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Damage assessment of hill dipterocarp forests subject to reduced impact logging guidelines in Sarawak, Malaysia

Titre :	Damage assessment of hill dipterocarp forests subject to reduced impact logging guidelines in Sarawak, Malaysia Ajouter au panier
Auteur(s) :	J.F. Butaud
Type de document :	Livre
Sujets :	GESTION DURABLE Malaisie ; Forêt tropicale humide ; Aménagement forestier MALAISIE
Résumé :	Global concern over exploitation of tropical rainforests has driven .governments of both tropical timber-producing and consurming countries to implement trials of Sustainable Forest Management systems. One component of such systems is Reduced Impact Logging (RIL) techniques. This report consists in the survey of the second RIL trial of the Malaysian-German Technical Cooperation Project in Sarawak. Conventional (CNV) and Reduced Impact logging were compared on the basis of a Post-Harvest Damage Assessment on soil and vegetation. CNV logging was characterized by a commercial volume per hectare of 55 m3 and more than 200 meters of skid-trails per hectare. The commercial volume extracted in RIL blocks averaged 30 m3 (45 170 of réduction) whereas trail density was only about 90 meters[...] Global concern over exploitation of tropical rainforests has driven .governments of both tropical timber-producing and consurming countries to implement trials of Sustainable Forest Management systems. One component of such systems is Reduced Impact Logging (RIL) techniques. This report consists in the survey of the second RIL trial of the Malaysian-German Technical Cooperation Project in Sarawak. Conventional (CNV) and Reduced Impact logging were compared on the basis of a Post-Harvest Damage Assessment on soil and vegetation. CNV logging was characterized by a commercial volume per hectare of 55 m3 and more than 200 meters of skid-trails per hectare. The commercial volume extracted in RIL blocks averaged 30 m3 (45 170 of réduction) whereas trail density was only about 90 meters per hectare (55 9o of réduction). Consequently, the area of soil exposure caused by crawler tractors was divided by two and the number of damaged trees dropped of 30 % (from 60 % in CNV to 40 % in RIL). These results could still be improved during the next trials by a better coopération between logging crews and supervisons. A proper and consistent training of both of them is also needed, mainly for felling techniques. Thus, to effectuate a step towards sustainability, logging companies have to accept the sacrifice of half their present production, which is expected to be compensated in long term by a -reater productivité of forest ecosystem. (Résumé scannérisé)
Editeur(s) :	Nancy [France] : Ecole Nationale du Génie Rural, des Eaux et des Forêts (ENGREF)
Date de publication :	1998
Format :	5 cartes; 30 graph., 5 plans; 10 tabl; 21 réf.-61 p.
Note(s) :	12 annexes
Langue(s) :	Anglais
Lien vers la notice :	https://infodoc.agroparistech.fr/index.php?lvl=notice_display&id=145714

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