Accelerated land surface greening caused by earlier permafrost thawing.

We then determined the time series of β SOT using 15-year moving windows from 1982 to 2021 at each pixel and found that 38.6% of regions exhibited a significant increase in β SOT for kNDVI, while 22.0% showed a decreasing trend ( p < 0.05) (Fig. 1A ).

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