Effective potassium (AK) did not display a significant trend with stand age and attained a maximum value of 99.44 mg/kg in the mature forest (R).
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Soil N and P nutrient metabolism affected by fungal community in larch plantation.
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The sentences
It was observed that within the young forest group, there was a notable increasing trend in relative abundance of Ascomycota and a decreasing trend in species abundance of Basidiomycota as tree age increased (J1-3).
Soil N: P showed a trend of decreasing first and then increasing, which was consistent with the trend of N: P ratio in rhizosphere soil of Pinus massoniana Lamb. plantation in southern China ( Xu et al., 2022 ).
The TN in the rhizosphere soil of larch in Northeast China showed an increasing trend in different time series, reaching the peak at the mature stage of forest, while TP showed a decreasing trend, reaching the minimum value of 0.49 g/kg at the near mature stage of forest ( Yan et al., 2017 ).