Leaf nutrient resorption is one of the important mechanisms for nutrient conservation in plants. Element stoichiometry is crucial to characterizing nutrient limitations and terrestrial ecosystem function. Here, we use nitrogen (N) and phosphorus (P) resorption efficiencies (NRE and PRE) and their stoichiometry to evaluate the response patterns of leaf nutrient resorption efficiency (NuRE) to plant functional groups, species traits, climate, and soil nutrients on the global scale. In light of the findings from the global data set of published literature on N and P resorption by woody plants, we revisit the commonly held views that: The strong N fixation ability of N-fixers weakened the NRE, which was consistent with the general views. The NuRE was linearly negatively correlated with plant growth rate. The higher NuRE of evergreen species than deciduous plants revealed how leaf life span constrains nutrient conservation. From the perspective of NRE, PRE and their ratios, woody plants were limited by P in the tropical zone and the limiting nutrient gradually transformed into N in the temperate zone (23.43–66.57°). The NuRE of woody plants in the frigid zone was the largest than that of others implied that low temperature may limit the nutrient absorption by plant roots, thereby enhancing the retranslocation of nutrients by senesced leaves. Furthermore, Akaike weights analysis found that mean annual precipitation (MAP) and temperature (MAT), N-fixers, soil nutrients, and leaf life span have significant effects on nutrient resorption patterns, sequentially. Overall, these results showed that the plasticity of plant nutrient resorption patterns was strongly sensitive to plant functional groups and soil nutrients, but the regularity of NuRE on a global scale was controlled by temperature and precipitation. And the resorption stoichiometry pattern better interprets plant nutrient limitation and the synergy effect of N and P in plant and soil on multiple scales.

叶片养分吸收是植物养分保存的重要机制之一。元素化学计量对于表征养分限制和陆地生态系统功能至关重要。在这里，我们使用氮（N）和磷（P）的吸收效率（NRE和PRE）以及它们的化学计量关系来评估叶片养分吸收效率（NuRE）对植物功能群，物种特征，气候和土壤养分的响应模式。全球规模。根据已发表文献中有关木本植物氮和磷吸收的全球数据的发现，我们重新审视以下常用观点：N-固氮剂强大的N固氮能力削弱了NRE，这与一般观点一致。 。NuRE与植物生长率呈线性负相关。常绿树种的NuRE高于落叶植物，表明叶片寿命如何限制养分保存。从NRE，PRE及其比例的角度来看，木本植物在热带地区受到磷的限制，而在温带地区（23.43–66.57°），有限的养分逐渐转化为氮。寒带地区木本植物的NuRE最大，这暗示着低温可能限制植物根系对养分的吸收，从而增强了叶片衰老时养分的重新分配。此外，Akaike权重分析发现，平均年降水量（MAP）和温度（MAT），固氮剂，土壤养分和叶片寿命对养分吸收模式具有显着影响。全面的，这些结果表明，植物养分吸收模式的可塑性对植物官能团和土壤养分非常敏感，但在全球范围内，NuRE的规律性受温度和降水的控制。吸收化学计量模式更好地解释了植物养分的限制以及植物和土壤中氮和磷在多个尺度上的协同作用。