Detection of asynchronies between climatic factors and underground phytomass production in semiarid pastures

  1. Gómez Gutiérrez, J. M. 1
  2. Barrera Mellado, I. 2
  3. Galindo Villardón, P. 2
  4. Pérez Fernández, M. A. 1
  1. 1 Department of Ecology. University of Salamanca. C/del Espejo s/n. 37008 Salamanca. SPAlN
  2. 2 Department of Biostatistic. University of Salamanca. C/ del Espejo s/n. 37008 Salamanca. SPAIN
Revista:
Pastos: Revista de la Sociedad Española para el Estudio de los Pastos

ISSN: 0210-1270

Any de publicació: 1994

Volum: 24

Número: 1

Pàgines: 33-46

Tipus: Article

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Altres publicacions en: Pastos: Revista de la Sociedad Española para el Estudio de los Pastos

Resum

The influences of the climatic variables on the fluctuations of biomass production in the underground organs of the herbaceous plants of semi-arid pastures are investigated. The study of the most influencing variables was carried out by factor analysis. The factor with the highest explicative power is a combination of the mean temperature 15 cm down in the soil, taken 30 days before collecting the samples and the maximun temperature taken 30, 20 and 25 days before sampling. The second factor is a combination of precipitations 30, 20, 25, 15 and 5 days before sampling. The third factor is the hours of sunshine 10,15 and 20 days before sampling.

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