首页|Impacts of Recent Climate Trends and Human Activity on the Land Cover Change of the Abbay River Basin in Ethiopia

Impacts of Recent Climate Trends and Human Activity on the Land Cover Change of the Abbay River Basin in Ethiopia

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  • NSTL
  • Hindawi Publishing Group
The Abbay River Basin, which originates in Ethiopia, is a major tributary and main source of the Nile River Basin. Land cover and vegetation in the Abbay River Basin is highly susceptible to climate change. This study was conducted to investigate the trends of climate change for a period of thirty-six years (1980-2016) within selected stations of the basin by using the innovative trend analysis method, Mann-Kendall test, and Sen's slope estimator test to investigate the mean annual precipitation and temperature variables. Changes in land cover and vegetation in the Abbay River Basin were studied for a period of thirteen years (2001-2013) by using remote sensing, GIS analysis, land cover classification, and vegetation detection methods to assess the land cover and vegetation in the basin. In addition, Normalized Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVI), and Transformation Matrix were employed to analyze the spatial and temporal patterns of land cover and vegetation impacted by changes in climate. The result reflects that the trend of average annual temperature was remarkably increased (Φ = 0.12,Z= 0.75)in the 36-year period, and the temperature was increased by 0.5°C, although precipitation had slightly decreased during the same period. In the thirteen years' period, forest land and water resource decreased by 3429.62 km~2 and 81.45 km~2, respectively. In contrast, an increment was observed in grassland (2779.33 km~2), cultivated land (535.34 km~2), bare land (43.08 km~2), urban land (0.65 km~2), and wetland (152.66 km~2) in the same period. In the study, it was also observed a decrease of an NDVI value by 0.1 was observed in 2013 in the southern part of the basin. The findings of the present study illustrate a significant change in eco-hydrological conditions in the ARB with an adverse impact on the environment. Hydroclimatic changes caused the increase in temperature and decreasing trend in precipitation which significantly impacted the

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Asaminew Abiyu Cherinet、Denghua Yan、Hao Wang、Xinshan Song、Tianlin Qin、Mulualem T. Kassa、Abel Girma、Batsuren Dorjsuren、Mohammed Gedefaw、Hejia Wang、Otgonbayar Yadamjav

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College of Environmental Science and Engineering, Donghua University, Shanghai 201620,China

State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research (IWHR), Beijing 100038, China

Bio-Taq Economy Innovations (BioTEI) Inc, Winnipeg, Canada

Department of Environment and Forest Engineering, School of Engineering and Applied Sciences, National University of Mongolia, Ulaanbaatar 210646, Mongolia

Department of Hydraulic Engineering, Tsinghua University, Haidian District, Beijing 100084,China

Department of Sociology and Social Work, School of Art & Sciences, National University of Mongolia, Ulaanbaatar 210646, Mongolia

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2019

10.1155/2019/5250870

Advances in Meteorology

Advances in Meteorology

SCI
ISSN：1687-9309
年,卷(期)：2019.2019(Pt.3)
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  • 42