气候变化领域集成服务门户(CCPortal): Drought resistance traits predict tree species performance in a humid tropical landscape, but their importance shifts between managed cover types

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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.
英文关键词	Environmental conditions; Functional traits; Relative growth rate; Tree survival; Tropical landscape; Water deficit
语种	英语
scopus关键词	Agronomy; Carbon; Plants (botany); Reforestation; Soil moisture; Tropics; Drought resistance; Drought tolerances; Environmental conditions; Functional traits; Interspecific variations; Relative growth rate; Transpiration rates; Water availability; Drought; drought resistance; environmental conditions; forest cover; growth; growth rate; humid tropics; landscape; native species; soil water; survival; tree; tropical region; vegetation cover; Agronomy; Carbon; Drought; Reforestation; Resistance; Survival; Trees; Tropics
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155256
作者单位	Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Antigua carretera a Pátzcuaro No. 8701. Col., San José de la Huerta, CP 58190 Morelia, Michoacán, Mexico; Universidad Nacional de Colombia, Sede Medellín, Facultad de Ciencias Agrarias, Departamento de Ciencias Forestales, Cra. 65 No. 59a-110, CP 050034 Medellín, Colombia; Grupo de Investigación en Restauración Ecológica de Tierras Degradadas en el Trópico, Universidad Nacional de Colombia, Sede Medellín, Cra. 65 No. 59a-110, CP 050034 Medellín, Colombia
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],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.Forest Ecology and Management,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".Forest Ecology and Management 468(2020).