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十年来N和P的加法重塑了亚热带种植园树木中的多元素分配模式和网络相互作用

Juan Huang^1,2,3, Xi'an Cai^1,2,3, Runcheng Zhu^1,2,3

¹Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Guangzhou 510650, China.

Tree physiology

|December 16, 2025

概括

添加和会改变热带树的矿物元素及其关系. 长期添加营养素会改变组织度,简化元素网络,影响生态系统功能.

科学领域:

生态生态学生态生态学
植物生理学植物生理学
生物地质化学生物地质化学

背景情况:

(N) 沉积导致营养不平衡,特别是 (P) 限制,在热带生态系统.
和/或添加对热带树木中多矿物元素动态和组织特异度的影响尚不清楚.

研究的目的:

研究N和/或P添加对欧树 (Eucalyptus urophylla) 和白 (Acacia auriculiformis) 组织中矿物元素度的长期影响.
检查这些营养添加物如何改变热带树木内的元素间关系和相关性.

主要方法:

一个长达十年的实地实验,涉及N和/或P添加到两个热带种植园树种中.
对不同组织 (叶子,树枝,根) 中矿物元素度的分析.
统计检查元素相关性模式的变化.

主要成果:

长期的N添加维持了宏元素的稳定性,但改变了微元素 (例如,根Al/Fe在EU中增加,叶子Fe在AA中减少).
添加P和N+P导致P和Na增加,K减少,在两种物种中都有显著的叶子水平反应.
营养添加改变了元素相关性:N加强了S相互作用,P添加使P在AA中脱离,N+P添加简化了整体元素网络.

结论:

热带树木表现出矿物元素度的动态组织特异性调整,以应对N和P的丰富.
添加营养物质重新配置了元素之间的关系,可能会影响生态系统的结构和功能.
研究结果强调了全球变化对热带森林营养循环和弹性的复杂影响.

关键词:

合关系的合关系.矿物元素是矿物元素的组成部分.添加的补充是的添加.添加的方法是添加.

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