Species specific allometric equations for biomass estimation of three selected trees species in egdu forest of oromia national regional state

ADDIS ABABA UNINVERSITY COLLEGE OF NATURAL AND COMPUTATIONAL SCIENCE CENTER FOR ENVIRONMENTAL SCIENCE Species Specific Allometric Equations for Biomass Estimation of Three Selected Trees Species in Egdu Forest of OromiaNational Regional State Tesfaye Debela Addis Ababa, Ethiopia June, 2017 ADDIS ABABA UNINVERSITY COLLEGE OF NATURAL AND COMPUTATIONAL SCIENCE CENTER FOR ENVIRONMENTAL SCIENCE Species Specific Allometric Equations for Biomass Estimation of Three Selected Trees Species in Egdu Forest of Oromia National Regional State A Thesis Submitted to Center for Environmental Science In Partial Fulfillment of the Requirements for the Degree of Master of Science (Environmental Science) By Tesfaye Debela Advisor: Teshome Soromessa (Assoc Professor) Addis Ababa, Ethiopia June, 2017 ADDIS ABABA UNINVERSITY COLLEGE OF NATURAL AND COMPUTATIONAL SCIENCE CENTER FOR ENVIRONMENTAL SCIENCE This to certify that the thesis prepared by TesfayeDebela entitled: Species Specific Allometric Equations for Biomass Estimation of Three Selected Trees Species in Egdu Forest of Oromia National Regional StateImplication for Sustainable Management and Climatic Change Mitigation and submitted in partial fulfillment of the requirements for the Degree of Master of Science (Environmental Science) complies with the regulation of the University and meets the accepted standards with the respect to originality and quality Signed by examining committee: Examiner signature _Date _ Examiner signature _Date _ Advisor _signature Date ……………………………………………………………………………… DEDICATION This piece of work is dedicated to my sisters Alemitu Debela and Diribe Debela for their endless love, nursing me from child stage, educating, supporting and encouragingto my success though death come ahead of their revels a bit before my success in joining of the University Tesfaye Debela Bedane _ Signature Species Specific Allometric Equations for Biomass Estimation of Three Selected Trees Species in Egdu Forest of Oromia National Regional State: Implication for Sustainable Management and Climatic Change Mitigation TesfayeDebela, MSc Addis Ababa University, 2017 Abstract Species specific allometric equations are important for accurate net aboveground biomass estimation and quantifying carbon stock in living tree biomass of terrestrial ecosystems This study was undertaken to develop species-specific allometric equation semi-destructively of two indigenousand one exotic tree species namely Mytenu sobscura, Rosa abyssinica and Eucalyptus globulus respectively in Egdu forest of Oromia Region Currently, like that most Ethiopian forest such model did not exist for this particular species by this methodology The data was taken from 12 individuals of each species with different DBH class intervals Preferential sampling method was used to collected data by DBH class The allometric equations were developed by relating tree component biomass to DBH or basal diameter Four equations with high adjusted R2adj&correlation and low AIC & RSE value were selected for each tree species and the statistical analysis was highly significant (p