De quelle manière les pratiques agricoles et la densité d'infrastructures agroécologiques influencent la diversité végétale des prairies permanentes en Champagne Ardenne et Lorraine ?

Abstract : For the past 50 years, the transformation of agriculture by increasing productivity has lead to a significant reduction of the area of permanent grassland and semi-natural element. The result is a considerable loss of biodiversity. In this report, we analyze the effect of agricultural practices and density of semi-natural element on plant diversity in two regions which are Champagne-Ardenne and Lorraine. This study has been conducted with a gradient of agricultural practices and density variation in semi-natural element translated through different agricultural operating systems, different plots, and the center and border stations systems. Functional traits and species diversity indices of plants were calculated. In plots where agricultural practices are low, species richness would tend to increase. For plot containing a higher density of semi-natural element, there is a higher diversity of species in the center of the plot than in the edge of the field and a stronger SLA next to the semi-natural element. In the different operating systems, an increase in the intensity of practices causes an increase in plant height, maybe the result of strong growth because of strong competition and fertilization.
Document type :
Master thesis
File URL :
http://docnum.univ-lorraine.fr/prive/BUS_M_2013_BRESSON_CAROLINE.pdf
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https://hal.univ-lorraine.fr/hal-01777828
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Submitted on : Wednesday, April 25, 2018 - 10:20:33 AM
Last modification on : Friday, September 14, 2018 - 1:13:51 AM

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Caroline Bresson. De quelle manière les pratiques agricoles et la densité d'infrastructures agroécologiques influencent la diversité végétale des prairies permanentes en Champagne Ardenne et Lorraine ?. Sciences de l'environnement. 2013. ⟨hal-01777828⟩

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