植物功能组对土壤功能的影响比种植密度更强:用盆栽实验进行检查

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Huan Jiao^1,2,3, Zhenrui Cao¹, Lin Gong¹

¹College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, China.

Frontiers in plant science

|October 8, 2025

概括

植物功能群 (PFG) 显著影响土壤功能,而不是植物密度. 豆类和C3草对特定的土壤功能和生物质产生了最强烈的影响,突出了PFG在生态系统动态中的重要性.

科学领域:

生态生态学生态生态学
土壤科学土壤科学
植物社区动态植物社区动态

背景情况:

植物功能组 (PFG) 和植物密度是植物社区动态的关键驱动因素.
了解它们对生态系统功能的综合影响对于生态预测和管理至关重要.
以前的分析还没有完全阐明 PFG 和植物密度对生态系统功能的主要和相互作用影响.

研究的目的:

评估不同 PFG 和种植密度对植物生物质和土壤功能的影响.
分析PFG和植物密度对土壤营养,酶活性,微生物死体碳和矿化的主要和相互作用的影响.
为了比较树根圈和散土中的效应.

主要方法:

一个盆栽实验使用了四种PFG (C3草,C4草,,豆类) 和六种种植密度梯度.
测量了植物生物质,土壤营养素,细胞外酶活性,微生物死体碳和矿化率.
在根球和散土之间进行不同的测量.

主要成果:

土壤功能指标通常随着种植密度的增加而增加,在树枝球土壤中观察到的效应更大.
发现PFG和植物密度之间存在显著的相互作用,在不同组之间产生不同的影响.
豆类强烈影响了土壤的多功能性和循环,而C3草则影响了根球酶活动.

结论:

植物的功能组身份对土壤功能的影响比种植密度更大.
PFG在调节生态系统功能的过程中发挥着至关重要的作用,特别是在树根圈.
研究结果强调了考虑PFG成分的重要性,以预测对环境变化的生态反应.

关键词:

植物的功能组植物功能组种植密度种植密度种植密度土壤酶活动土壤酶活动土壤微生物死体碳质碳土壤多功能性的多功能性土壤矿化土壤矿化.

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