Comparative Analysis of Carbon Stocks in Home Garden and Adjacent Coffee Based Agroforestry Systems in Ethiopia

Mitigation of climate change is one of the major environmental challenges facing the globe. In this context, homegarden agroforestry systems (HGAFs) have large potential for climate change mitigation. Therefore, this study was initiated to estimate the biomass and soil carbon stocks of HGAFs in relation to adjacent Natural Forest (NF). It also analyzed the relationship between woody species diversity, evenness and richness with biomass and soil carbon stocks. Three sites were purposely selected on the basis of the presence of HGAFs and NF adjacent to each other. Random sampling was used to select representative homegardens from the study population. In NF, a systematic sampling technique was employed. A total of 60 plots with a size of 10 m x 20 m were used to collect vegetation and soil data in both land uses. Soil samples were collected from each plot of the samples laid for vegetation sampling. Accordingly, 120 composite and 120 undisturbed soil samples from 0-30 cm and 30-60 cm soil depths were collected for soil organic carbon (SOC) and bulk density analysis respectively. Biomass estimation for each woody species was analyzed by using appropriate allometric equations. The result showed that the total amount of carbon stocks was 148.32±35.76 tons ha-1 and 157.27±51.61 tons ha-1 in HGAFs and adjacent NF respectively which did not vary significantly between the two studied land uses (P > 0.05). The finding also shows a positive but non-significant (P>0.05) relationship between carbon stocks and woody species diversity, richness, and evenness. Specifically, in NF lands, woody species diversity with SOC (r=0.36) and in HGAFs species richness with biomass carbon (r=0.39) was correlated positively and significantly (P=0.05). We concluded that HGAFs have the same potential as the NF for carbon stock accumulation and to counteract the loss of biomass.

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Ecosystem Service Multifunctionality: Decline and Recovery Pathways in the Amazon and Chocó Lowland Rainforests

Sustainability ◽

10.3390/su12187786 ◽

2020 ◽

Vol 12 (18) ◽

pp. 7786 ◽

Cited By ~ 1

Author(s):

Paul Eguiguren ◽

Tatiana Ojeda Luna ◽

Bolier Torres ◽

Melvin Lippe ◽

Sven Günter

Keyword(s):

Land Use ◽

Ecosystem Service ◽

Agroforestry Systems ◽

Carbon Stocks ◽

Land Use Transition ◽

Trade Offs ◽

Successional Forests ◽

Post Harvesting ◽

Recovery Pathways ◽

The Impact

The balance between the supply of multiple ecosystem services (ES) and the fulfillment of society demands is a challenge, especially in the tropics where different land use transition phases emerge. These phases are characterized by either a decline (from intact old-growth to logged forests) or a recovery of ES (successional forests, plantations, and agroforestry systems). This highlights the importance of ecosystem service multifunctionality (M) assessments across these land use transition phases as a basis for forest management and conservation. We analyzed synergies and trade-offs of ES to identify potential umbrella ES. We also evaluated the impact of logging activities in the decline of ES and M, and the influence of three recovery phases in the supply of ES and M. We installed 156 inventory plots (1600 m2) in the Ecuadorian Central Amazon and the Chocó. We estimated indicators for provisioning, regulating, supporting services and biodiversity. M indicator was estimated using the multifunctional average approach. Our results show that above-ground carbon stocks can be considered as an umbrella service as it presented high synergetic relations with M and various ES. We observed that logging activities caused a decline of 16–18% on M, with high impacts for timber volume and above-ground carbon stocks, calling for more sustainable practices with stricter post-harvesting control to avoid a higher depletion of ES and M. From the recovery phases it is evident that, successional forests offer the highest level of M, evidencing high potential to recover multiple ES after human disturbance.

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Quantifying carbon stocks and sequestration potential in agroforestry systems under divergent management scenarios relevant to India’s Nationally Determined Contribution

Journal of Cleaner Production ◽

10.1016/j.jclepro.2020.124831 ◽

2021 ◽

Vol 281 ◽

pp. 124831

Author(s):

Arun Jyoti Nath ◽

Gudeta Weldesemayat Sileshi ◽

Sabina Yasmin Laskar ◽

Karabi Pathak ◽

Demsai Reang ◽

...

Keyword(s):

Agroforestry Systems ◽

Carbon Stocks ◽

Management Scenarios ◽

Sequestration Potential

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Soil Organic Carbon Stocks Under Different Agroforestry Systems of North-Eastern Regions of India

Agroforestry ◽

10.1007/978-981-10-7650-3_11 ◽

2017 ◽

pp. 299-316

Author(s):

K. M. Manjaiah ◽

S. Sandeep ◽

T. Ramesh ◽

M. R. Mayadevi

Keyword(s):

Organic Carbon ◽

Soil Organic Carbon ◽

Agroforestry Systems ◽

Carbon Stocks ◽

Soil Organic Carbon Stocks ◽

North Eastern

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Soil carbon stocks and origin under different cacao agroforestry systems in Southern Bahia, Brazil

Agriculture Ecosystems & Environment ◽

10.1016/j.agee.2016.01.022 ◽

2016 ◽

Vol 221 ◽

pp. 99-108 ◽

Cited By ~ 33

Author(s):

Paulo Henrique Marques Monroe ◽

Emanuela Forestieri Gama-Rodrigues ◽

Antonio Carlos Gama-Rodrigues ◽

José Raimundo Bonadie Marques

Keyword(s):

Soil Carbon ◽

Agroforestry Systems ◽

Carbon Stocks ◽

Southern Bahia ◽

Soil Carbon Stocks

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Farmers’ Participation in Agroforestry System in Northwestern Nigeria

Nigerian Journal of Environmental Sciences and Technology - March 2018 ◽

10.36263/nijest.2018.02.0093 ◽

2018 ◽

Vol 2 (2) ◽

pp. 257-265

Author(s):

M. N. Danjuma ◽

S. Mohammed ◽

M. Z. Karkarna

Keyword(s):

Land Tenure ◽

Alley Cropping ◽

Smallholder Farmers ◽

Agroforestry System ◽

Agroforestry Systems ◽

Home Garden ◽

Indigenous Species ◽

Tree Seedling ◽

Scattered Trees ◽

The One

The aim of this study is to assess agroforestry practices in Northwestern Nigeria with a view to bringing to light some salient features of the system for maximising benefits and improving livelihoods of smallholder farmers in the study area. A total of one hundred and sixty six smallholder farmers were sampled using random technique from five hundred and fifty farmers’ listed by the contact forum in the study area. Questionnaire was administered to the one hundred and sixty six smallholder farmers with a view to examining the level of farmers’ participation in agroforestry in six villages namely Kabobi and Garki in Katsina State, Bulangu and Abonabo in Jigawa State, Bobo in Zamfara State and Gulma in Kebbi State. Interview was also conducted with ten farmers in Bulangu, Kabobi and Gulma to provide explanations on the limitation to acceptance of agroforestry innovations in the study area. Data collected with the questionnaire was analysed using simple percentage and frequency in order to measure dispersion among sampled farmers. Data collected from the interview was coded, transcribed and presented in textual form in the paper. Result of the study revealed that seven agroforestry systems (alley cropping, boarder line planting, scattered planting, woodlot, apiculture, orchard and home garden) were practiced in the area. Orchard and home garden were not practiced in Kabobi, the northern most of the villages. It also indicated farmers’ level of participation for the seven identified technologies as follows: Alley cropping (25.63%), boarder line planting (16.25%), scattered trees on farmland (36.25%), woodlot (1.25%), orchard (1.88%), apiculture (8.75%) and home gardens (10.00%). The key factors limiting acceptance of innovations include: l) lack of tree seedling (25.00%), land tenure issues (17.50%), long tree gestation period of indigenous species (50.63%) and insect attack (06.88%). This study recommended that farmers should be educated more on agroforestry technologies through mass media programmes and ICT.

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Asset-Based Adaptation Project Promotes Tree and Shrub Diversity and Above-Ground Carbon Stocks in Smallholder Agroforestry Systems in Western Kenya

Frontiers in Forests and Global Change ◽

10.3389/ffgc.2021.773170 ◽

2022 ◽

Vol 4 ◽

Author(s):

Lisa Elena Fuchs ◽

Levi Orero ◽

Stephen Ngoima ◽

Shem Kuyah ◽

Henry Neufeldt

Keyword(s):

Carbon Stock ◽

Smallholder Farmers ◽

Carbon Sink ◽

Agroforestry Systems ◽

Carbon Stocks ◽

Shrub Species ◽

Smallholder Farms ◽

Western Kenya ◽

Context Specific ◽

Agroforestry Practices

Agroforestry has potential to address the adverse effects of climate change through carbon sequestration, increasing biodiversity and improving adaptive capacity and resilience among smallholder farmers. However, this potential is context specific and insufficiently quantified in smallholder faming systems, partly because of inherent variability of smallholder farms. Our study aimed to determine the tree/shrub diversity and carbon stocks in different agroforestry systems within smallholder farms in two 100 km2 sites, the so-called lower and middle Nyando sites, in western Kenya. In both, context-specific agroforestry adoption had been promoted among households of four community associations through an asset-based community development (ABCD) approach. Their farms were assessed and compared with those of relevant comparison samples. Trees and shrubs were inventoried on a total of 106 farms, and their formations classified in five major agroforestry practices: hedgerows, multipurpose trees on farm (MPT), riparian buffers, woodlots, and boundary planting. To assess above-ground biomass (AGB) of individual trees/shrubs, diameter at breast height measurements were taken. Strong regional differences were considered in data analysis and presentation. Altogether, 3,353 and 6,346 trees/shrubs were inventoried in the lower and middle Nyando sites, respectively. AGB was significantly higher in middle than in lower Nyando. Woodlots had the highest amount of AGB carbon stock, while MPT had the highest diversity of tree/shrub species in all the groups. Conversely, boundary planting had the highest number of trees/shrubs inventoried and hence was the most common agroforestry practice across all the samples in both regions. Dominant AGB contributor species were Grevillea robusta (37.8%) in middle, and Eurphobia tirucalli (16.5%) in lower Nyando. This study provides empirical evidence that asset-based and community-driven selection and implementation of both tree/shrub species and agroforestry practices can contribute positively to species and practice diversity, which are associated with AGB carbon stock levels and wider agro-ecosystem diversity. This study hence provides benchmark information that is relevant for SDG goal 15 on “life on land,” and various specific targets, and can inform sustainable establishment of carbon sink facilities by supporting smallholders to uptake contextually suitable and economically sensible agroforestry practices in an overall effort to foster and support sustainable development.

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