Opportunities and Challenges for Sustainable Production and Marketing Edited by Lemenih Mulugeta and Habtemariam Kassa of Gums and Resins in Ethiopia
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Opportunities and challenges for sustainable production and marketing of gums and resins in Ethiopia Opportunities and challenges for sustainable production marketing Opportunities and challenges for sustainable production and marketing Edited by Mulugeta Lemenih and Habtemariam Kassa and Habtemariam Mulugeta Lemenih by Edited of gums and resins in Ethiopia Editors Mulugeta Lemenih Habtemariam Kassa Opportunities and challenges for sustainable production and marketing of gums and resins in Ethiopia Editors Mulugeta Lemenih Habtemariam Kassa © 2011 Center for International Forestry Research All rights reserved ISBN 978-602-8693-57-8 Lemenih, M. and Kassa, H. (eds) 2011 Opportunities and challenges for sustainable production and marketing of gums and resins in Ethiopia. CIFOR, Bogor, Indonesia Photographs by Mulugeta Lemenih or Habtemariam Kassa, unless otherwise indicated. CIFOR Jl. CIFOR, Situ Gede Bogor Barat 16115 Indonesia T +62 (251) 8622-622 F +62 (251) 8622-100 E [email protected] www.cifor.cgiar.org Any views expressed in this publication are those of the authors. They do not necessarily represent the views of CIFOR, the authors’ institutions or the financial sponsors of this publication. Contents Abbreviations vi Acknowledgements vii Foreword viii 1 Challenges and forest-based opportunities in the drylands of Ethiopia 1 1.1 Drylands of Ethiopia 1 1.2 Challenges facing the drylands of Ethiopia 2 1.3 Opportunities for forest-based enterprises 4 1.4 Dryland vegetation resources of Ethiopia 6 2 Resource base of gums and resins and challenges of productivity 13 2.1 Introduction 13 2.2 Gum- and resin-producing species and their spatial coverage 13 2.3 Yield and productivity 24 2.4 Economic and ecological significance 27 2.5 Degradation of gum and resin resources and major causes 33 2.6 Options for restoration 40 3 Production, handling and quality control 47 3.1 Introduction 47 3.2 History of gum and resin production in Ethiopia 47 3.3 Production processes and gum handling 48 3.4 Post-harvest handling 55 3.5 Quality of gums and resins 56 3.6 Quality control 63 3.7 Challenges related to production and supply 64 4 Value-added processing and marketing of gums and resins 69 4.1 Introduction 69 4.2 Industrial application and local use of gums and resins 70 4.3 Value-added processing and implications 74 4.4 Advantages of value-added processing 75 4.5 Trade and marketing of gums and resins 79 4.6 Marketing chain 81 5 Challenges, opportunities and actions for sustainable gum and resin production 87 5.1 Challenges and opportunities 87 5.2 Future actions 91 List of tables and figures Tables 1.1 Estimated extent of drylands in Ethiopia 1 2.1 Common and potential gums and resins producing Acacia, Commiphora 14 and Boswellia species found in the drylands of Ethiopia 2.2 Estimated extent of area containing vegetation with gum- and resin- 16 producing species in Ethiopia by regional state 2.3 Commercial gums and resins with botanical sources and local 16 designations 2.4 Gum- and incense-producing tree species found in the Borana area 22 2.5 Estimated potential and annual production of gum and incense in 25 Ethiopia 2.6 Natural gums (gum olibanum, gum arabic, myrrh/opoponax) exported 25 from Ethiopia by various enterprises during the past 15 years 2.7 Comparison of actual and potential gum and resin production in 26 Ethiopia, based on figures for 2003/04 2.8 Local uses of gums and resins and their source species in lowland areas 30 of Ethiopia 3.1 Grades of gum olibanum (Tigray type) 55 3.2 Data on the physico-chemical properties of gum arabic from A. senegal 58 from the Central Rift Valley, Ethiopia 3.3 Assessment of gum arabic from Central Rift Valley of Ethiopia against 59 international specifications and gums from other sources 3.4 Composition (%) of the essential oils of different grades (G-1A to G-5) of 62 frankincense from B. papyrifera 4.1 Major world and African exporters of gum arabic in 2005 76 4.2 Major world and African exporters of gums and resins other than gum 77 arabic in 2005 4.3 Natural gum and resin exports from Ethiopia by destination in 2005/06 78 Ethiopian Fiscal Year 4.4 Global imports of gum arabic and other gums and resins (‘natural 80 gums’) in 2006 4.5 Minimum, maximum and average selling prices (Birr/quintal) of 80 different products by main players Figures 1.1 Examples of dry afromontane forests in Ethiopia 7 1.2 Combretum–Terminalia (broad-leaved deciduous) woodlands dominated 7 by B. papyrifera species (a) during the rainy season and (b) during the dry season in the western lowlands of Ethiopia (Metema) 1.3 Acacia–Commiphora (small-leaved deciduous) dryland forest dominated 8 by Commiphora and Boswellia species in the southeastern and northeastern parts of Ethiopia 1.4 Semi-desert vegetation with scattered Commiphora and other species in 10 northeastern Ethiopia (Afar) 2.1 Some of the gum- and incense-producing species in the woodlands 15 of Ethiopia 2.2 (a) White Tigray type incense of various grades obtained from 17 B. papyrifera, and (b) black Borana incense obtained from B. neglecta 2.3 (a) True myrrh from C. myrrha and (b) opoponax from C. guidotti species 18 2.4 (a) Gum arabic from A. senegal var. senegal and (b) var. kerensis 19 2.5 Population structure of A. senegal at 2 contrasting sites in Central Rift 21 Valley of Ethiopia: (a) protected and (b) farmland 2.6 Population structure of B. papyrifera species in Metema, Ethiopia: 21 (a) during the rainy season and (b) during the dry season 2.7 Diameter class distribution of 3 gum- and resin-producing species in 23 Borana showing impacts of human disturbances on population structure 2.8 Women sorting and grading gums and resins 28 2.9 Population structure of B. papyrifera in Metema district, northwestern 33 Ethiopia (The predicted curve was derived using the Weibull distribution function) 2.10 Settlement parcels and agricultural fields in the midst of Boswellia forest 35 in Metema district 2.11 Change in land cover/land use over a 15-year period (percentage) 36 2.12 High livestock populations in the dryland forests of (a) Metema and (b) 37 Borana lowlands, resulting in overgrazing 2.13 Dry forests of Metema district damaged by fire 38 2.14 Signs of damage from improper tapping 39 2.15 Vegetative propagation of B. papyrifera (top) and planted stand of 41 A. senegal (bottom) 3.1 Historical development of commercial gum and resin production 48 in Ethiopia 3.2 (a) Two of the most commonly used tapping tools (mingaf and sonke) 49 and (b) tapping an incense tree 3.3 Solidifying tear of frankincense after artificial wounding of B. papyrifera 49 3.4 Tapping of B. papyrifera after 1 year (left), 2 years (centre) and more than 50 2 years (right) 3.5 Picking of incense tears from stems after maturity and collection vessels 50 used in the north 3.6 (a) Naturally oozing gum of A. senegal and (b) incense from B. neglecta 51 3.7 (a) Children collecting gum and incense and (b) collection vessel 53 3.8 Evolution of gum and resin exploitation systems in 3 sites in Ethiopia 54 3.9 Shades constructed for incense seasoning at or near production sites 55 3.10 (a) Commonly used collection vessels and (b) transportation sacks 63 Abbreviations ADA Austrian Development Agency ASAL Arid and semi-arid land masl Metres above sea level BP British Pharmacopoeia CBC Convention on Biodiversity Conservation CCD Convention to Combat Desertification CIFOR Center for International Forestry Research CRV Central Rift Valley of Ethiopia DBH Diameter at breast height EC Ethiopian calendar EFAP Ethiopian Forestry Action Program EFY Ethiopian fiscal year (from 7 July to 6 July) EIAR Ethiopian Institute of Agricultural Research FAO Food and Agricultural Organization of the United Nations FRC Forest Research Centre IP International Pharmacopeia IPCC Intergovernmental Panel for Climate Change JECFA Joint Expert Committee for Food Additives MOARD Ministry of Agriculture and Rural Development NCSS National Conservation Strategy Secretariat NGARA Network for Natural Gums and Resins in Africa NGO Nongovernmental organisation NGPME Natural Gum Processing and Marketing Enterprise NTFP Non-timber forest product P Precipitation PASDEP Plan for Accelerated and Sustainable Development to End Poverty PET Potential evapotranspiration TLU Tropical livestock units UNFCCC United Nations Framework Convention on Climate Change USD United States dollar USP United States Pharmacopeia WHO World Health Organization Acknowledgements We would like to thank the Swedish International Development Cooperation Agency (Sida) for financing CIFOR’s dry forest project in Ethiopia (2007-2009), which led to the compilation of an earlier version of this publication. We gratefully acknowledge the Austrian Development Agency (ADA) for financing CIFOR’s ongoing community forestry project in Ethiopia. ADA’s support has enabled us to revise, edit, print and distribute this publication to users. Thanks are also due to all those who contributed as authors. Unless indicated otherwise, all photographs were contributed by the editors. Foreword Ethiopia has widely differing agro-ecological zones, commonly classified into highlands – areas above 1500 metres above sea level – and lowlands, those below. Arid and semi-arid lands (ASALs), a class of drylands, are important in both the highlands and the lowlands of Ethiopia. These areas are poverty- stricken and largely food insecure, despite being endowed with resources that could provide alternative and sustainable livelihoods if they were properly exploited and developed. Vegetation in Ethiopia’s ASALs includes diverse plant species that produce commercially important oleo-gum resins such as gum arabic, frankincense, myrrh and opoponax. These products have been traded both locally and internationally for centuries and make a significant contribution to the national and local economies.