C/N/P accumulation rates at three cores showed an increasing trend since 1950, particularly after 1980, which is consistent with the increase of population and fertilizer consumption of Liangjiang City ( Figure 5 ).
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Human activity has increasingly affected recent carbon accumulation in Zhanjiang mangrove wetland, South China.
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The sentences
The contribution of GQ20-Man2 to mangrove production showed a trend of first increasing and then decreasing over time.