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生态学杂志 ›› 2010, Vol. 29 ›› Issue (01): 84-90.

• 研究报告 • 上一篇    下一篇

泉州湾洛阳江河口沉积物中磷的形态分布

袁栋林;胡恭任**;于瑞莲   

  1. 华侨大学环境科学与工程系,福建泉州 362021
  • 出版日期:2010-01-08 发布日期:2010-01-08

Distribution of phosphorus forms in sediments of Luoyang Estuary, Quanzhou Bay.

YUAN Dong-lin;HU Gong-ren;YU Rui-lian   

  1. Department of Environmental Science and Engineering, Huaqiao University, Quanzhou 362021, Fujian, China
  • Online:2010-01-08 Published:2010-01-08

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。

关键词: CO2浓度增高, 土壤水解酶, 土壤氧化还原酶, 酶活性

Abstract: Sediment samples were collected from the Luoyang Estuary of Quanzhou Bay, Fujian Province, and their total phosphorus (TP), exchangeable phosphorus (D-P), phosphorus bound to Fe/Al oxides (Fe/AlP), phosphorus bound to calcium (Ca-P), organic phosphorus (OP), and occluded phosphorus (Re-P) weredetermined, 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 phosp
horus 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 rat
ios 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.

Key words: Free-air CO2 enrichment(FACE), Soil hydrolase, Soil oxidoreductase, Enzyme activity