Trends in gully erosion as evidenced from repeat photography (North Ethiopia)

• Autorzy: Frankl A. , Nyssen J. , De Dapper M. , Haile M. , Deckers J. , Poesen J.
• Języki publikacji: EN

Abstrakty

EN

Repeat photography offers a valuable tool for assessing gully erosion development over the past 140 years in North Ethiopia. From a dataset of 57 repeated historical photographs that display gully cross-sections, this study demonstrates that a gully incision phase took place in the second half of the 20th century. At present, thanks to the successful implementation of soil and water conservation measures, most gullies are stabilizing.

Słowa kluczowe

EN

gullies; North Ethiopia; repeat photography

• Wydawca: Stowarzyszenie Geomorfologów Polskich
• Czasopismo: Landform Analysis
• Rocznik: 2011
• Tom: Vol. 17
• Strony: 47--50
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Frankl A.

autor

Nyssen J.

autor

De Dapper M.

autor

Haile M.

autor

Deckers J.

autor

Poesen J.

• Department of Geography, Ghent University, Belgium,

Bibliografia

• Beyene A., Gibbon, D. & Mitiku Haile 2006. Heterogeneity in land resources and diversity in farming practices in Tigray, Ethiopia. Agricultural Systems 88: 61–74.
• Billi P. & Dramis F., 2003. Geomorphological investigation on gully erosion in the Rift Valley and the northern highlands of Ethiopia. Catena 50 (2–4): 353–368.
• Dada S., Rieger W. & Strauss P., 2003. Assessment of gully erosion in eastern Ethiopia using photogammetric techniques. Catena 50: 273–291.
• FAO, 2009:The state of food insecurity in the world – economic crises, impacts and lessons learned. FAO. Rome.
• Frankl A., Nyssen J., De Dapper M., Mitiku Haile,Billi P., Munro R.N., Deckers J., Poesen J., 2011. Linking long-term gully and river channel dynamics to environmental change using repeat photography (Northern Ethiopia). Geomorphology 129: 238–251.
• Merla G., Abbate E., Azzaroli A., Bruni P., Canuti P., Fazzuoli M., Sagri M. & Tacconi P., 1979. A geological map of Ethiopia and Somalia (1973) 1:2,000,000 and comment. University of Florence, Italy.
• Nyssen J., Poesen J., Descheemaeker K., Haregeweyn N., Haile M., Moeyersons J., Frankl A.,Govers G., Munro N. & Deckers J., 2008. Effects of region-wide soil and water conservation in semi-arid areas: the case of northern Ethiopia. Z. Geomorph. 52 (3): 291–315.
• Nyssen J., Poesen J., Moeyersons J., Deckers J., Haile M. & Lang A., 2004. Human impact on theenvironment in the Ethiopian and Eritrean highlands – a state of the art. Earth-Science Reviews (3–4): 273–320.
• Poesen J., Nachtergaele J., Verstraeten G. & Valentin C. 2003. Gully erosion and environmental change: importance and research needs.Catena 50 (2–4): 91–133.
• Valentin C., Poesen J. & Li Y., 2005. Gully erosion: Impacts, factors and control. Catena 63 (2–3): 132–153.