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Universität für Bodenkultur Wien (2015)

Effect of area exclosure on above ground carbon storage and diveristy in Amhara region, Ethiopia

Abraha, Hadera Kahesay

Titre : Effect of area exclosure on above ground carbon storage and diveristy in Amhara region, Ethiopia

Auteur : Abraha, Hadera Kahesay

Université de soutenance : Universität für Bodenkultur Wien

Grade : Master 2015

Résumé
Area exclosure is an important method to restore and rehabilitate the degraded grazing land and hill sides and to increase fertility and productivity of the soil in Ethiopia (Tefera et al., 2005). In this study, using different allometric equations, above ground biomass from RCD was estimated for 5 years (Ambober, 2014), at beginning when the area was enclosed (Ambober, 2009) and after 2 years (Gelawdiows) of exclosure in Amhara region, Ethiopia. The vegetation inventory was conducted in the 57 plots across the two districts of the study site, 42 plots from Ambober and 15 plots from Gelawdiows were used. The sample plots were taken in grid sampling method .Finally in each plot every tree and shrubs having a diameter <10 cm at above ground, and having height > 1.5 m was measured and 37 species were identified across study sites sample plots. Using five allometric equation, above ground biomass was estimated for a 19 ha area exclosure of Ambober, 2014 was 190.11-73.26 tons within 5 years enclosed. Ambober, 2009 was 0.14-1.89 tons estimated in the beginning of establishment. From 15 ha area exclosure Gelawdiows was estimated 0.94 - 4.34 tons within 2 years enclosed. Five models, estimated the mean above ground biomass for Ambober, 2014 (3.85-10.01 ton/ha), Ambober, 2009 (0.007- 0.099 ton/ha) and Gelawdiows (0.06 - 0.28 ton/ha). The result showed, that estimated the mean carbon stocks of the above ground biomass in the Ambober, 2014 site were significantly higher (p<0.05) than of the Ambober, 2009 and Gelawdiows at all models. The mean biomass increment in Ambober area closure within 5 years was estimated from to be 4.78 -11.25 ton/ha and annual increment of above ground biomass in Ambober area exclosure were 0.96- 2.25 ton/ha.

Mots clés : Weideausschlussgebiet, Durchmesser, Biomasse, Kohlenstoffbestand, allometrische Gleichungen Area exclosure, diameter, biomass, carbon stock, allometric equations.

Présentation -> http://zidapp.boku.ac.at/abstracts/...

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Page publiée le 13 avril 2017, mise à jour le 13 mars 2019