Decadal drought deaccelerated the increasing trend of annual net primary production in tropical or subtropical forests in southern China.

However, within each of the three decades, the increasing rate of NPP showed a decreasing trend of 20.8% per decade.

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Our results showed an increasing trend for NPP at the rate of 0.076 g C m −2 a −1 from 1981–2012 (about 7.9% from 1982 to 1999), which was greater than the global rate (about 6% from 1982 to 1999) 8 .

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