Rare earth elements in paddy fields from eroded granite hilly land in a southern China watershed.

PLoS One · 2019 · PMC6738641 · PMID 31509591

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a decreasing trendno p-value reported

The distribution map of L/H shows a decreasing trend from east to west, except for the central part of the watershed.

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an increasing trendno p-value reported

The map of HREEs distribution shows an increasing trend from east to west and northwest, except for the small plot of low content in the central part of the watershed.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.