Land use changes in Zhangjiakou from 2005 to 2025 and the importance of ecosystem services.

PeerJ · 2021 · PMC8465993 · PMID 34631313

Europe PMC DOI

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a decreasing trendno p-value reported

In this study, we found clear evidence that water retention capacity in Zhangjiakou fluctuated from 2000 to 2015, with a decreasing trend.

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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.