富营养化
高原(数学)
长江
环境化学
磷
环境科学
中国
营养物
营养水平
水文学(农业)
化学
地质学
地理
生态学
生物
考古
岩土工程
有机化学
数学分析
数学
作者
Runyu Zhang,Fengchang Wu,Cong‐Qiang Liu,Pingqing Fu,Lijuan Wen,Liying Wang,Hao Liao,Jun Guo
标识
DOI:10.1016/j.envpol.2007.06.024
摘要
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 Po fractionation scheme, and the relationships between Po, inorganic phosphorus (Pi) and pollution status were also discussed. The results show that the rank order of Po fractions 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. Po fractions, especially nonlabile Po, were significantly correlated with organic matter, Po and NaOH-Pi. Different distribution patterns of P fractions were observed in those two different regions. Po fractions in the heavily polluted sediments were higher than those in moderately and no polluted sediments, it is suggested that Po should be paid more attention in the lake eutrophication investigation.
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