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Related Experiment Video

Updated: Jul 23, 2025

Author Spotlight: Leaf Trait Analysis for Climate and Ecology Reconstruction in Modern and Ancient Plant Communities
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Climate factors affect forest biomass allocation by altering soil nutrient availability and leaf traits.

Hede Gong1, Wenchen Song2, Jiangfeng Wang3

  • 1School of Geography and Ecotourism, Southwest Forestry University, Kunming, 650224, China.

Journal of Integrative Plant Biology
|July 20, 2023
PubMed
Summary

Forest biomass allocation is key for carbon cycling. Belowground biomass proportion (BGBP) is higher in planted forests and decreases with warming temperatures and increased precipitation.

Keywords:
aboveground and belowground biomass allocationnatural forestplanted forestprecipitationsoil factorstemperature

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Area of Science:

  • Forest Ecology
  • Biogeochemistry
  • Climate Change Science

Background:

  • Forest biomass, particularly belowground biomass, plays a critical role in carbon sequestration and cycling.
  • Understanding forest biomass allocation is vital for assessing global change impacts on carbon dynamics.
  • The influence of climate factors on belowground biomass proportion (BGBP) in different forest types remains unclear.

Purpose of the Study:

  • To investigate the direct and indirect effects of climate factors on BGBP in natural and planted forests across China.
  • To compare BGBP between natural and planted forest ecosystems.
  • To elucidate the role of soil factors in mediating climate impacts on BGBP.

Main Methods:

  • Data collection from 384 planted forests and 541 natural forests in China.
  • Statistical evaluation of climate factor influences on BGBP.
  • Analysis of direct and indirect pathways, including soil properties like pH.

Main Results:

  • Planted forests exhibited a significantly higher average BGBP (38.75%) compared to natural forests (31.09%).
  • Increasing temperature and precipitation were associated with a significant decrease in BGBP.
  • Soil factors, especially pH, strongly mediated the effects of climate on BGBP in both forest types.

Conclusions:

  • Forest type (natural vs. planted) significantly influences belowground biomass allocation.
  • Climate factors, mediated by soil properties, are key drivers of BGBP.
  • Future research should integrate forest type and soil factors for a comprehensive understanding of forest carbon dynamics.