Abstract
Abstract
Background
Agroforestry (AF) is an ancient tradition in Ethiopian dryland farming system. Several studies have examined system design, soil fertility management and system interactions, but the biodiversity and mitigation aspects of climate change have received less focus. We assessed the diversity of woody species, biomass carbon (C), and soil organic carbon (SOC) stock associated with indigenous dryland AF practices. A total of 197 smallholder farmers representing four AF practices (home garden, parkland, boundary plantation, and woodlot) from lowland, midland, and highland areas were systematically selected. The inventory of woody species was carried out on each farm's randomly formed plot.
Results
We identified a total of 59 woody species representing 48 genera and 32 families. Shannon diversity index (H') was highest in home garden and parkland AF, while woodlots had the highest mean total stock of biomass C (31 Mg C ha−1). C stocks for smallholding systems (total biomass C and SOC 0–60 cm) ranged from 77–135 Mg ha−1. Total biomass C stocks were significantly correlated with abundance (Spearman r = 0.333; p = 0.002) but biomass components were not significantly correlated with H'. SOC soil depth stock (0–60 cm) was positively and significantly associated with H' (Spearman r = 0.291 & 0.351; p < 0.01).
Conclusions
We report greater species richness in home garden and parkland AF systems than in woodlots. While parkland AF produce lower biomass and SOC stock relative to other AF systems. The strategic use of home gardens and boundary planting can improve tree diversity and carbon storage in Ethiopian dryland ecosystems.
Publisher
Springer Science and Business Media LLC
Subject
General Earth and Planetary Sciences,Earth and Planetary Sciences (miscellaneous),Management, Monitoring, Policy and Law,Global and Planetary Change
Reference53 articles.
1. Verchot LV, Noordwijk MV, Kandji S, Tomich T, Ong C, Albrecht A, Mackensen J, Bantilan C, Anupama KV, Palm C. Climate change : linking adaptation and mitigation through agroforestry. Mitig Adapt Strat Glob Chang. 2007;12:901–18. https://doi.org/10.1007/s11027-007-9105-6.
2. Mbow C, Smith P, Skole D, Duguma L, Bustamante M. ScienceDirect Achieving mitigation and adaptation to climate change through sustainable agroforestry practices in Africa. Curr Opin Environ Sustain. 2014;6:8–14. https://doi.org/10.1016/j.cosust.2013.09.002.
3. Ali A, Erenstein O. Climate risk management assessing farmer use of climate change adaptation practices and impacts on food security and poverty in Pakistan. Clim Risk Manag. 2017;16:183–94. https://doi.org/10.1016/j.crm.2016.12.001.
4. Bishaw B, Neufeldt H, Mowo J. Farmers’ strategies for adapting to and mitigating climate variability and change through agroforestry in Ethiopia and Kenya Forestry C. Forestry Communications Group. Corvallis: Oregon State University; 2013.
5. Kuyah S, Öborn I, Jonsson M, Dahlin AS, Muthuri C, Malmer A, et al. Trees in agricultural landscapes enhance provision of ecosystem services in Sub-Saharan Africa. Int J Biodivers Sci Ecosyst Serv Manag. 2016;12(4):255–73. https://doi.org/10.1080/21513732.2016.1214178.
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