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IBERDROLA FRANCE SAS

2024-2025_Orpierre (05)_RNA_France

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Photo du peuplement avant travaux de Régénération Naturelle Assistée

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Sorbier des oiseleurs

Pin noir

Pin laricio (Corse)

Cèdre de l'Atlas

Chêne pubescent

Hêtre commun

Érable sycomore

Alisier torminal

Merisier

Le projet RNA à Orpierre (05) concerne un massif de 278 ha composé en partie de plantations de pins noirs et de cèdres sur substrat calcaire, ainsi que de peuplements naturels variés (pins sylvestres, chênes pubescents, landes boisées, zones rocheuses et humides). L’objectif principal des travaux est de favoriser la régénération naturelle des feuillus sous les plantations de résineux et d’accélérer la remontée biologique dans cette forêt encore jeune. Un inventaire des arbres-habitats d’intérêt écologique sera réalisé afin d’identifier et préserver les individus les plus remarquables. De plus, les pins les plus vigoureux et bien conformés bénéficieront d’un accompagnement sylvicole pour améliorer la qualité du peuplement.

GOOD_HEALTH_AND_WELL_BEING

CLEAN_WATER_AND_SANITATION

DECENT_WORK_AND_ECONOMIC_GROWTH

CLIMATE_ACTION

LIFE_ON_LAND

Contributes to the mitigation of the greenhouse effect and influences precipitation patterns and the local microclimate.

Supports human well-being, by providing resources, income, education, and supporting recreation and heritage.

Preservation of local biodiversity by providing suitable habitats and resources.

Influences the quality and integrity of the soil-water system, and the cycling of water and nutrients.

The mountain forest is a partially wooded massif covering 278 hectares, including around one hundred hectares of first-generation black pine and cedar plantations around thirty years old, planted on a difficult substrate (hard limestone) at an altitude of 1,100 metres. Stands of Scots pine, downy oak, wooded moorland, rocky areas and wetlands, as well as mixed deciduous stands on steep slopes, make up the rest of the estate.

The Assisted Natural Regeneration project at Orpierre concerns a 278-hectare forest, made up partly of plantations of black pine and cedar on a limestone substrate, as well as a variety of natural stands (Scots pine, downy oak, wooded moorland, rocky and wet areas). The main aim of the work is to encourage the natural regeneration of deciduous trees beneath the softwood plantations and to accelerate biological recovery in this young forest. An inventory of trees and habitats of ecological interest will be carried out in order to identify and preserve the most remarkable individuals. In addition, the most vigorous and well-conformed pine trees will benefit from silvicultural support to improve the quality of the stand.

Bénéfices estimés des arbres plantés ou préservés