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在中国北部干旱地区的草本植物中,气候驱动的生物质分配模式

Ya Hu^1,2, Zhaobin Song^1,2, Xiangyun Li³

¹State Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Urat Desert-grassland Research Station, Northwest Institute of Eco-Environment and Resources, the Chinese Academy of Sciences, Lanzhou, 730000, China.

Journal of integrative plant biology

|November 25, 2025

概括

在温带和高山旱地之间,生物质分配策略有所不同. 温带干旱地区遵循全米分区理论 (APT),而高山地区遵循最佳分区理论 (OPT),由气候和社区结构驱动.

科学领域:

生态生态学生态生态学
全球变化生物学
植物生理学植物生理学

背景情况:

生物质的分配是预测生态系统对全球变化的反应的关键.
最佳分区理论 (OPT) 和全度分区理论 (APT) 为生物质分配模式提供了对比的解释.
了解不同干地生态系统中的生物群特定策略至关重要.

研究的目的:

调查温带和高山干旱地区的根:射出比 (R/S) 模式.
确定R/S分配是否在这些生物群中遵循OPT或APT.
确定生物质分配策略的环境驱动因素.

主要方法:

在中国北部温带和高山干旱地区进行了120个地点的实地研究.
分析了与植物群体大小和环境因素相关的根:芽比 (R/S).
将分配模式与OPT和APT的预测进行了比较.

主要成果:

温带干旱地区的R/S比阿尔卑斯山地区低.
在温带干旱地区,R/S以社区规模 (APT) 计量,间接受到土壤因素的影响.
在阿尔卑斯山的干旱地区,R/S独立于社区规模,与温度 (OPT) 直接相关.

结论:

气候制度推动了干旱地区的替代生物质分配策略.
功能性社区结构可能会影响战略分配的能力.
研究结果为气候变化下的植被反应和干旱土地恢复提供了预测框架.

关键词:

全米分区理论的分区理论生物质分配的生物质分配.气候变化气候变化气候变化最优分区理论最优分区理论根:射击比率的比率.

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