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La diversité végétale à l’échelle de l’exploitation en fonction du chargement dans un système bovin allaitant du Massif Central

Abstract : There are many references concerning the effects of farm management on bio-diversity on the field scale, but few studies tackle this problem on the scale of a farm. The present work studies the plant diversity on suckling farms in the upland pastures of northern Cantal. The aim of the study was to determine the level of diversity according to the stocking rate at the field level and at the farm level, and to detect any relationship between the utilization of a pasture and its diversity. Botanical relevés were drawn per facies on the fields of 4 farms (with stocking rates from 0.7 to 1.2 LU/ha), in order to estimate the specific diversity and the composition of the various functional types of grasses. On the field and the farm scales, the specific diversity increases when the stocking rate diminishes, but the range of diversities within fields is largest with intermediate stocking rates. The functional types of grasses found in the pastures were compared to the stocking rates and the farming practices. On grazed pastures, the observed greater specific diversity appears to be linked to the presence of several facies and to a lesser input of mineral nitrogen equivalent than on meadows.
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https://hal.inrae.fr/hal-02653999
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Submitted on : Friday, May 29, 2020 - 9:20:50 PM
Last modification on : Tuesday, April 13, 2021 - 9:10:02 AM

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  • HAL Id : hal-02653999, version 1
  • PRODINRA : 455293

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Anne Farruggia, Bertrand Dumont, Pierre Loiseau, René Baumont, Magali Jouven. La diversité végétale à l’échelle de l’exploitation en fonction du chargement dans un système bovin allaitant du Massif Central. Fourrages, Association Française pour la Production Fourragère, 2006, 188, pp.477-493. ⟨hal-02653999⟩

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