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Afforestation of Transformed Savanna and Resulting Land Cover Change: A Case Study of Zaria (Nigeria)

Author

Listed:
  • Ewa E. Kurowska

    (Department of Forest Engineering, Faculty of Forestry and Wood Technology, Poznan University of Life Sciences, 60-625 Poznan, Poland)

  • Andrzej Czerniak

    (Department of Forest Engineering, Faculty of Forestry and Wood Technology, Poznan University of Life Sciences, 60-625 Poznan, Poland)

  • Muhammad Lawal Garba

    (Department of Geology, Ahmadu Bello University, Zaria 810107, Nigeria)

Abstract

This paper presents the effects of actions aiming at tree planting, and thus protection of the land belonging to Ahmadu Bello University (ABU) in Zaria (Nigeria) from erosion. This area is located within the northern limits of the Guinea savanna belt, which has been considerably transformed primarily for agricultural purposes. For years this area has been subjected to the destructive surface and gully erosion processes, which were documented both by field work and the analysis of high-resolution images presented by Google Earth. Land erosion leads to the silting of an impounding reservoir (Kubanni)—the primary water source for the university campus and the basis for its existence. Since 2000, the university has been actively involved in tree-planting efforts in the campus vicinity, executed mainly through the establishment of small plantations ranging in area from approximately 1 ha to 56 ha. Today, these measures have brought tangible effects such as increment of tree-planted expanses, as evidenced in the multitemporal analysis of the Landsat 7 ETM+ and Landsat 8 OLI satellite images. The increasing planted area protects both the soil and the reservoir. A marked stand increment (almost doubled) has been recorded, which is evident from the satellite imageries, and is presented on the land-use map produced with GIS technique for this project.

Suggested Citation

  • Ewa E. Kurowska & Andrzej Czerniak & Muhammad Lawal Garba, 2022. "Afforestation of Transformed Savanna and Resulting Land Cover Change: A Case Study of Zaria (Nigeria)," Sustainability, MDPI, vol. 14(3), pages 1-21, January.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:3:p:1160-:d:729437
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    References listed on IDEAS

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    1. Pasquale Borrelli & David A. Robinson & Larissa R. Fleischer & Emanuele Lugato & Cristiano Ballabio & Christine Alewell & Katrin Meusburger & Sirio Modugno & Brigitta Schütt & Vito Ferro & Vincenzo Ba, 2017. "An assessment of the global impact of 21st century land use change on soil erosion," Nature Communications, Nature, vol. 8(1), pages 1-13, December.
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