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2009年4月22日、6月23日、8月31日和10月31日,在白洋淀鸳鸯岛、北田庄和圈头村芦苇(Phragmites australis)台地3个垂直剖面(0～10cm、10～30cm和30～60cm)上采集了土壤样品,分析了不同季节的土壤理化因子和4种土壤酶活性的时空变化及其相互关系。结果表明,白洋淀芦苇台地土壤含水量随着土壤深度的增加而增加;土壤有机质含量随土壤深度的增加而减少,0～10cm表层土的有机质含量都在70g/kg以上;土壤的全氮和全磷含量随土壤深度的增加而减少,各采样地0～10cm表层土壤的全氮含量为2.04～3.41g/kg,全磷含量为0.71～1.14g/kg。3块采样地0～60cm土壤的蔗糖酶活性、碱性磷酸酶活性、脱氢酶活性和荧光素二乙酸酯(FDA)水解酶活性分别为0.53～28.56mg/g、0.44～2.36mg/g、1.62～12.18mg/g和8.07～172.65μg/g,表层土壤具有较大酶活性。芦苇台地4种土壤酶活性与土壤含水量呈显著负相关(p<0.01),与土壤有机质含量、全氮含量、全磷含量呈显著正相关(p<0.01)。
On April 22, June 23, August 31 and October 31, 2009, three vertical sections (0 ~ 10cm, 10 ~ 30cm) of the Phragmites australis platform in Yuanyang Island, Beitianzhuang, And 30 ~ 60cm), the spatio-temporal changes of soil physico-chemical factors and four soil enzyme activities in different seasons and their correlations were analyzed. The results showed that the soil water content of reed terrace in Baiyangdian Lake increased with the increase of soil depth. The content of soil organic matter decreased with the increase of soil depth. The content of organic matter in surface soil of 0 ~ 10cm was above 70g / kg. Phosphorus content decreased with the increase of soil depth. The total nitrogen content of surface soil of 0 ~ 10cm in each sampling site was 2.04 ~ 3.41g / kg and the total phosphorus content was 0.71 ~ 1.14g / kg. The activities of sucrase, alkaline phosphatase, dehydrogenase and fluorescein diacetate (FDA) hydrolase in 0 ~ 60cm soil were 0.53 ~ 28.56mg / g and 0.44 ~ 2.36mg / g, 1.62 ~ 12.18 mg / g and 8.07 ~ 172.65 μg / g, respectively. There was a significant negative correlation between soil enzyme activity and soil water content (p <0.01) and a significant positive correlation with soil organic matter, total nitrogen and total phosphorus (p <0.01).