数字农科院2.0

Comparison Of Phosphorus Fraction In Eutrophic Lake Sediments From The Northern Hemisphere

文献类型： 外文期刊

作者： Huang, LD; Sheng, RY; Li, ZX; Sun, DQ; Yan, N

作者机构：

关键词： Phosphorus Fractionation; Total Phosphorus; Sediment; Generalised Linear Model

期刊名称： CHEMISTRY AND ECOLOGY

ISSN： 0275-7540

年卷期： 2020 年 36 卷 2 期

页码：

收录情况： JCR（2021版）

摘要： Lake sediments are subjected to intensive anthropogenic activities such as dumping of industrial waste water and leakage of P fertilisation from agricultural lands. There has a great body of research focusing on examining phosphorus fractions, which provide fundamental data that facilitate understanding the risk of P-induced eutrophication. Here, we have extracted the data of P fractions from 484 sediment samples residing in 48 lakes mainly in EU, China and USA. NH4Cl-P and total phosphorus (TP) displayed a well linear relationship, but not applicable to all lakes. Six groups were categorised as per the slope and intercept by using the clustering analysis. Specific measures were recommended to curb P release risk by considering the characteristics of each group. For instance, TP controlling is deemed as a priority in group with steep linear dependence of NH4Cl-P on TP. A significant correlation was determined between TP and NaOH-P (r(2) = 0.63). Among other findings, larger lake area significantly contributes to lower all P pools. Deeper depth could only pronouncedly influence the BD-P, HCl-P. Additionally, we found lakes in Germany have pronounced higher averaged P pools than other regions. Furthermore, this paper creates awareness of the present status of lake eutrophication for researchers and policy-makers.

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