[目的]评价北京野鸭湖湿地土壤磷的生物可利用性[方法]利用柱状采样器分层采集北京野鸭湖湿地土壤样品,测定生物可利用磷和总磷含量,并讨论各形态BAP间及其与TP的相关关系[结果]湿地土壤中的生物可利用磷含量较低,仅占总磷的0.10％ ～8.66％.各种生物有效磷的含量次序为:AAP＞ Olsen-P＞ WSP＞ RDP.垂直方向上,AAP、Olsen-P含量随土壤深度增加呈指数下降趋势[结论]AAP、Olsen-P与总磷的相关性较好,可用于评价该湿地土壤的潜在释磷能力.%[Objective] The research aimed to evaluate phosphorus nonavailability of soils in Beijing Yeyahu Wetland. [Method] Layer aoif samples were collected by columnar sampler. The contents of bioavailable phosphorus and total phosphorus in soils were measured, and the correlations between them were sutdied separately. [Result] The contents of BAP were in a low level which accounted 0.10% -8. 66% of TP in soils. The sequence of the contents of the four kinds of BAP was as follows: AAP > Olsen-P > WSP > RDP. The contents of AAP and Olsen-P in the soils decreased exponentially with the increase of the soil depth increased. [Conclusion] AAP and Olsen-P could be usi-d to evaluate the ability of soil phosphorus release potential for that the contents of them and the content of TP showed significant correlation.
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