Determination of biomass accumulation in mixed belts of Salix,Corylus and Alnus species in combined food and energy production system |
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| Affiliation: | 1. Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Højbakkegård Allé 30, 2630 Taastrup, Denmark;2. Copenhagen Plant Science Centre, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark;1. Laboratory of Natural Product and Organic Synthesis, Department of Chemistry, Faculty of Sciences, University Mentouri-Constantine, Constantine 25000, Algeria;2. Centre Universitaire de Mesures et d''Analyses CUMA, Université de Lille 2, 3 rue du Professeur Laguesse, B.P. 83, 59006 Lille Cedex, Lille 2, France;3. Laboratoire de Pharmacognosie, EA4481, Faculté de Pharmacie, Université de Lille 2, 3 rue du Professeur Laguesse, B.P. 83, 59006 Lille Cedex, Lille 2, France;4. School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Quai Ernest-Ansermet 30, CH-1211 Geneva 4, Switzerland;1. Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno 74, 06121, Perugia, Italy;2. Dipartimento di Scienze delle Produzioni Vegetali Sostenibili, Università Cattolica del Sacro Cuore, Via E. Parmense 84, 29122, Piacenza, Italy;3. Departamento de Produccion Vexetal, Universidad de Santiago de Compostela, Escola Politecnica Superior, Campus Universitario, E-27002, Lugo, Spain;4. Dipartimento di Scienze Farmaceutiche, Università degli Studi di Perugia, Via Fabretti 48, 06123, Perugia, Italy;1. Agroecology Department, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK;2. Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Gogerddan, Aberystwyth, Ceredigion, SY23 3EE, UK;3. Sustainable Soils and Grassland Systems Department, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK;1. Gansu Key Laboratories of Arid and Crop Science, Crop Genetic and Germplasm Enhancement, Agronomy College, Gansu Agricultural University, Lanzhou 730070, China;2. International Potato Center (CIP), Headquarters P.O. Box 1558 Lima, Peru;3. Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences/Key Laboratory of Biology and Genetic Improvement of Tuber and Root Crop, Ministry of Agriculture, Zhongguancun South Street 12, Beijing 100081, China |
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| Abstract: | Given the energetic, demographic and the climatic challenges faced today, we designed a combined food and energy (CFE) production system integrating food, fodder and mixed belts of Salix, Alnus and Corylus sp. as bioenergy belts. The objective was to assess the shoot dry weight-stem diameter allometric relationship based on stem diameter at 10 (SD10) and 55 cm (SD55) from the shoot base in the mixed bioenergy belts. Allometric relations based on SD10 and SD55 explained 90–96% and 90–98% of the variation in shoot dry weights respectively with no differences between the destructive and the non-destructive methods. The individual stool yields varied widely among the species and within willow species with biomass yield range of 37.60–92.00 oven dry tons (ODT) ha−1 in 4-year growth cycle. The biomass yield of the bioenergy belt, predicted by allometric relations was 48.84 ODT ha−1 in 4-year growth cycle corresponding to 12.21 ODT ha−1 year−1. The relatively high biomass yield is attributed to the border effects and the ‘fertilizing effect’ of alder due to nitrogen fixation, benefitting other SWRC components. On termination of 4-year growth cycle, the bioenergy belts were harvested and the biomass yield recorded was 12.54 ODT ha−1 year−1, in close proximity to the biomass yield predicted by the allometric equations, lending confidence and robustness of the model for biomass yield determination in such integrated agro-ecosystem. |
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| Keywords: | Allometric equation Destructive and non-destructive method Stool and biomass yield Bio-energy belts Food and fodder crops Short rotation woody crops |
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