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Primary moist closed tropical forest management in a constraint environment: PMG-ACRE understory harvesting system

by Reis Filho, O.
Publisher: Acre (Brasil) 1992Description: 28 p.Subject(s): UTILIZACION DE LA TIERRA | SOSTENIBILIDAD | BIODIVERSIDAD | REGENERACION NATURAL | ASPECTOS SOCIOECONOMICOS | APROVECHAMIENTO FORESTAL | BRASIL | LAND USE | SUSTAINABILITY | BIODIVERSITY | NATURAL REGENERATION | BRAZIL | UTILISATION DES TERRES | DURABILITE | BIODIVERSITE | REGENERATION NATURELLE | BRESILSummary: The primary tropical forest, with its distinctive extensive land cover and high biotic diversity, is not amenable to traditional systems of forest management. A management system suitable to exploit this forest on a sutainable basis and in an environment of restraints imposed by forest diversity, environmental components, ecological economics, and rural community welfare among others has been so far an elusive proposition. The PMG-Acre (Photomicrogap-Acre) system, the subject of this paper is a management system specifically structured to manage primary closed lowland tropical moist forests on a sustainable basis addressing simultaneously the sustainabilities of the ecological diversity, ecological economics, social welfare and environmental components as follows: 1) ecological sustainability, this is achieved through the manipulation of: a) main biological components (emergent and canopy trees; understory juvenile trees; seeds and seedlings; in-forest daylight intensity and quality; size of both edge and fragmentation of the exploitable area) b) tree harvesting systems appropriated to handle logs without both compacting the soil or damaging standing forest vegetation. 2) Economic sustainability, this is through the optimization of the following components: forest valuation; natural forest regeneration; forest products industrialization. 3) Social welfare sustainability, this is met by an appropriate rural society structure based on: tree farm size; agrosilvopastoral system; rural cooperative system.
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Bib. p. 22-28. Sum. (En)

The primary tropical forest, with its distinctive extensive land cover and high biotic diversity, is not amenable to traditional systems of forest management. A management system suitable to exploit this forest on a sutainable basis and in an environment of restraints imposed by forest diversity, environmental components, ecological economics, and rural community welfare among others has been so far an elusive proposition. The PMG-Acre (Photomicrogap-Acre) system, the subject of this paper is a management system specifically structured to manage primary closed lowland tropical moist forests on a sustainable basis addressing simultaneously the sustainabilities of the ecological diversity, ecological economics, social welfare and environmental components as follows: 1) ecological sustainability, this is achieved through the manipulation of: a) main biological components (emergent and canopy trees; understory juvenile trees; seeds and seedlings; in-forest daylight intensity and quality; size of both edge and fragmentation of the exploitable area) b) tree harvesting systems appropriated to handle logs without both compacting the soil or damaging standing forest vegetation. 2) Economic sustainability, this is through the optimization of the following components: forest valuation; natural forest regeneration; forest products industrialization. 3) Social welfare sustainability, this is met by an appropriate rural society structure based on: tree farm size; agrosilvopastoral system; rural cooperative system.

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