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湖泊科学  2001 

杭州西湖底泥磷分级分布

DOI: 10.18307/20010308

Keywords: 杭州西湖,底泥,磷分级

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Abstract:

采用磷分级分离法对在杭州西湖采集的柱状泥样进行了磷分级提取.结果发现:HCl-rP即钙矿磷占据了西湖底泥总磷含量的30%-70%,其余依次为NaOH-rP(16%-40%)和NH4Cl-rP(0.6%-10%);活性磷由NaOH-rP和NH4Cl-rP构成,占总沉积磷的20%-40%.各磷分级组分和活性磷的垂直分布与总磷基本一致,含量随泥层深度的降低逐级增加,在10-30cm处形成峰值,但表层的蓄积量又出现逐层下降的趋势.

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