Growth and Physiology of Two Psammophytes to Precipitation Manipulation in Horqin Sandy Land, Eastern China.

Plants (Basel) · 2019 · PMC6681498 · PMID 31340533

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a decreasing trendno p-value reported

The annual precipitation is approximately 351.7 mm, but this has shown a decreasing trend in recent years [ 6 ].

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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.