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| DOI | 10.1016/j.foreco.2020.118160 |
| Drought resistance traits predict tree species performance in a humid tropical landscape, but their importance shifts between managed cover types | |
| Cifuentes L.; Moreno Hurtado F.; Diego León-Peláez J.; Paz H. | |
| 发表日期 | 2020 |
| ISSN | 0378-1127 |
| 卷号 | 468 |
| 英文摘要 | In the humid tropics, the substitution of forest cover by open pastures generates hotter and dryer conditions limiting the establishment of native plants. In this context reforestation of pastures using fast-growing tree species is commonly used to improve the environmental conditions, however, contrary to expected this strategy may lead to drier soil conditions due to the elevated transpiration rates of large trees, overall generating landscape mosaics with high variation in light and water availability. Despite the high sensitivity of tree species from the humid tropics to drought, efforts to predict species performance in reforestation campaigns have been focused mostly on carbon gain traits, while ignoring the drought resistance traits. In this study we addressed the hypothesis that both carbon gain and drought resistance traits are good predictors of growth rate and survival of species under contrasting vegetation cover types in a managed landscape. To test this hypothesis, the growth and survival over 38 months, and 17 physiological and morphological leaf traits related to carbon economy and drought resistance were measured in ten tree species planted in pastures and tree plantations. Plantations showed higher soil water depletion than pastures and the relative growth rate and survival of species were higher in pastures. Carbon economy and drought resistance traits together predicted interspecific growth rate and survival; however, the importance of functional traits as predictors depended on the cover type. Carbon acquisition traits (Am and AFE) were the best predictors in pastures, while drought resistance traits (RWCtlp, LDMC and ε) had the lowest magnitude of interspecific variation, but were the best predictors in plantations. This suggests that, despite its restricted variation, drought tolerance traits may be of paramount importance in defining tree performance and long-term success of managed species in the humid tropics, particularly under fast-growing tree covertures. This study shows that soil water might act as a limiting factor on plant performance in managed landscapes in the humid tropics, and challenges the common assumption that using a low diversity of fast-growing and highly resource-demanding species is the best strategy to reforest abandoned pastures and improve the environmental conditions for other species. © 2020 Elsevier B.V. |
| 关键词 | AgronomyCarbonPlants (botany)ReforestationSoil moistureTropicsDrought resistanceDrought tolerancesEnvironmental conditionsFunctional traitsInterspecific variationsRelative growth rateTranspiration ratesWater availabilityDroughtdrought resistanceenvironmental conditionsforest covergrowthgrowth ratehumid tropicslandscapenative speciessoil watersurvivaltreetropical regionvegetation coverAgronomyCarbonDroughtReforestationResistanceSurvivalTreesTropics |
| 语种 | 英语 |
| 来源机构 | Forest Ecology and Management |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/132793 |
| 推荐引用方式 GB/T 7714 | Cifuentes L.,Moreno Hurtado F.,Diego León-Peláez J.,et al. Drought resistance traits predict tree species performance in a humid tropical landscape, but their importance shifts between managed cover types[J]. Forest Ecology and Management,2020,468. |
| APA | Cifuentes L.,Moreno Hurtado F.,Diego León-Peláez J.,&Paz H..(2020).Drought resistance traits predict tree species performance in a humid tropical landscape, but their importance shifts between managed cover types.,468. |
| MLA | Cifuentes L.,et al."Drought resistance traits predict tree species performance in a humid tropical landscape, but their importance shifts between managed cover types".468(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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