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Investigación Agraria

On-line version ISSN 2305-0683


QUEVEDO FERNANDEZ, María Laura et al. Economic valuations composition, structure and floristic diversity in a semi-deciduous mesoxerophytic forest of Schinopsis balansae Engl., Ecoregion Humid Chaco, Paraguay. Investig. Agrar. [online]. 2021, vol.23, n.2, pp.101-110. ISSN 2305-0683.

In 2006, efforts were launched towards the economic valuation of ecosystemic services provided by forests in Paraguay, this information is very useful for the implementation of public policies. This research sought to estimate the economic value of direct and indirect use of a semi-deciduous mesoxerophytic Schinopsis balansae Engl. Forest, Ecoregion Humid Chaco, Paraguay; detailing its composition, structure and floristic diversity by analyzing two Permanent Biodiversity Monitoring Plots of 1 ha each. In both, 1388 individuals were recorded with BHD ≥ 10 cm, belonging to 54 species, 1 morphospecies, 48 genera and 25 botanic families. Phyllostylon rhamnoides (J. Poiss.) Taub. was the species with higher Importance Value Index (39,20%). According to the Diversity Indexes, site 02 was the most diverse. To valuate the direct use of these sites, according to a census to 303 forestry industries, 13 species were selected as species with a market value for industrial use. The economic value of direct use goods for site 01 was 256,81 US$ ha-1 and for site 02 it was 1.562 US$ ha-1. Considering the forest management option, the value for site 02 was 124,52 US$/ha, while no commercial species in site 01 reached the established minimum felling diameter. The economic value of ecosystemic services of carbon reservoir for site 01 amounted to 129,47 US$ and for site 02 150,81 US$. These tangible values could help improve the regional forest valuation strategies.

Keywords : structural analysis; diversity indexes; permanent biodiversity monitoring plot; economic valuation.

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