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<p>The interaction between tree biomass and soil significantly impacts forest ecosystem productivity, making it crucial to study the coupling mechanisms between tree biomass and its soil microhabitat. We established 6 plots and classified all living trees into size classes in a 25-year-old <i>Pinus massoniana</i> plantation forest in Taizishan, Hubei Province, China. Then we measured and calculated their biomass. At the same time, we conducted soil sampling and weighted soil physicochemical indicators and enzyme activity indicators using the Soil Quality Index to characterize the soil microhabitat of each standing tree. We used analysis of variance, principal component analysis and regression analysis to examine the differences in soil characteristics across various tree size classes and to correlate these differences with the biomass of the corresponding tree sizes. Overall, soil microhabitat quality increased with size of <i>Pinus massoniana</i> (except small trees). The biomass of <i>Pinus massoniana</i> equisetum was significantly and positively correlated with the SQI of the soil in which it was located (<i>P</i> &lt; 0.05). Such results suggest that the living standing trees of big-sized <i>Pinus massoniana</i> play a greater role in improving their soil microhabitat and create more opportunities for the survival of small-sized <i>Pinus massoniana</i>. The increasing size of <i>Pinus massoniana</i> contributes to the overall quality of the soil microhabitat. At the same time, the improved quality of the soil microhabitat ensures that the trees in the region survive and thrive.</p>

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Tree Biomass Improves Soil Microhabitat in Pinus massoniana Forests of Central China

  • 期刊论文

  • 发表日期：

    2025年1月20日

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  • Jing Li,
  • Tian Chen,
  • Meng Zhang,
  • Yafei Shen,
  • Lixiong Zeng,
  • Wenfa Xiao,
  • Ruimei Cheng

摘要

The interaction between tree biomass and soil significantly impacts forest ecosystem productivity, making it crucial to study the coupling mechanisms between tree biomass and its soil microhabitat. We established 6 plots and classified all living trees into size classes in a 25-year-old Pinus massoniana plantation forest in Taizishan, Hubei Province, China. Then we measured and calculated their biomass. At the same time, we conducted soil sampling and weighted soil physicochemical indicators and enzyme activity indicators using the Soil Quality Index to characterize the soil microhabitat of each standing tree. We used analysis of variance, principal component analysis and regression analysis to examine the differences in soil characteristics across various tree size classes and to correlate these differences with the biomass of the corresponding tree sizes. Overall, soil microhabitat quality increased with size of Pinus massoniana (except small trees). The biomass of Pinus massoniana equisetum was significantly and positively correlated with the SQI of the soil in which it was located (P < 0.05). Such results suggest that the living standing trees of big-sized Pinus massoniana play a greater role in improving their soil microhabitat and create more opportunities for the survival of small-sized Pinus massoniana. The increasing size of Pinus massoniana contributes to the overall quality of the soil microhabitat. At the same time, the improved quality of the soil microhabitat ensures that the trees in the region survive and thrive.