树木对二氧化碳浓度升高的生理生态响应

王兆国; 王传宽

doi:10.12356/j.2096-8884.2021-0023

树木对二氧化碳浓度升高的生理生态响应

doi: 10.12356/j.2096-8884.2021-0023

王兆国,
王传宽^,

东北林业大学生态研究中心，黑龙江哈尔滨 150040

基金项目: 国家重点研发项目（2016YFD0600201）

详细信息

作者简介:
王兆国：E-mail: 466735586@qq.com

通讯作者:
E-mail: Wangck-cf@nefu.edu.cn

中图分类号: Q945.79
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- 被引次数: 0
出版历程
- 收稿日期: 2021-10-14
- 录用日期: 2021-12-01
- 网络出版日期: 2022-01-17
- 刊出日期: 2022-01-17

Tree Ecophysiological Responses to Elevated Carbon Dioxide Concentration

Zhaoguo WANG,
Chuankuan WANG^,

Center for Ecological Research, Northeast Forestry University, Harbin 150040, Heilongjiang, China

摘要

摘要: 大气CO₂浓度升高（eCO₂）及其引发的气候暖化、降水格局改变等，对陆地生态系统服务功能和社会经济可持续发展产生重大影响。树木对eCO₂的生理生态响应，将通过改变植被生产力和森林碳汇功能等，在减缓全球eCO₂趋势和气候变化中发挥着重要作用。因此，全面理解并准确评估树木生理生态过程对eCO₂的响应和反馈，可为应对全球和区域气候变化、进行森林“碳中和”决策等提供科学依据。围绕树木对eCO₂的生理生态响应，综述eCO₂对树木光合作用、呼吸作用、非结构性碳水化合物分配、叶片性状、树木生长和碳氮交互作用等的影响；然后评述eCO₂与氮沉降、增温、干旱等全球变化因子对树木生理生态过程的联合影响；最后提出该领域亟待解决的3个科学问题：加强研究eCO₂对树木自养呼吸的影响及其作用机理，探索eCO₂背景下树木—微生物—土壤养分的相互作用关系，通过多因子控制实验综合探究eCO₂、氮沉降、增温、降水格局改变等对树木生理生态的联合影响。
- CO₂浓度升高 /
- 全球变化 /
- 气孔导度 /
- 生长 /
- 碳代谢 /
- 氮利用
Abstract: Elevated CO₂ concentration (eCO₂) in the atmosphere, coupled with the induced climate warming and variations of precipitation patterns, has severely impacted terrestrial ecosystem services and socioeconomic sustainability. Tree ecophysiological responses to eCO₂ have played an important role in the mitigation of eCO₂ and climate changes via modifying vegetation productivity and forest carbon sequestration. Therefore, comprehensive understanding and accurate evaluation of tree ecophysiological responses and feedbacks to eCO₂ can provide scientific bases for the policy-making in climate change adaptation and C neutrality. In this review, we synthesized effects of eCO₂ on tree C metabolism (e.g., photosynthesis, respiration, nonstructural carbohydrates allocation), leaf traits (e.g., stomatal conductance, leaf area, phenology), tree growth, and C-nitrogen (N) interactions. Then we discussed interactions between eCO₂ and other global change factors (e.g., N deposition, warming, drought) on tree ecophysiological processes. Finally, we suggested three high-priority areas for future studies: to explore effects of eCO₂ on tree autotrophic respiration and the underlying mechanisms; to understand interactive responses tree, microorganisms and soil to eCO₂; and to assess effects of eCO₂ in combination with N deposition, warming, and changes in precipitation patterns on tree ecophysiology with multi-factor manipulation experiments.
- elevated CO₂ concentration /
- global change /
- stomatal conductance /
- tree growth /
- carbon metabolism /
- nitrogen use

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