scholarly journals Woody species diversity, productivity and carbon stock potential of dry deciduous woodland in Alitash National Park, North West Ethiopia

Author(s):  
Amsalu Abich Andargie ◽  
Asmamaw Alemu Abtew ◽  
Tadesse Mucheye Azagew ◽  
Mequanent Tebikew Asres ◽  
Yohannis Gebremariam Grima

Dry woodlands provide multifunctional benefits which grouped socioeconomic and ecological values. Despite these advantageous while recently threatened, the status of dry woodland attribute is not well understood, particularly Alitash National Park (ANP). Hence, woody species diversity, productivity and carbon stock potential of ANP were studied. Based on the collected data, a total of 24 woody species were identified. The computed Shannon-Wiener's diversity and evenness index were 2.11 and 0.66, respectively which indicated that moderate diversity and individual species were sparsely distributed horizontally. The study site was dominated by few individuals of woody species that exhibited the highest value of IVI. Population structure pattern of woody species showed F shape indicates the first class exhibited good regeneration. Whereas, species in the second classes interrupted the seedling establishment phase and transformation to sapling stage as a result of disturbance caused by anthropogenic, grazing and frequent firing. Stand basal area, volume and AGB were 8.57 m2ha-1, 48.15 m3ha-1 and 49.06 ton ha-1, respectively. The estimated carbon stock of the stand was 27.7 ton ha-1. In conclusion, the results of woody vegetation attributes showed ANP is affected negatively caused by different disturbance indicate the need of appropriate intervention and management system although ANP is protected.

2021 ◽  
Author(s):  
Mesafint Minale ◽  
Menale Wondie

Abstract BackgroundTropical agroforestry systems can contribute incredible benefit for carbon sequestration and plant diversity. This system is one of the common practices in the Central part of Ethiopia. This is because of source of the multifunctional ecosystem services, such as food, feed, biodiversity conservation and carbon storage potential. MethodologyThis study was carried out to assess the influence of land size on floristic diversity, richness and biomass carbon stock. The homegardens were classified into small (<0.06 ha), medium (0.06–0.1 ha) and large (>0.1 ha). Biomass of the homegarden was computed using allometric equations.ResultsA total of 39 woody species, belonging to 24 families were recorded in all the study homegardens. Tree density 625.8 tree ha-1 and basal area 17.3 m2ha-1 were highest for small-size HGs. However, large homegarden had more species richness (Margalef Index) per garden (12.4) compared to medium and small size homegarden. Mean biomass carbon ranged from 9 to 89.3 ton ha-1. Mean biomass carbon stock per unit area was higher in small homegarden (49.3 ton ha-1) compared to medium (38.4 ton ha-1) and large (35 ton ha-1). ConclusionsThis result implies that homegarden can serve as both for carbon sequestration and conservation of woody species diversity. However, a specific homegarden management plan is necessary to improve the carbon storage and species diversification to the respective area. The results provide a catalyst the implication of the future potential of homegarden management in carbon storage thereby for climate change adaptation and mitigation purpose.


2018 ◽  
Vol 93 (3) ◽  
pp. 1191-1203 ◽  
Author(s):  
Abrha Brhan Gebre ◽  
Emiru Birhane ◽  
Girmay Gebresamuel ◽  
Kiros Meles Hadgu ◽  
Lindsey Norgrove

2020 ◽  
Vol 94 (3) ◽  
pp. 1099-1110 ◽  
Author(s):  
Emiru Birhane ◽  
Said Ahmed ◽  
Mengsteab Hailemariam ◽  
Mesele Negash ◽  
Meley Mekonen Rannestad ◽  
...  

F1000Research ◽  
2021 ◽  
Vol 10 ◽  
pp. 227
Author(s):  
Tamiru Kefalew ◽  
Mulugeta Betemariyam ◽  
Motuma Tolera

Background Gura-Ferda forest is one of the Afromontane rainforests in the southwestern region of Ethiopia. However, since 1984, large parts of this forest have become increasingly disturbed and fragmented due to forest conversion into forest farm interface and farmlands. The study was conducted to assess changes of woody species diversity and carbon stock in association with the conversion of natural forest to forest farm interface and farmlands. Methods Data were collected from natural forest, forest farm interface and farmland which are historically forest lands before 1984. A total of 90 nested plots (20m×20m for natural forest and forest farm interface; 50m*100m for farmland)) were established for inventory of woody species. Three 1m×1m subplots were established to collect litter and soil samples. A total of 180 soil samples were collected. The total carbon stocks were estimated by summing carbon stock in the biomass and soil (0-60 cm depth). Results Results showed that Shannon-Wiener diversity (H’) in forest farm interface (H’ = 1.42±0.49) is significantly lower than that of natural forest (H’ = 2.72±0.31) but significantly higher than farmland (H’ = 1.08±0.57). The total carbon stocks of natural forest (388.54±161.63 Mg C ha-1) were approximately 1.53 and 2.67 times higher than that of forest farm interface (252.95±41.86 Mg C ha-1) and farmland (145.58±25.94 Mg C ha-1). Conclusion Our study revealed that along the conversion gradient of natural forest to forest farm interface and farmland there was a significant change of woody species diversity and carbon stocks.


F1000Research ◽  
2021 ◽  
Vol 10 ◽  
pp. 227
Author(s):  
Tamiru Kefalew ◽  
Mulugeta Betemariyam ◽  
Motuma Tolera

Background: Gura-Ferda forest is one of the Afromontane rainforests in the southwestern region of Ethiopia. However, since 1984, large parts of this forest have become increasingly disturbed and fragmented due to forest conversion into forest farm interface and farmlands. The study was conducted to assess changes of woody species diversity and carbon stock in association with the conversion of natural forest to forest farm interface and farmlands. Methods: Data were collected from natural forest, forest farm interface and farmland which are historically forest lands before 1984. A total of 90 nested plots (20m×20m for natural forest and forest farm interface; 50m*100m for farmland)) were established for inventory of woody species. Three 1m×1m subplots were established to collect litter and soil samples. A total of 180 soil samples were collected. The total carbon stocks were estimated by summing carbon stock in the biomass and soil (0-60 cm depth). Results: Results showed that Shannon-Wiener diversity (H’) in forest farm interface (H’ = 1.57) is relatively lower than that of natural forest (H’ = 3.33) but higher than farmland (H’ = 1.42). The total carbon stocks of natural forest were approximately 1.21 and 2.54 times higher than that of forest farm interface and farmland. Conclusion: Our study revealed that the changes of Natural Forest to Forest Farm Interface and Farmland have effects on the diversity of woody species and carbon stocks.


2018 ◽  
Vol 93 (5) ◽  
pp. 1793-1806 ◽  
Author(s):  
Beyene Belay ◽  
Solomon Zewdie ◽  
Wolde Mekuria ◽  
Abrham Abiyu ◽  
Dagninet Amare ◽  
...  

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