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首页> 外文期刊>Plant and Soil >Tree size and leaf traits determine the fertility island effect in Prosopis pallida dryland forest in Northern Peru
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Tree size and leaf traits determine the fertility island effect in Prosopis pallida dryland forest in Northern Peru

机译：树大小和叶状特征决定了秘鲁北部Prosopis Pallida Dryland森林的生育岛效应

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AimsTo assess the fertility island effect of Prosopis pallida in the North Peruvian dry forests and analyze if it is influenced by tree size and structural and/or chemical leaf traits.MethodsWe measured the soil nutrient concentrations under and outside the tree canopy in five populations that differ in mean annual temperature and annual rainfall in North Peru. We also measured tree size (height, stem diameter, and crown area), leaf structure (leaf mass per area (LMA) and leaf dry matter content), and leaf nutrient concentrations (C, N, P, Mn, Fe, Cu, and Zn).ResultsThe concentration of most soil nutrients was higher under the P. pallida canopy. Tree size affected positively the soil C, N, and P concentrations, while leaf structural traits such as LMA were negatively related to the soil C, N, and P concentrations. The relationships between the nutrient concentrations in the leaf and soil were only significant for P and Mn. The tree size effect was greater in those populations where the temperature was lower, suggesting the fertility island effect can be increased or weakened by climatic factors.ConclusionsP. pallida have a significant though limited fertility island effect regulated by plant traits and influenced by climatic factors.
机译：Aimsto评估Prosopis Pallida在北秘鲁干燥林中的生育岛的作用，分析它是受树尺寸和结构和/或化学叶状性质的影响。乙二醇在不同的群体中测量了树冠下的土壤营养浓度北秘鲁的平均年度温度和年降雨量。我们还测量了树尺寸（高度，茎直径和冠区），叶结构（叶片质量为每面积（LMA）和叶片干物质含量），以及叶营养浓度（C，N，P，Mn，Fe，Cu， Zn）。在P.Pallida冠层下，大多数土壤营养素的浓度较高。树大小积极地影响土壤C，N和P浓度，而LMA等叶结构性状与土壤C，N和P浓度负相关。叶片和土壤中的营养浓度之间的关系仅对P和Mn显着。在温度较低的那些群体中，树尺寸效应更大，表明生育岛效应可以增加或通过气候因子削弱.Conclusionsp。 Pallida虽然虽然受植物特征的有限生育岛的影响，但受气候因素的影响。

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