The Boreal Mixedwood Forest is defined and a rationale is pre-L'auteur donne une difinition de la for& mClangCe nordique sented for proactive mixedwood management in Ontario. The extent, et prCsente la logique n6cessaire B un amknagement proactif de persistence, inherent biodiversity, ecological sustainability and la forst mClangCe de l'ontario. L'Ctendue, la persistance, la bioincreasing economic value of the Boreal Mixedwood Forest diversit6 inhkrente, la durabilitk Bcologique et la valeur konomique justify intentional management for mixed-species crops on sans cesse croissante de la fast rnClang6e nordique justifient Yam& appropriate sites. Although Ontario has no w t i o n of boreal mixednagement intentionnel des peuplements m6langCs Ctablis sur wood management, attitudes are changing as the province seeks des stations approprikes. M&me si I'Ontario n'a pas de tradition to reduce the cost of forest renewal and adopt sustainable, ecosysCtablie en amknagement des forsts m6langCes borkales, les attitem-based practices. Obstacles to managing the mixedwood fortude~ changent a mesure la province cherche r6duh-e les coats est are discussed and recommendations for promoting this du renouvellement des for& et adopter des pratiques durables able resource are presented.basCes sur les Ccosystbmes. L'auteur prCsente les obstacles s'opposant B l'amknagement de la for& m6langCe et discute des K~~ *rnative foresby diversity, economic recommandations concernant la promotion de cette ressource de efits, integrated resource management,