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Climate factors affect forest biomass allocation by altering soil nutrient availability and leaf traits

Journal of Integrative Plant Biology 2023年第10期65卷 2292-2303页

作者： Hede Gong Wenchen Song Jiangfeng Wang Xianxian Wang Yuhui Ji Xinyu Zhang Jie Gao School of Geography and Ecotourism Southwest Forestry UniversityKunming 650224China College of Life Sciences Minzu University of ChinaBeijing 100081China College of Life Sciences Xinjiang Normal UniversityUrumqi 830054China College of Biological Sciences University of California DavisDavis 95616CaliforniaUSA Key Laboratory of Earth Surface Processes of Ministry of Education College of Urban and Environmental SciencesPeking UniversityBeijing 100091China

biomass in forests sequesters substantial amounts of carbon;although the contribution of aboveground biomass has been extensively studied, the contribution of belowground biomass remains understudied. Investigating the forest biomass allocation is crucial for understanding the impacts of global change on carbon allocation and ***, the question of how climate factors affect biomass allocation in natural and planted forests remains unresolved. Here, we addressed this question by collecting data from 384 planted forests and 541 natural forests in China. We evaluated the direct and indirect effects of climate factors on the belowground biomass proportion(BGBP). The average BGBP was 31.09% in natural forests and was significantly higher(38.75%) in planted forests. Furthermore, we observed a significant decrease in BGBP with increasing temperature and precipitation. Climate factors, particularly those affecting soil factors, such as p H,strongly affected the BGBP in natural and planted forests. Based on our results, we propose that future studies should consider the effects of forest type(natural or planted) and soil factors on BGBP.

关键词： aboveground and belowground biomass allocation natural forest planted forest precipitation soil factors temper-ature

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