Unasylva - No. 223

An international journal of forestry and forest industries - Vol. 57 2006/1

FAO - Food and Agriculture Organization of the United Nations

Editor: A. Perlis
Editorial Advisory Board Forestry Department:
F. Castañeda, R. Czudek, T. Hofer, D. Kneeland, J.P. Koyo, A. Perlis, L. Russo, M. Uemoto, T. Vahanen, M.L. Wilkie

Emeritus Advisers:
J. Ball, I.J. Bourke, C. Palmberg-Lerche

Regional Advisers:
H. Abdel Nour, C. Carneiro, P. Durst, P. Koné, K. Prins

Unasylva is published in English, French and Spanish. Starting in 2006, payment is no longer required. Free subscriptions can be obtained by sending an e-mail to [email protected]. Subscription requests from institutions (e.g. libraries, companies, organizations, universities) rather than individuals are preferred to make the journal accessible to more readers.

All issues of Unasylva are available online free of charge at www.fao.org/forestry/unasylva. Comments and queries are welcome: [email protected]

Reproduction and dissemination of material in this publication for educational or other non-commercial purposes are authorized without any prior written permission from the copyright holders provided the source is fully acknowledged. Reproduction of material in this publication for resale or other commercial purposes is prohibited without written permission of the Chief, Publishing Management Service, Information Division, FAO.

Articles express the views of their authors, not necessarily those of FAO.

Designations employed and presentation of material do not imply the expression of any opinion on the part of FAO concerning the legal or development status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.

The FAO publications reviewed in Unasylva may be ordered from any of the FAO sales agents listed on the inside back cover. FAO will process orders from countries where there are no sales agents. Contact the Sales and Marketing Group, Information Division, FAO, Viale delle Terme di Caracalla, 00100 Rome, Italy.

Tel. (39) 06 57051;
Fax (39) 06 5705 3360;
Telex 625852/625853/610181 FAO I
E-mail: [email protected]
Web site: www.fao.org

Cover photo: Buddleja incana forest, Atapo Quichalán , Ecuador
FAO/CFU000796/R. Faidutti

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