Tree mixture effects on aboveground nutrient pools of trees in an experimental plantation in Panama
Tree mixture effects on aboveground nutrient pools of trees in an experimental plantation in Panama
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DOI：
10.1007/s11104-009-9997-x
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发表时间：
2010-01-01
期刊：
影响因子：
4.9
通讯作者：
Wilcke, Wolfgang
中科院分区：
文献类型：
--
作者：
Oelmann, Yvonne;Potvin, Catherine;Wilcke, Wolfgang
由于养分的互补利用，混合种植园可能有助于土地的可持续利用。我们的目标是评估巴拿马实验种植园中五种本土树种的养分经济及其对不同邻近树木的反应。在我们的研究中，H. crepitans 是营养效率最低的树种。 H. crepitans 在混合物中产生的生物量比单一栽培少，而 Cedrela odorata（营养效率最高的物种）产生更多的生物量，与茎生长速率无关，因为它们在混合物中比单一栽培获得更多的养分。与单一栽培相比，三种物种混合物增加了枝条和茎中的平均 Ca 浓度，并增加了地上生物量中的 N、P、K、Ca 和 Mg 储存量，表明资源吸收具有互补性。我们的研究结果强调，在设计造林用树木混合物时，需要适当考虑物种特定的营养需求和物种相互作用。
Mixed plantations might contribute to sustainable land use because of complementary nutrient use. Our objective was to assess the nutrient economy of five native tree species and their response to different neighbor trees in an experimental plantation in Panama. In our study, H. crepitans was the least nutrient efficient tree species. H. crepitans produced less biomass in mixtures than in monocultures while Cedrela odorata - the most nutrient efficient species - produced more biomass independent of stem growth rates because they acquired more nutrients in mixtures than in monocultures.Three-species mixtures had increased mean Ca concentrations in branches and stems and increased N, P, K, Ca, and Mg storage in aboveground biomass compared to monocultures suggesting complementary resource uptake. Our results highlight the need to properly consider species-specific nutrient requirements and species interactions when designing tree mixtures for afforestation.