Patterns, causes and consequences of land use/cover dynamics in the Gumara watershed of lake Tana basin, Northwestern Ethiopia
| Autor: | Mesfin Anteneh Wubie, Melanie D. Nicolau, Mohammed Assen |
|---|---|
| Jazyk: | angličtina |
| Předmět: |
Hydrology
Watershed geography.geographical_feature_category 010504 meteorology & atmospheric sciences Land use Agroforestry business.industry Wetland Land-use planning Land cover 010501 environmental sciences 01 natural sciences Geography Agriculture Soil retrogression and degradation business Environmental degradation 0105 earth and related environmental sciences |
| Zdroj: | Environmental Systems Research. 5(1) |
| ISSN: | 2193-2697 |
| DOI: | 10.1186/s40068-016-0058-1 |
| Popis: | This study was aimed at examining land use/cover changes over 48 years and its causative factors in the Gumara watershed of Lake Tana basin, Northwestern Ethiopia. Two sets of aerial photograph (1957 and 1985) and a multispectral Spot5 image (2005) were used as inputs to produce three GIS-based land cover maps of the study area. Socio-economic surveys, focus group discussion and field observation were also used to determine the cause and effects of these land use/cover dynamics. The results showed that cultivated and settlement land expanded by 21.99 %, whereas forest land, shrub land, grass land and wetland declined by 85.30, 91.39, 76.15 and 72.54 % over the analysis period respectively. Population pressure, demand for fuel wood and construction material, agricultural expansion and policy and tenure insecurity were the major driving forces behind the land use/cover change. Environmental and local livelihoods implications such as lake water and its aquatic resources and soil degradation, biodiversity loss and forest cover decline are resulted from the changes. The cumulative effect of these implications caused poverty and environmental degradation. Hence, there should be strategies of managing open access resources through participation of local people in the management. There should also be appropriate land use planning by identifying the proper land for specific purpose so that the marginal lands will not be put into agricultural use. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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