Characteristics of organic phosphorus fractions in different trophic sediments of lakes from the middle and lower reaches of Yangtze River region and Southwestern Plateau, China.
Characteristics of organic phosphorus fractions in different trophic sediments of lakes from the middle and lower reaches of Yangtze River region and Southwestern Plateau, China.
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DOI：
10.1016/j.envpol.2007.06.024
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发表时间：
2008-03
影响因子：
8.9
通讯作者：
Runyu Zhang;Fengchang Wu;Congqiang Liu;P. Fu;Wen Li;Li-ying Wang;Hai-qing Liao;Jian-yang Guo
中科院分区：
文献类型：
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作者：
Runyu Zhang;Fengchang Wu;Congqiang Liu;P. Fu;Wen Li;Li-ying Wang;Hai-qing Liao;Jian-yang Guo
本研究采用土壤分馏方案，研究了长江中下游地区和西南高原6个湖泊沉积物中有机磷（Po）组分的特征，并探讨了Po、无机磷（Pi）与污染状况之间的关系。结果表明，各组分的排序为：残留Po>HCl-Po>黄腐酸-P>腐植酸-P>NaHCO3-Po，平均相对比例为8.7:4.6:3.2:2.1:1.0。 Po 组分，尤其是不稳定的 Po，与有机质、Po 和 NaOH-Pi 显着相关。在这两个不同的区域观察到 P 分数的不同分布模式。重度污染沉积物中的Po分数高于中度污染和无污染沉积物，建议在湖泊富营养化调查中应重点关注Po。
In this study, the characteristics of organic phosphorus (Po) fractions in sediments of six lakes from the middle and lower reaches of Yangtze River region and Southwestern China Plateau, China were investigated using a soil Pofractionation scheme, and the relationships between Po, inorganic phosphorus (Pi) and pollution status were also discussed. The results show that the rank order of Pofractions was: residual Po>HCl-Po>fulvic acid-P>humic acid-P>NaHCO3-Po, with their average relative proportion 8.7:4.6:3.2:2.1:1.0. Pofractions, especially nonlabile Po, were significantly correlated with organic matter, Poand NaOH-Pi. Different distribution patterns of P fractions were observed in those two different regions. Pofractions in the heavily polluted sediments were higher than those in moderately and no polluted sediments, it is suggested that Poshould be paid more attention in the lake eutrophication investigation.