摘要
分析了泉州湾洛阳江河口沉积物中总磷及5种形态磷（可交换态磷（DP）、铁铝结合态磷（Fe/Al-P）、钙结合态磷（Ca-P）、有机磷（OP）和闭蓄态磷（Re-P））的含量,探讨了它们的垂向分布特征、相互关系及环境指示意义。结果表明：沉积物中的总磷（TP）以无机磷为主,占TP比例76%-89%;除可交换态磷外,沉积物中形态磷的垂向分布规律具有相似性,大体随深度增加而减小,且在表层有富集现象,反映了沉积物中总磷和各形态磷的分布受人类活动影响较明显;通过相关性分析,钙结合态磷是总磷和无机磷的主要控制因素,而总磷和其他形态磷（除了可交换态磷外）相互间均具有显著相关性,且有机质对各形态磷的分布均有一定影响;TP和各形态磷含量,以及（Fe/Al-P）/TP、Ca-P/TP、OP/TP都在同一层出现了显著变化,反映了水利设施和围垦工程对沉积环境和各形态磷迁移转化有较大影响。
Sediment samples were collected from the Luoyang Estuary of Quanzhou Bay, Fujian Province, and their total phosphorus （TP）, exchangeable phosphorus （DP）, phosphorus bound to Fe/Al oxides （Fe/Al-P）, phosphorus bound to calcium （Ca-P）, organic phosphorus （OP）, and occluded phosphorus （Re-P） were determined, aimed to study the vertical distribution patterns of the P forms, their correlations, and environmental indication significances. The TP in the sediments was dominated by inorganic phosphorus （IP） （76%-89%）. All the phosphorous forms except DP had similar vertical distribution pattern, i. e. , decreased with sediment depth, and more concentrated in surface layer, indicating that the distribution of TP and phosphorus forms in the sediments was obviously affected by human activities. Correlation analysis showed that Ca-P was the main factor controlling TP and IP, there were significant correlations between TP and phosphorus forms except DP, and organic matter had definite effects on the distribution of phosphorus forms. The contents of TP and all phosphorus forms, and the ratios of Fe/Al-P, Ca-P, and OP to TP in the same sediment layers presented obvious change, illustrating that water conservancy and seabed reclamation had great effects on the sediment environment and the transfer and transformation of phosphorus forms.
出处
《生态学杂志》
CAS
CSCD
北大核心
2010年第1期84-90,共7页
Chinese Journal of Ecology
基金
国家自然科学基金项目(40673061)
泉州市科技计划重点项目(2008Z9)
东华理工大学教育部重点实验室开放基金资助项目(070714)
关键词
形态磷
柱状沉积物
洛阳江河口
泉州湾
phosphorus form
core sediment
Luoyang Estuary
Quanzhou Bay.
