Plant species occupy distinct niches along a nitrogen‐to‐phosphorus (N:P) gradient, yet there is no general framework for belowground nutrient acquisition traits in relation to N or P limitation. We retrieved several belowground traits from databases, placed them in the “root economics space” framework, and linked these to a dataset of 991 plots in Eurasian herbaceous plant communities, containing plant species composition, aboveground community biomass and tissue N and P concentrations. Our results support that under increasing N:P ratio, belowground nutrient acquisition strategies shift from “fast” to “slow” and from “do‐it‐yourself” to “outsourcing”, with alternative “do‐it‐yourself” to “outsourcing” strategies at both ends of the spectrum. Species' mycorrhizal capacity patterns conflicted with root economics space predictions based on root diameter, suggesting evolutionary development of alternative strategies under P limitation. Further insight into belowground strategies along nutrient stoichiometry is crucial for understanding the high abundance of threatened plant species under P limitation.

中文翻译：

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欧亚草本植物群落中与养分限制相关的植物根系经济空间

植物物种沿着氮磷（N：P）梯度占据不同的生态位，但与氮或磷限制相关的地下养分获取性状没有通用框架。我们从数据库中检索了几个地下性状，将它们放入“根经济学空间”框架中，并将它们与欧亚草本植物群落的 991 个地块的数据集相关联，其中包含植物物种组成、地上群落生物量以及组织 N 和 P 浓度。我们的研究结果表明，在氮磷比不断增加的情况下，地下养分获取策略从“快”转向“慢”，从“自己动手”转向“外包”，并从“自己动手”转向“外包” ” 两端的策略。物种的菌根容量模式与基于根直径的根经济学空间预测相冲突，表明磷限制下替代策略的进化发展。进一步深入了解营养化学计量的地下策略对于了解磷限制下受威胁植物物种的高丰度至关重要。