( 2021 ) found that in Populus alba plantations, the diversity index of soil fungal communities showed a trend of first increasing and then decreasing with forest age (4a, 9a, 15a, 25a, and 30a), with available phosphorus and nitrate nitrogen being significant influencing factors.
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Forest Age and Soil Depth Mediate the Effects of Soil and Root Traits on Soil Microbial Community in Plantations.
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The sentences
The content of soil nutrients exhibited a decreasing trend with increasing soil depth, which aligned with previous studies (Wu et al. 2020 ), and supported part of our first hypothesis.
This confirmed the results of previous studies that bacterial diversity showed an increasing trend in Eucalyptus urograndis plantations (Xu et al. 2020 ) and a decreasing trend in Populus euramevicana plantations (Liu, Hou, et al. 2024 ) with forest age.