International Journal of Agroforestry and Silviculture

International Journal of Agroforestry and Silviculture ISSN 2375-1096 Vol. 5 (5), pp. 311-314, May, 2017. © International Scholars Journals

Full Length Research Paper

Carbon stock present in dominant tree species of coffee based agroforestry system

¹M Manjunatha, ¹AS Devakumar, ²Nivedita M and ²CG Kushalappa

¹Associate Professor, Department of Forestry and Environmental Sciences, UAS.GKVK, Bangaluru, India.

²Professor, Department of Forest Biology and Tree Improvement, College of Forestry, Ponnampet, India.

*Corresponding author E-mail: [email protected]. Tel.: 08943623285

Accepted 09 March, 2016

Abstract

The biomass accumulation of standing trees and the carbon stored in it varied considerably by different shade tree species grown in the coffee plantations under two vegetation types. The contribution of Tabernaemontana heyniana, Syzygium cumini and Acrocarpus fraxinifolius was as high as 8.7, 8.5 and 7.2 per cent of the carbon stocked in the total above ground biomass by the shade trees respectively, while it was as low as 1.2 per cent in Erythrina suberosa.  Though the number of trees per unit of land area was more in case of Gravillea robusta, the contribution in terms of carbon stocked in it was only 1.8 per cent. The contribution of all the ten dominant tree species to the total above ground biomass of shade trees was found to be 43.3 per cent but in case of coffee plantations of moist deciduous type of vegetation, Acrocarpus fraxinifolius and Gravillea robusta recorded 88 and 49 number of individuals per hectare which was highest, while it was as low as 9 and 12 in case of Acrocarpus fraxinifolius and Holigarna nigra respectively. The maximum per cent contribution of carbon stocking was seen in Terminalia bellarica and Ficus racemosa to the extent of 21.5 and 11.7 respectively, while it was least in case of Mangifera indica 2.1 per cent.

Keywords: Carbon stock, agroforestry, coffee plantation, biodiversity, shade tree.

International Journal of Agroforestry and Silviculture ISSN 2375-1096 Vol. 4 (3), pp. 278-284, March, 2017. © International Scholars Journals

Full Length Research Paper

Traditional agroforestry practices and woody species conservation in the derived savanna ecosystem of Adamawa state, Nigeria

¹Oke DO and ²Jamala GY

¹Department of Forestry and Wood Technology, Federal University of Technology, Akure, Ondo State, Nigeria.

²Adamawa State College of Agriculture, Ganye, Adamawa State, Nigeria.

*Corresponding author E-mail: [email protected]

Accepted 02 September, 2013

Abstract

Agroforestry practices are known to contribute to food security, environmental protection and biodiversity conservation. To determine the extent of contribution of some traditional agroforestry practices to woody species conservation, data were collected from the natural fallow land, grazing land and natural forest in, and around the Gumti sector of Gashaka-Gumti National Park, covering Toungo and Jada local government areas of Adamawa State, Nigeria. The area was sampled in a group of twelve 0.04 ha (20 m × 20 m) plots per land use type. All woody plants with diameter at breast height greater than or equal to 5 cm were identified. A total of 0.48 ha of natural fallow, grazing land and natural forest were surveyed. A total of 361 individuals belonging to 28 species and 18 families were identified in the 0.48 ha of natural forest surveyed. In the natural fallow, 314 individuals belonging to 32 species in 17 families were encountered while the grazing land had 211 individuals belonging to 24 species in 15 families. The natural forest had the highest density of woody species (752.08 plants/Ha) while the lowest (439.58 plants/Ha) was observed on the grazing land. The values Shannons diversity index differ significantly among the land use types with the natural forest having the highest (0.85), while the grazing land had the least (0.56). The rare faction curves, however indicated that the grazing land had the highest species richness relative to the total number of individuals encountered.

Keywords: Agroforestry, natural fallow, forest, grazing land, woody species conservation.

International Journal of Agroforestry and Silviculture ISSN 2375-1096 Vol. 5 (4), pp. 285-293, April, 2017. © International Scholars Journals

Full Length Research Paper

Household wellbeing disparity: Study in villages around conservation forest areas, the  Kerinci Seblat national park in the District of Lebong

¹Ketut Sukiyono*, ¹Septri Widiono, ²Enggar Apriyanto

¹Department of Agricultural Socio - Economics, Faculty of Agriculture, University Bengkulu, ²Department of Forestry, Faculty of Agriculture, University Bengkulu.

*Corresponding author E-mail: [email protected] 

Accepted 20 September, 2013 

Abstract

Household wellbeing issue is a very complex notion with many dimensions. This research used Chayat, et al (2007) nested shape of poverty model to measure household wellbeing status monitored in 3 aspects, namely, subjective, core, and context wellbeing. The second objective was to estimate welfare distribution among households. Twenty villages located around Kerinci Seblat National Park (TNKS) were determined purposively and surveyed.  Twenty households from each selected village were selected using systematic random sampling method, so the total respondents were 400 households.  The GINI index method was applied to ascertain household wellbeing disparities. There is no theoritical and mathematical background and explanation to use GINI index as an indicator of household wellbeing disparity or inequality in this research, with exception that the GINI index is conceptualized and understood as an indicator of inequality.  The research found that the majority of households in research area felt wealthy, happy and prosperous.  In terms of core wellbeing, the respondents could relatively meet their household basic needs, including health, material wealth, and education or knowledge. They also felt wealthy in terms of context wellbeing even though political, economic and natural environment spheres had less contribution to households wellbeing.  Generally, subjetive wellbeing among villages appeared less diverse or had low inequality; however, if viewed from core, context as well as agregate wellbeing, the disparity of wellbeing was more obvious.

Keywords: Household wellbeing, disparity, inequality, GINI index.

International Journal of Agroforestry and Silviculture ISSN 2375-1096 Vol. 4 (3), pp. 267-277, March, 2017. © International Scholars Journals

Full Length Research Paper

Termite assemblages in the banana agroforestry systems of Kiboga District, Central Uganda

¹Ssebulime Godfrey, ²Kagezi H. Godfrey, ¹Nyombi Kenneth, ³Mpiira Samuel, ³Tushemereirwe K. Wilberforce, ⁴Karamura B. Eldad, ⁵Staver Charles

¹Makerere University, Kampala, P.O Box 7062, Kampala, ²National Coffee Research Institute (NaCORI), National Agricultural Research Organisation (NARO), P.O. Box 185 Mukono, ³National Agricultural Research Laboratories (NARL), National Agricultural Research Organisation (NARO), P.O. Box 7065 Kampala, Uganda, ⁴Bioversity International, Sub-Regional Office SSA, P.O. Box 24384, Kampala, Uganda, ⁵Bioversity International, Parc Scientifique Agropolis II, 34397 Montpellier, France.

*Corresponding author E-mail:  [email protected], [email protected]

Accepted 25 October, 2016

Abstract

Agroforestry could be a low cost and environmentally-friendly entry point for addressing declining soil fertility problem in banana cropping systems of Uganda. Trees recycle nutrients from deep soil layers through leaf litter-fall and then, decomposition. Agroforestry systems are known to influence termites, the most important decomposers in tropics. A study was therefore conducted in the banana agroforestry systems of Kiboga district, central Uganda to assess the influence of tree species, seasons, intensity of tree pruning and microhabitat on termite assemblages.  Termite assemblage encountered was species-poor, with only 13 species, dominated by genus Macrotermes (23%) and sub-family Macrotermitinae (69%). Overall, 359 termites encounters were observed, with Pseudo canthotermes militaris being the most abundant species (99 encounters). Only relative abundance of termites varied significantly (p≤0.05) among tree species, seasons, pruning regimes and microhabitats. Highest encounters were observed underneath Ficus natalensis canopy (0.4), in part due to its thick canopy that provides cool microenvironment that promotes survival of termites. Additionally, the dry season and pruning increase availability of food resources (litter/woody material) for the Macrotermitinae termites. In conclusion, F. natalensis pruned at 50% proved to be the best-bet banana-agroforestry system for conserving and promoting termite assemblages.

Keywords: Abundance, agro-forestry, diversity, richness, termite-assemblages.

International Journal of Agroforestry and Silviculture ISSN 2375-1096 Vol. 4 (2), pp. 257-266, February, 2017. © International Scholars Journals

Full Length Research paper

Woody species and soil carbon stocks under patch natural forests and adjacent Enset-coffee based agroforestry in the midland of Sidama Zone, Ethiopia

Abiot Molla¹, Zebene Asfaw², Tefera Mengistu² and Zewge Teklehaimanot³

¹Department of Forestry in Madawalabu University, Bale Robe, Ethiopia.

²School of Forestry Studies, Hawassa University, Wondo Genet College of Forestry And Natural Resources, Awassa, Ethiopia.

³School of Environment and Natural Resources, Bangor University, Bangor, United Kingdom.

*Corresponding author. E-mail: [email protected]. Tel: +251925746262

Accepted 15 August, 2014

Abstract

Trees in agroforestry systems are potential sinks of atmospheric C due to their fast growth, productivity, high and long-term biomass carbon stock. Soil under forest and agroforestry also plays a major role in global C sequestration. The potential of woody species and perennial plants in carbon sequestration under patch natural forests and enset-coffee based agroforestry (ECAF) were examined. The assessment on biomass carbon stocks was total inventory for woody stems at ≥5 cm diameter at breast height, coffee at 15cm and Enset shrub at 10 cm from aboveground. Aboveground biomass was estimated using appropriate allometric equation and convert to carbon by multiplying 0.5. SOC was sampled using “X” design at depths of 0-30 cm.  Results indicated total biomass carbon stock in patch natural forests significantly (p < 0.05) higher (258.67±41.1 Mg ha^-1) than values for ECAF (175.3±9.77 Mg ha^-1). In SOC, the differences were; patch natural forests (76.18±3.58 Mg ha-1) > ECAF (66.79±2.73Mg ha^-1> annual crop agricultural land (38.93 ± 2.75 Mg ha^-l). In CO₂ sequestration, highest estimate values were from patch natural forests (58.04%) over its lifetime followed by ECAF (41.96%). The results confirm that patch natural forests and ECAF play a major role in climate change mitigation.

Kew words: Biomass, carbon stock, CO₂, enset-coffee based agroforestry, patch natural forests, SOC.

International Journal of Agroforestry and Silviculture ISSN 2375-1096 Vol. 4 (1), pp. 246-256, January, 2017. © International Scholars Journals

Full Length Research Paper

Diversity and standing carbon stocks of Agroforestry trees in Wenago District, Ethiopia

¹Talemos Seta* and Sebsebe Demissew²

*¹Addis Ababa University, Department of Plant Biology & Biodiversity Management,  P.O. Box 32935, Addis Ababa, Ethiopia. 

²Addis Ababa University, Professor, Department of Plant Biology and Biodiversity management Keeper, National Herbarium, Addis Ababa, Ethiopia.

*Corresponding author. Email: [email protected]

Accepted 19, February 2014

Abstract

Tree species composition, similarity index and aboveground carbon (AGC) stocks of agroforestry system were assessed in Wenago district, Ethiopia. A total of 20 agroforests were surveyed through a stratified random sampling within four PAs (Peasant Associations). A sampling plot of 900 m² was used in each agroforest for plant data (trees with DBH ≥ 15 cm) collection. Shannon-Wiener diversity (H') and Sorensen’s similarity indices were used to compute species diversity and species composition respectively. Aboveground carbon stocks of trees were computed using allometric relationships, assuming C as 50% of biomass. A total of 24 tree species under 24 genera and 19 families were identified. The highest stem density (564.4 individuals ha^-1) was recorded in the 40-60 cm DBH class. The total value of the AGB is 37.31 t ha^-1. The density of trees and DBH classes have weak correlation with standing AGB (R² = 25%, P< 0.001) and strong correlations (R² = 64%, P<0.001) between species richness and aboveground biomass. The highest AGB (15.8 t ha^-1) was recorded in the DBH range of 80-100 cm. Thus, it gives a highlight for responsible bodies to consider the role of agroforestry system particularly for climate change mitigation strategies.

Key words: Aboveground biomass, agroforestry system, wenago district, species diversity, carbon stock.