盐沼植物翅碱蓬对沉积物中磷环境化学行为影响  

Influence on environmental chemical behavior of the P in sediment caused by salina plant Suaeda heteroptera

作　　者：朱鸣鹤[1] 丁永生[2] 方飚雄[1] 丁德文[2] 

机构地区：[1]宁波大学海运学院,浙江宁波315211 [2]大连海事大学环境科学与工程学院,辽宁大连116026

出　　处：《海洋环境科学》2009年第3期275-278,共4页Marine Environmental Science

基　　金：国家“863”计划项目(2002AA648010);宁波大学科研基金及人才引进项目(XK200562,XY0600062);宁波市科技局项目(2006A610080,2007A61005);宁波市海洋渔业局项目

摘　　要：研究了翅碱蓬生长区根际、非根际(根上部和根下部)沉积物和未生长区沉积物对应断面(亚表层、表层和深层)P的环境化学行为。结果表明,无论有无植物生长,沉积物总磷(TP)由表层(根上部)至深层(根下部)呈现逐渐减少的趋势且均以无机磷(IP)为主,有机磷(OP)含量最少,但植物生长区沉积物中总磷含量显著地增加,特别是根际沉积物IP含量高达83%。对植物生长区和未生长区沉积物中IP的化学形态进一步分析表明,无论有无植物生长IP均以Ca-P为主,但在植物根际沉积物DP、Al-P和Fe-P均有显著增加,分别为未生长植物亚表层沉积物的3.5、8.3和3.7倍,从而导致活性磷比例增加,生物可利用性变大。The environmental chemical behaviors of P around rhizosphere sediment and non-rhizospbere sediment （upside root sediment and downside root sediment） in Suaeda heteroptera growth area and around the corresponding sections sediments （ inferior surface section sediment, surface section sediment and deep section sediment） in no Suaeda heteroptera growth area were researched. The resuits showed the total P around sediment had the gradual reduction trend from surface section sediment （ upside root sediment） to deep section sediment （downside root sediment） whether there had plant or not. Moreover the total P was dominated by the inorganic P, and the organic P was least. But the content of TP around sediments in plant reach added remarkably. To be pointed out especially, the IP of rhizospbere sediments increased to 83 percent. The chemical speciations of IP around plant reach and no plant reach sediment were ulteriorly analyzed, the results indicated that the IP was occupied chiefly by Ca-P whether there had plant or not. But the DP, Al-P and Fe-P in rhizosphere sediment enhanced observably, which were 3.5,8.3 and 3.7 times relatively those of in inferior surface section sediment. It ultimately led to the increase of active form of P and the bioavailability.

关 键 词：P 翅碱蓬 化学形态 沉积物 

分 类 号：P736.41[天文地球—海洋地质]