Distribution des systèmes racinaires de chêne sessile et de fougère aigle en forêt tempérée

Abstract : A forest ecosystem includes over and under-story species that compete for resources, namely light, water and nutrients. In the context of climate change, it is advised to reduce tree standing volume to decrease water consumption. This by assuming that understory species, which will benefit from light increase, have a negligible influence on the soil water status. In order to characterize the competition between these two layers we studied the root system distribution of Quercus petraea and Pteridium aquilinum in a temperate forest of central France. Biomass data highlighted the existence of a phenomenon of root competition between oak and bracken affecting root distribution. It resulted in an increase of 20 % in oak fine roots in plots where bracken was suppressed. Thus, taking into account the understory vegetation in forest water balance seems unavoidable to define optimal and sustainable management practices.
Document type :
Master thesis
File URL :
http://docnum.univ-lorraine.fr/prive/BUS_M_2013_LAURENT_LISA.pdf
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https://hal.univ-lorraine.fr/hal-01778009
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Submitted on : Wednesday, April 25, 2018 - 12:11:16 PM
Last modification on : Thursday, April 26, 2018 - 1:15:52 AM

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  • HAL Id : hal-01778009, version 1

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Lisa Laurent. Distribution des systèmes racinaires de chêne sessile et de fougère aigle en forêt tempérée. Sciences de l'environnement. 2013. ⟨hal-01778009⟩

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