Evaluation of Adaptation and Growth Performance of Cupressus torulosa for Diversification and Enhanced Ecological Resilience in Guangua District, Northwestern Ethiopia

Cupressus torulosa is a promising species for afforestation and seed source development in Ethiopian highlands, yet its growth dynamics under local conditions remain underexplored. This study evaluated the species’ adaptation potential and growth performance in the Guangua District, Amhara, based on five years of field data. Growth parameters, including height and root collar diameter (RCD) in the early stages, as well as diameter at breast height (DBH) and survival percentage, were recorded. Data analysis was performed to evaluate species’ adaptability, with mean annual increments for height, girth, and basal area calculated. The findings revealed strong survival and robust growth performance in the Guangua district, with average heights of 0.45 m, 1 m, and 2 m, and girth measurements of 0.9 cm, 2.6 cm, and 6.5 cm at the first, second, and fifth years, respectively, achieving a survival rate of 85%. Furthermore, the mean annual increment (MAI) for Cupressus torulosa at the study site was 1.7 cm in girth and 0.9 m in height per year from the first to the second year, indicating excellent initial growth. A slight decline in girth after the second year suggests stabilization and a shift in the resource allocation. These findings position C. torulosa as a viable candidate for establishing sustainable seed sources in Ethiopia’s highlands, supporting climate-resilient reforestation. Further studies should assess seed viability and genetic diversity in local stands. Information & Authors Information Version history Copyright This work is licensed under a Non Exclusive No Reuse License.

Authors Metrics & Citations Metrics Article Usage 154views 73downloads Citations Download citation Mitku Alemu Mengistu. Evaluation of Adaptation and Growth Performance of Cupressus torulosa for Diversification and Enhanced Ecological Resilience in Guangua District, Northwestern Ethiopia. Authorea. 10 December 2025. DOI: https://doi.org/10.22541/au.176535558.86975737/v1 DOI: https://doi.org/10.22541/au.176535558.86975737/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu.