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Revista Chapingo serie ciencias forestales y del ambiente
versión On-line ISSN 2007-4018versión impresa ISSN 2007-3828
Resumen
AVENDANO-YANEZ, Ma. de la Luz; QUIROZ-MARTINEZ, Salome; PEREZ-ELIZALDE, Sergio y LOPEZ-ORTIZ, Silvia. Litterfall from tropical dry forest trees scattered in pastures. Rev. Chapingo ser. cienc. for. ambient [online]. 2020, vol.26, n.3, pp.409-418. Epub 25-Jun-2021. ISSN 2007-4018. https://doi.org/10.5154/r.rchscfa.2019.12.092.
Introduction:
Scattered trees from tropical dry forests (TDF) deposit significant amounts of leaf litter into pasture soils.
Objective:
To estimate the litterfall production during the dry season by scattered Lysiloma acapulcense (Kunth) Benth. and Vachellia pennatula (Schltdl. & Cham.) Seigler & Ebinger trees in pastures.
Materials and methods:
Ten scattered trees of each species were selected from a 10-ha pasture, and litter was collected during the dry season (November to May) and sorted into fractions. Leaf litter biomass, nitrogen (N) and lignin (L) content, and the lignin-nitrogen (L/N) ratio were assessed. Leaf litterfall was modelled over an annual cycle using a double logistic model. Means from all variables were compared between species using a t-test.
Results and discussion:
Litter, nitrogen and lignin content were similar between species. However, the L/N ratio was significantly higher (P < 0.0001) in L. acapulcense (32.1) than in V. pennatula (21.3). The leaf litter model showed that the defoliation phase of L. acapulcense lasted 30 days longer than that of V. pennatula.
Conclusion:
The quantity and quality of leaf litter that scattered trees deposit in a pasture encourages the adoption of agroforestry systems, including tree species native to TDF.
Palabras llave : Vachellia pennatula; Lysiloma acapulcense; lignin; nitrogen; legume species.