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Spatiotemporal Analysis of Land Cover Changes in the Chemoga Basin, Ethiopia, Using Landsat and Google Earth Images

Author

Listed:
  • Wubeshet Damtea

    (Department of Forest Sciences, Seoul National University, Seoul 08826, Korea)

  • Dongyeob Kim

    (Department of Forest Resources, Daegu University, Kyeongsan 38453, Korea)

  • Sangjun Im

    (Department of Forest Sciences, Research Institute of Agriculture & Life Sciences, Seoul National University, Seoul 08826, Korea)

Abstract

Land cover change is a major environmental concern in the northwestern highlands of Ethiopia. This study detected land cover transitions over the past 30 years in the Chemoga basin (total area = 118,359 ha). Land cover maps were generated via the supervised classification of Landsat images with the help of the Google Earth (GE) images. A total of 218 unchanged land features sampled from GE images were used as the training datasets. Classification accuracy was evaluated by comparing classified images with 165 field observations during the 2017 field visit. The overall accuracy was 85.4% and the kappa statistic was 0.81, implying that the land classification was satisfactory. Agricultural land is the dominant land cover in the study basin, and increased in extent by 2,337 ha from 1987 to 2017. The second and third most dominant land cover types, grassland and woodland, decreased by 1.9% and 3.6%, respectively, over the past 30 years. The increase in agricultural lands was mostly due to the conversion of grasslands and woodlands, although some agricultural lands changed to Eucalyptus plantations and human settlements. The results revealed that the expansion of built-up space and agricultural lands was the major driver of fragmentation of the landscape, and degradation of natural resources in the Chemoga basin, Ethiopia.

Suggested Citation

  • Wubeshet Damtea & Dongyeob Kim & Sangjun Im, 2020. "Spatiotemporal Analysis of Land Cover Changes in the Chemoga Basin, Ethiopia, Using Landsat and Google Earth Images," Sustainability, MDPI, vol. 12(9), pages 1-14, April.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:9:p:3607-:d:352041
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    References listed on IDEAS

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    1. Belay Simane & Benjamin F. Zaitchik & Mutlu Ozdogan, 2013. "Agroecosystem Analysis of the Choke Mountain Watersheds, Ethiopia," Sustainability, MDPI, vol. 5(2), pages 1-25, February.
    2. Alemayehu Midekisa & Felix Holl & David J Savory & Ricardo Andrade-Pacheco & Peter W Gething & Adam Bennett & Hugh J W Sturrock, 2017. "Mapping land cover change over continental Africa using Landsat and Google Earth Engine cloud computing," PLOS ONE, Public Library of Science, vol. 12(9), pages 1-15, September.
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