Heavy metals in agricultural soil in China: A systematic review and meta-analysis.

Eco Environ Health · 2022 · PMC10702913 · PMID 38077260

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a decreasing trendno p-value reported

Although the Cd level in SJ showed a decreasing trend, the mean values of Cd exceeded the 1990 background values in all five regions.

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an increasing trendno p-value reported

Based on the number of regions where the pollutants showed an increasing trend, the impact severeness of the pollutants is ranked in the order of: Cd (4 regions) > Cu (3) > Hg (2) = Pb (2) > Zn (1) = As (1) > Ni (0) = Cr (0).

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