Urban forests are conformed by a variable representation of native and exotic species. Because these species differ in the morpho-functional traits that possess, they may have a differential participation in the provision of ecosystem services in cities. Here, we compare ecosystem services inferred from morpho-functional traits of native and exotic tree species present in Santiago, Chile. Five traits associated with ecosystem services valuation (V_i) were scored (1 versus 0), and compared between native and exotic tree species, weighting those ecosystem services according to multi-criteria decision analysis procedure (MCDA). We found that native and exotic species did not have significant differences in the ecosystem services provided to urban dwellers (F = 1.2; P > 0.05); but these results were obtained when ecosystem services were not weighted according to their demand in Santiago. When weights were pondered, native species provided more ecosystem services than did exotic trees (F = 7.1; P < 0.008). Complementarily, we also found that the ecosystem services ranked for native and exotic species did not correlate with their spatial distribution (occupancy, O_i). These results highlight the need to use criteria based on ecosystem services to tree planting in Santiago, prioritizing native species because, in comparison to exotic ones, they provide more ecosystem services demanded city dwellers.

城市森林由本地和外来物种的可变代表构成。由于这些物种所拥有的形态功能特征不同，它们在提供城市生态系统服务方面的参与程度可能不同。在这里，我们比较了从智利圣地亚哥本地和外来树种的形态功能特征推断出的生态系统服务。对与生态系统服务估值 ( V _i )相关的五个特征进行评分（1 对 0），并在本地树种和外来树种之间进行比较，根据多标准决策分析程序 (MCDA) 对这些生态系统服务进行加权。我们发现本地和外来物种在为城市居民提供的生态系统服务方面没有显着差异（F  = 1.2；P  > 0.05）；但这些结果是在没有根据圣地亚哥的需求对生态系统服务进行加权时获得的。当考虑权重时，本地物种比外来树木提供更多的生态系统服务（F  = 7.1；P  < 0.008）。此外，我们还发现本地和外来物种的生态系统服务排名与其空间分布（占有率，O _i）无关。这些结果强调了在圣地亚哥植树时需要使用基于生态系统服务的标准，优先考虑本地物种，因为与外来物种相比，它们提供了更多城市居民所需的生态系统服务。