Effects of climate and plant functional types on forest above-ground biomass accumulation

IF 3.9 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Carbon Balance and Management Pub Date : 2023-03-22 DOI:10.1186/s13021-023-00225-1

Xia Chen, Mingyu Luo, Markku Larjavaara

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引用次数: 1

Abstract

Background

Forest above-ground biomass (AGB) accumulation is widely considered an important tool for mitigating climate change. However, the general pattern of forest AGB accumulation associated with age and climate gradients across various forest functional types at a global scale have remained unclear. In this study, we compiled a global AGB data set and applied a Bayesian statistical model to reveal the age-related dynamics of forest AGB accumulation, and to quantify the effects of mean annual temperature and annual precipitation on the initial AGB accumulation rate and on the saturated AGB characterizing the limit to AGB accumulation.

Results

The results of the study suggest that mean annual temperature has a significant positive effect on the initial AGB accumulation rate in needleleaf evergreen forest, and a negative effect in broadleaf deciduous forest; whereas annual precipitation has a positive effect in broadleaf deciduous forest, and negative effect in broadleaf evergreen forest. The positive effect of mean annual temperature on the saturated AGB in broadleaf evergreen forest is greater than in broadleaf deciduous forest; annual precipitation has a greater negative effect on the saturated AGB in deciduous forests than in evergreen forests. Additionally, the difference of AGB accumulation rate across four forest functional types is closely correlated with the forest development stage at a given climate.

Conclusions

The contrasting responses of AGB accumulation rate to mean annual temperature and precipitation across four forest functional types emphasizes the importance of incorporating the complexity of forest types into the models which are used in planning climate change mitigation. This study also highlights the high potential for further AGB growth in existing evergreen forests.

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气候和植物功能类型对森林地上生物量积累的影响

森林地上生物量(AGB)积累被广泛认为是减缓气候变化的重要工具。然而，在全球尺度上，不同森林功能类型的森林AGB积累与年龄和气候梯度相关的总体格局尚不清楚。本研究编制了全球AGB数据集，运用贝叶斯统计模型揭示了森林AGB积累的年龄相关动态，量化了年平均温度和年降水量对AGB初始积累速率和表征AGB积累极限的饱和AGB的影响。结果研究表明，年平均温度对针叶常绿林中AGB初始积累速率有显著的正影响，对阔叶落叶林中AGB初始积累速率有显著的负影响;而年降水量对阔叶落叶林的影响为正，对阔叶常绿林的影响为负。年平均温度对阔叶常绿林饱和AGB的正向影响大于阔叶落叶林;年降水量对阔叶林饱和AGB的负影响大于常绿林。不同森林功能类型间AGB积累速率的差异与特定气候条件下森林发育阶段密切相关。结论4种森林功能类型的AGB积累速率对年平均温度和降水的响应对比表明，将森林类型的复杂性纳入气候变化减缓规划模型的重要性。这项研究还强调了在现有常绿森林中进一步生长AGB的巨大潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Carbon Balance and Management Environmental Science-Management, Monitoring, Policy and Law

CiteScore

7.60

自引率

0.00%

发文量

审稿时长

14 weeks

期刊介绍： Carbon Balance and Management is an open access, peer-reviewed online journal that encompasses all aspects of research aimed at developing a comprehensive policy relevant to the understanding of the global carbon cycle. The global carbon cycle involves important couplings between climate, atmospheric CO2 and the terrestrial and oceanic biospheres. The current transformation of the carbon cycle due to changes in climate and atmospheric composition is widely recognized as potentially dangerous for the biosphere and for the well-being of humankind, and therefore monitoring, understanding and predicting the evolution of the carbon cycle in the context of the whole biosphere (both terrestrial and marine) is a challenge to the scientific community. This demands interdisciplinary research and new approaches for studying geographical and temporal distributions of carbon pools and fluxes, control and feedback mechanisms of the carbon-climate system, points of intervention and windows of opportunity for managing the carbon-climate-human system. Carbon Balance and Management is a medium for researchers in the field to convey the results of their research across disciplinary boundaries. Through this dissemination of research, the journal aims to support the work of the Intergovernmental Panel for Climate Change (IPCC) and to provide governmental and non-governmental organizations with instantaneous access to continually emerging knowledge, including paradigm shifts and consensual views.