Woody Species Diversity and Structure of Agroforestry and Adjacent Land Uses in Dallo Mena District, South-East Ethiopia

Mengistu, Bikila; Asfaw, Zebene

doi:10.4236/nr.2016.710044

Cited by 38 publications

(24 citation statements)

References 11 publications

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“…We documented high species richness in this sample of indigenous AF systems. This was similar with the species richness found in the Gedeo AF systems of Southern Ethiopia [ 9 ], but higher than the species richness found in the AF systems of South eastern Tigray and East Shewa, [ 23 – 25 ], and lower than the South central highlands of Ethiopia [ 26 ]. This could be due to environmental variability such as altitude, soils, topography, species adaptability and management strategy [ 9 ].…”

Section: Discussionsupporting

confidence: 83%

Tree diversity and carbon stocks in agroforestry systems in northern Ethiopia

Manaye

Tesfamariam

Tesfaye

et al. 2021

Carbon Balance Manage

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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.

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Section: Discussionsupporting

confidence: 83%

Tree diversity and carbon stocks in agroforestry systems in northern Ethiopia

Manaye

Tesfamariam

Tesfaye

et al. 2021

Carbon Balance Manage

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“…A large number of species richness (59) was recorded in the study indigenous AF systems. This was similar with the species richness found in Gedeo AF systems of Southern Ethiopia [9], but higher than the species richness found in the AF systems of South eastern Tigray and East Shewa, Ethiopia [25][26][27] and lower than the South central highlands of Ethiopia [28]. This could be due to environmental variability such as altitude, soils, topography, species adaptability and management strategy [9].…”

Section: Woody Species Diversitysupporting

confidence: 82%

Role of Indigenous Dryland Agroforestry System for Biodiversity Conservation and Carbon Storage in Tigray, Northern Ethiopia

Manaye¹,

Tesfamariam

Tesfaye³

et al. 2019

Preprint

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Background : Agroforestry (AF) is an age-old practice in the farming system of Ethiopian dry lands. So far, several studies conducted in the ﬁeld of AF focused on system design, soil fertility management and system interactions. Less emphasis has been given to the biodiversity and climate change mitigation aspects. The objective of this paper was to evaluate the woody species diversity, biomass carbon (C) and soil organic carbon (SOC) stock of the dry land indigenous AF practices. A total of 197 smallholder farmers representing four AF practices were systematically selected from three agroecologies. Woody species inventory was done on the randomly established plot of each farm. Results : A total of 59 species, belonging to 48 genera and 32 families were recorded. Shannon diversity index (H’) of highland agroecology was higher in-home garden AF while in the midland and lowland the higher H’ was recorded in parkland AF. Smallholding ecosystem C stocks (sum of total biomass C and SOC 0 –60 cm) ranged from 77 to 135 Mg ha−1.The mean total biomass C stock of woodlot AF practice (31 Mg C ha-1) was significantly higher than the other three AF practices. SOC stocks (0–60 cm) were greater in boundary planting (113 Mg C ha-1) followed by the home garden (109 Mg C ha-1) and woodlot (97 Mg C ha-1) AF practices. Conclusions : The woody species diversity of highland agroecology was higher in-home garden AF while in the midland and lowland the higher species diversity was recorded in parkland AF. As compared to other AF systems, our study revealed that rotational woodlot and boundary planting AF practice accounts higher biomass and SOC stock, respectively. Finally, our work concluded that indigenous AF system is a win-win solution to address the biodiversity conservation and climate change mitigation of the dryland ecosystem.

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“…The southern region of Ethiopia is endowed with indigenous agroforestry practices that have evolved over years, and which have enabled maintenance of the region's greenery, with its magnificent ecological and socio-economic benefits (Tesfaye, 2005;Molla, 2016). The region is known for its diverse and immense biodiversity of resources in different natural and agroforestry settings (Tesfaye, 2005;Mengistu and Asfaw, 2016;Aklilu and Melaku, 2016;Molla, 2016).…”

Section: Introductionmentioning

confidence: 99%

Woody fodder species in three agro-ecological Parklands of Arba Minch Zuria Woreda, Gamo Gofa Zone, Southern Ethiopia

Gochera¹,

Shibru²,

Kechero³

2020

Int. J. Biodivers. Conserv.

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This study was conducted in Arba Minch Zuria Woreda of SNNPR, Ethiopia on Parkland agroforestry practices in three agro-ecological zones. The objective of the study was to investigate the fodder tree and shrub species composition, richness, diversity and structure. Key Informant Interviews and Focus Group Discussions were held. In total, ninety 50 m × 20 m plots were laid and standard procedures were followed. Forty nine woody species belonging to 43 genera and 31 families were identified as fodder species. Fabaceae represented by 7 species and Combertaceae and Moraceae (3 species each) were the most diverse families. Mid altitude (H'=2.98) is more diverse followed by High altitude (H'=2.23) and Low altitude agro-ecology (H'=1.94). Species in the low altitude were densely populated and have large basal area followed by mid altitude and high altitude. The top most important species with highest Importance Value Index (IVI) were Ficus sur (51.90), Ficus sycomorus (46.484) and Mangifera indica (60.161) High altitude, middle altitude and lower altitude, respectively. Generally, in the study area, there were diverse fodder trees and shrubs, all likely sources for farmers to feed livestock. So, there should be strong management and conservation practices to ensure future availability, continuous awareness raising efforts, and further study should be conducted for nutritional evaluation.

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Woody Species Diversity and Structure of Agroforestry and Adjacent Land Uses in Dallo Mena District, South-East Ethiopia

Cited by 38 publications

References 11 publications

Tree diversity and carbon stocks in agroforestry systems in northern Ethiopia

Tree diversity and carbon stocks in agroforestry systems in northern Ethiopia

Role of Indigenous Dryland Agroforestry System for Biodiversity Conservation and Carbon Storage in Tigray, Northern Ethiopia

Woody fodder species in three agro-ecological Parklands of Arba Minch Zuria Woreda, Gamo Gofa Zone, Southern Ethiopia

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