El papel del agua sobre la biomasa vegetal en la zona semiárida con clima mediterráneo de Chile 1

  1. Javier Lozano-Parra
  2. Carlos Lozano-Fondón
  3. Manuel Pulido
  4. Ramón García-Marín
Revue:
Revista de Geografía Norte Grande

ISSN: 0718-3402

Année de publication: 2018

Número: 71

Pages: 91-108

Type: Article

DOI: 10.4067/S0718-34022018000300091 DIALNET GOOGLE SCHOLAR lock_openDialnet editor

D'autres publications dans: Revista de Geografía Norte Grande

Résumé

The semi-arid Mediterranean ecosystems of Chile sustain high demographic rates and maintain very important economies related to the environmental productivity, although they strongly depend on water availability. Nevertheless, studies carried out on wa ter-limited environments and from an ecohydrological framework, are very scarce in the semi-arid areas of Chile. This study tries to define the role of water on herbaceous bio mass growth using equipment which monitored some key variables concerning to the water cycle and biomass dynamics with a high temporal resolution. Results showed that between 57% and 93% of total variance in biomass dynamics could be explained using only three variables related to hydrological cycle, such as rainfall, evapotranspiration and soil water content. We concluded that a change in the water cycle of these areas could threat the productivity and maintenance of these ecosystems.

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