Aplicación del modelo de clasificación ecológica de Holdridge para la República Argentina a partir del análisis espacial de datos
Ecological classification is a powerful tool in order to recognize not only the environmental heterogeneity but also to assess relationships between biotic and productive variables and between land management and conservation strategies. Nevertheless, Argentina and other countries, lack a detailed e...
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| Autores principales: | , , , , , |
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| Formato: | Objeto de conferencia |
| Lenguaje: | Español |
| Publicado: |
2016
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/60523 https://selperargentina2016.org/actas/ |
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| Sumario: | Ecological classification is a powerful tool in order to recognize not only the environmental heterogeneity but also to assess relationships between biotic and productive variables and between land management and conservation strategies. Nevertheless, Argentina and other countries, lack a detailed ecological zoning. In this work we present preliminary results of Holdridge Life Zones for Argentina. The Holdridge system identifies ecological units based on bioclimatic variables: biotemperature, precipitation, and the potential evapotranspiration/precipitation ratio, which show ecosystem processes and the ecophysiological responses of plants. We use INTA climatic information –temperature and precipitation– in raster format, validated with data obtained from National Weather Service. With this information we calculated the actual mean annual biotemperature, the mean annual potential evapotranspiration (according to Holdridge), the basal latitudinal biotemperature -based on the relation between elevation and temperature-, and the frost line that defines the boundary between warm temperate and subtropical belts. We integrated these data in the Holdridge system model. The Holdridge Life Zones for Argentina accounted for a total of 83 Life Zones, representing the five latitudinal belts (Boreal, Cool Temperate, Warm Temperate, Subtropical, and Tropical). The largest life zones include: Warm Temperate Dry Forest (433600 km2), Subtropical Dry Forest (276300 km2), Warm Temperate Thorn Steppe (227900 km2), and Warm Temperate Montane Desert Scrub (192600km2); and the smaller units include: Tropical Lower Montane Wet Forest, Warm Temperate Alpine Wet Tundra, and Subtropical Alpine Moist Tundra. The Tropical belt has the highest number of life zones. The new Life Zone map for Argentina is the basis for developing a detailed ecosystem mapping for the country and provides useful information for land management.The use of GIS, databases and spatial data analysis allows to develope new objective methodology for Holdridge Life Zones modeling. |
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