～2.47%，均值 < 1%，表聚现象明显，属于轻度盐化土壤，明显低于艾比湖湿地其它区域。有机质含量多为17.47～29.62 g/kg，速效氮、磷、钾等养分含量均较高，pH值变幅为7.78～8.48，呈碱性；主成分分析结果表明:土壤速效磷、有机质、pH值、水解氮、土壤盐分等理化指标构成了艾比湖桦适生土壤的特征因子。综合而言，艾比湖桦适生土壤特征为盐分含量低、养分含量高。

Analysis on Soil Characteristics for Growth of Ebinurbirch

In order to understand the soil conditions for Ebinurbirch growth, the soil for growth of Ebinurbirch(a new species of Ebinur Lake wetland) was selected as the research object in this paper. Soil nutrient(organic matter, phosphorus, AK, nitrogen), salinity and eight ions were measured by the methods of analysis chemistry and soil geography. The results show that in the soil for growth of the Ebinurbirch, the range of salt content is between 0.05%～2.47%, and the mean of salt content is less than 1%, surface gathered salt is obvious, the soil belongs to the mild salinization. The salt content of this area is lower than that in the other area of Ebinur lake wetland. Organic matter content is between 17.47 g/kg～29.62 g/kg, the contents of phosphorus, AK, nitrogen are higher. The range of pH is 7.78～8.48, the results indicate that the soil is alkaline. The principal component analysis showed that the chemical indicators (soil available phosphorus and organic matter, pH value, hydrolytic nitrogen, soil salinity) formed the soil characteristic factors for growth of Ebinurbirch. Notwithstanding the foregoing, the soil characteristics for growth of Ebinurbirch are low salt and high nutrient.