Land Use and Land Cover Change, and Woody Vegetation Diversity in Human Driven Landscape of Gilgel Tekeze Catchment, Northern Ethiopia. (12th June 2014)

• Record Type: Journal Article
• Authors: Tesfaye, Samuale; Guyassa, Etefa; Joseph Raj, Antony; Birhane, Emiru; Wondim, Gebeyehu Taye
• Other Names: Larocque Guy R. Academic Editor.
• Is Part Of: International journal of forestry research. Volume 2014(2014)
• Publication Date: 2014-06-12
• Subjects: Forests and forestry -- Periodicals; Forests and forestry; Periodicals; 634.9
• DOI: 10.1155/2014/614249
• Languages: English
• ISSNs: 1687-9368

Abstract

Abstract : Land use and land cover (LULC) change through inappropriate agricultural practices and high human and livestock population pressure have led to severe land degradation in the Ethiopian highlands. This has led to further degradation such as biodiversity loss, deforestation, and soil erosion. The study examined woody vegetation diversity status and the impact of drivers of change across different LULC types and agroecological zones in Gilgel Tekeze catchment, northern Ethiopian highlands. LULC dynamics were assessed using GIS techniques on 1976, 1986, and 2008 satellite images. Vegetation data were collected from 135 sample plots (20 m × 20 m) from five LULC types, namely, forest, shrub-bush, grazing, settlement, and cultivated land, in the three agroecological zones; Kolla, Weyna-Dega, and Dega. Differences in vegetation structure and composition and their relationship to agroecological zones were tested using two-way ANOVA and PCA technique. The results show that vegetation structure and composition significantly differed across all LULC types in different agroecological zones particularly in sapling density, tree height, and shrub height and in each agroecological zone between forest land, shrub-bush land, and settlement area. Overall, Weyna-Dega agroecological zone and the shrub-bush land had more structural and compositional diversity than the other agroecological zones and LULC types.