ESPECIES ORNAMENTALES EN TABASCO PARA EL ESTABLECIMIENTO EN TECHOS VERDES EXTENSIVOS EMPLEANDO LIRIO ACUÁTICO COMO SUSTRATO DE CRECIMIENTO.
ESPECIES ORNAMENTALES EN TABASCO PARA EL ESTABLECIMIENTO EN TECHOS VERDES EXTENSIVOS EMPLEANDO LIRIO ACUÁTICO COMO SUSTRATO DE CRECIMIENTO.
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DOI: https://doi.org/10.22533/at.ed.9734122419091
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Palavras-chave: azoteas verdes, trópico húmedo, lirio acuático
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Keywords: green roofs, humid tropics, water lily.
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Abstract: Green roofs are an ecological technology classified as an environmental strategy that helps sustainable development and climate change mitigation. They arise from the need to implement vegetation in urban areas with precipitous population growth and extensive urbanization. The proper selection of species is essential to obtain the benefits of green roofs. This work evaluated the potential of ornamental species commonly used in Tabasco, México, for their use in green roofs using water lily as growth substrate. The species used were: Portulaca grandiflora Hook, Zephyranthes sp. Herbert, Tradescantia spathacea and Tradescantia pallida, these were propagated in greenhouses, then acclimatized in the growth substrate and placed in experimental units of extensive green roofs in a building located in Villahermosa, Tabasco, Mexico. The physical and chemical characteristics of the substrate were determined at the beginning and end of the green roof growth test (pH, EC, WHC, apparent density, real density, porosity). The phenological variables analyzed were height, number of shoots, number of leaves, number of branches, and number of flowers. In the green roof units, the growth of the different species was determined through the initial and final dry biomass to calculate the Relative Growth Rate (RGR). During the propagation stage, the four species grew satisfactorily under greenhouse and environmental conditions; plants exhibited a considerable increase in their growth in the experimental units in the second stage, finding significant differences (P<0.05) among the species, highlighting Portulaca grandiflora Hook, with a final biomass of 23.4 g and a RCR of 0.0353 g g-1 d-1. It is concluded that the ornamental species Portulaca grandiflora Hook, Zephyranthes sp. Herbert, Tradescantia spathacea and Tradescantia pallida, can be used for the establishment of extensive green roofs in Tabasco, México, using water lily as a growth substrate.
- Erika Escalante-Espinosa
- Jennifer López-Arias
- Ildefonso, J. Díaz-Ramírez