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The Ecological Impact of Urban Expansion in Oasis Environments: A combined Cartographic and Landscape Analysis of Laghouat Oasis in the Algerian Sahara

*Assoule Dechaicha scopus publons  -  Department of Architecture, Institute of Urban Techniques Management, University of M’sila, Algeria, Algeria
Walid Arab  -  Department of City Management, Institute of Urban Techniques Management, University of M’sila, Algeria, Algeria
Djamel Alkama  -  Department of Architecture, Faculty of Sciences and Technology, University of Guelma, Algeria, Algeria

Citation Format:
Abstract
Current urban expansion patterns are mostly considered impulsive, with numerous negative consequences for our biosphere. This disturbing fact has not gone unnoticed in the sprawling oasis cities of the Algerian Sahara. The palm groves are the main victim. Moreover, any approach taken to preserve oasis ecosystems requires considering ecological variables. In this perspective, the present study seeks to highlight the spatial growth process of the Laghouat oasis in southern Algeria, during the period 1986 - 2019. The methodology is based on the supervised classification of four Landsat satellite images to initiate a cartographic analysis and a landscape quantification of the land use evolution. The results of the cartographic analysis highlighted two completely opposite spatiotemporal trends: significant growth of built-up areas, against a considerable retreat of palm groves. The monitoring of the landscape metrics also revealed two different behaviours: growth by densification and elongation of the urban fabric, versus progressive morcellation and fragmentation of the palm groves. These results pointed to the negative impact of uncontrolled extensions on the oasis landscape. The present research also demonstrated the significance of landscape metrics in assessing various forms of spatial urban growth, and could support urban planners in choosing the best solutions for oasis sustainability.
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Keywords: Spatial growth; Palm grove; Oasis ecosystem; Satellite image; Landscape metrics; Landscape fragmentation

Article Metrics:

  1. Aguilera, F., Valenzuela, L. M., & Botequilha-Leitão, A. (2011). Landscape metrics in the analysis of urban land use patterns: A case study in a Spanish metropolitan area. Landscape and Urban Planning, 99(3–4), 226–238. https://doi.org/10.1016/j.landurbplan.2010.10.004
  2. Benarfa, K., Khalfallah, B., & Alkama, D. (2018). Rôle de la règlementation urbaine dans la préservation de l’Oasis de Laghouat (The role of urban regulation in the preservation of the Oasis of Laghouat). Courrier Du Savoir, 26, 175–186. http://revues.univ-biskra.dz/index.php/cds/article/download/3931/3554
  3. Benkouider, F., Abdellaoui, A., Hamami, L., & Elaihar, M. (2013). Spatio Temporal Analysis of Vegetation by Vegetation Indices from Multi-dates Satellite Images: Application to a Semi Arid Area in ALGERIA. Energy Procedia, 36, 667–675. https://doi.org/10.1016/j.egypro.2013.07.077
  4. Botequilha Leitão, A., & Ahern, J. (2002). Applying landscape ecological concepts and metrics in sustainable landscape planning. Landscape and Urban Planning, 59(2), 65–93. https://doi.org/https://doi.org/10.1016/S0169-2046(02)00005-1
  5. Breuste, J., Niemelä, J., & Snep, R. P. H. (2008). Applying landscape ecological principles in urban environments. Landscape Ecology, 23(10), 1139–1142. https://doi.org/10.1007/s10980-008-9273-0
  6. Buyantuyev, A., & Wu, J. (2007). Effects of thematic resolution on landscape pattern analysis. Landscape Ecology, 22(1), 7–13. https://doi.org/10.1007/s10980-006-9010-5
  7. Chen, D., Zhang, F., Jim, C. Y., & Bahtebay, J. (2023). Spatio-temporal evolution of landscape patterns in an oasis city. Environmental Science and Pollution Research, 30(2), 3872–3886. https://doi.org/10.1007/s11356-022-22484-0
  8. Congalton, R. G. (1991). A review of assessing the accuracy of classifications of remotely sensed data. Remote Sensing of Environment, 37(1), 35–46. https://doi.org/10.1016/0034-4257(91)90048-B
  9. Congedo, L. (2021). Semi-Automatic Classification Plugin: A Python tool for the download and processing of remote sensing images in QGIS. Journal of Open Source Software, 6(64), 3172. https://doi.org/https://doi.org/10.21105/joss.03172
  10. Côte, M. (2012). Signatures sahariennes: terroirs & territoires vus du ciel (Saharan signatures: terroirs & territories seen from the sky). Presses universitaires de Provence
  11. Cyriac, S., & Firoz C., M. (2022). A Bibliometric Review of Publication Trends in the Application of Landscape Metrics in Urban and Regional Planning. Papers in Applied Geography, 8(3). https://doi.org/10.1080/23754931.2021.2018025
  12. Du, P., Liu, P., Xia, J., Feng, L., Liu, S., Tan, K., & Cheng, L. (2014). Remote Sensing Image Interpretation for Urban Environment Analysis: Methods, System and Examples. Remote Sensing, 6(10), 9458–9474. https://doi.org/10.3390/rs6109458
  13. FAO. (2016). Land Cover Classification System - Classification concepts. http://www.fao.org/publications/card/en/c/93c7a130-2f12-4f7a-a317-011eef91c5af
  14. Feng, Y., Liu, Y., & Tong, X. (2018). Spatiotemporal variation of landscape patterns and their spatial determinants in Shanghai, China. Ecological Indicators, 87, 22–32. https://doi.org/https://doi.org/10.1016/j.ecolind.2017.12.034
  15. Forman, R. T., & Forman, R. T. T. (1995). Land Mosaics: The Ecology of Landscapes and Regions. Cambridge University Press
  16. Haddad, N. M., Brudvig, L. A., Clobert, J., Davies, K. F., Gonzalez, A., Holt, R. D., Lovejoy, T. E., Sexton, J. O., Austin, M. P., Collins, C. D., Cook, W. M., Damschen, E. I., Ewers, R. M., Foster, B. L., Jenkins, C. N., King, A. J., Laurance, W. F., Levey, D. J., Margules, C. R., … Townshend, J. R. (2015). Habitat fragmentation and its lasting impact on Earth’s ecosystems. Science Advances, 1(2), e1500052. https://doi.org/10.1126/sciadv.1500052
  17. Herold, M., Scepan, J., & Clarke, K. C. (2002). The Use of Remote Sensing and Landscape Metrics to Describe Structures and Changes in Urban Land Uses. Environment and Planning A: Economy and Space, 34(8), 1443–1458. https://doi.org/10.1068/a3496
  18. Huang, J., Lu, X. X. X., & Sellers, J. M. (2007). A global comparative analysis of urban form: Applying spatial metrics and remote sensing. Landscape and Urban Planning, 82(4), 184–197. https://doi.org/https://doi.org/10.1016/j.landurbplan.2007.02.010
  19. Jia, B., Zhang, Z., Ci, L., Ren, Y., Pan, B., & Zhang, Z. (2004). Oasis land-use dynamics and its influence on the oasis environment in Xinjiang, China. Journal of Arid Environments, 56(1), 11–26. https://doi.org/https://doi.org/10.1016/S0140-1963(03)00002-8
  20. Jouve, J., & Jouve, P. (2012). Les oasis du Maghreb, des agro-écosystèmes de plus en plus menacés. Comment renforcer leur durabilité? (The oases of the Maghreb, agro-ecosystems increasingly threatened. How to enhance their sustainability?). Courrier de l’environment de l’INRA, 62(62), 113–121. https://hal.archives-ouvertes.fr/hal-01222196/
  21. Khebour Allouche, F., Abidi, I., Delaître, E., Abu-hashim, M. S. D., Ouerchfeni Bousaida, D., Hamad, S., & Riahi, R. (2021). Assessing Tunisian Oasis Dynamics Using Earth Observation and Landscape Metrics: Case of Djerid and Nefzaoua Regions BT - Environmental Remote Sensing and GIS in Tunisia (F. Khebour Allouche & A. M. Negm, Eds.; pp. 285–301). Springer International Publishing. https://doi.org/10.1007/978-3-030-63668-5_14
  22. Kouzmine, Y. (2012). Le Sahara algérien. Intégration nationale et développement régional (The Algerian Sahara. National integration and regional development). L’Harmattan
  23. Lausch, A., Blaschke, T., Haase, D., Herzog, F., Syrbe, R.-U., Tischendorf, L., & Walz, U. (2015). Understanding and quantifying landscape structure – A review on relevant process characteristics, data models and landscape metrics. Ecological Modelling, 295, 31–41. https://doi.org/https://doi.org/10.1016/j.ecolmodel.2014.08.018
  24. Lechner, A. M., Langford, W. T., Bekessy, S. A., & Jones, S. D. (2012). Are landscape ecologists addressing uncertainty in their remote sensing data? Landscape Ecology, 27(9), 1249–1261. https://doi.org/10.1007/s10980-012-9791-7
  25. Li, X., Lu, L., Cheng, G., & Xiao, H. (2001). Quantifying landscape structure of the Heihe River Basin, north-west China using FRAGSTATS. Journal of Arid Environments, 48(4), 521–535. https://doi.org/https://doi.org/10.1006/jare.2000.0715
  26. Liu, C., Zhang, F., Carl Johnson, V., Duan, P., & Kung, H. (2021). Spatio-temporal variation of oasis landscape pattern in arid area: Human or natural driving? Ecological Indicators, 125, 107495. https://doi.org/https://doi.org/10.1016/j.ecolind.2021.107495
  27. Liu, Y., Song, W., & Deng, X. (2019). Understanding the spatiotemporal variation of urban land expansion in oasis cities by integrating remote sensing and multi-dimensional DPSIR-based indicators. Ecological Indicators, 96, 23–37. https://doi.org/https://doi.org/10.1016/j.ecolind.2018.01.029
  28. Lu, D., & Weng, Q. (2007). A survey of image classification methods and techniques for improving classification performance. International Journal of Remote Sensing, 28(5), 823–870. https://doi.org/10.1080/01431160600746456
  29. Manandhar, R., Odeh, I. O. A., & Ancev, T. (2009). Improving the Accuracy of Land Use and Land Cover Classification of Landsat Data Using Post-Classification Enhancement. Remote Sensing, 1(3). https://doi.org/10.3390/rs1030330
  30. McDonald, R. I., Marcotullio, P. J., & Güneralp, B. (2013). Urbanization and Global Trends in Biodiversity and Ecosystem Services. In T. Elmqvist, M. Fragkias, J. Goodness, B. Güneralp, P. J. Marcotullio, R. I. McDonald, S. Parnell, M. Schewenius, M. Sendstad, K. C. Seto, & C. Wilkinson (Eds.), Urbanization, biodiversity and ecosystem services: challenges and opportunities: a global assessment (pp. 31–52). Springer Netherlands. https://doi.org/10.1007/978-94-007-7088-1_3
  31. McGarigal, K., Cushman, S. A., & Ene, E. (2012). FRAGSTATS v4: spatial pattern analysis program for categorical and continuous maps. Computer Software Program Produced by the Authors at the University of Massachusetts, Amherst. https://fragstats.org/index.php/documentation
  32. Ming, G., Wenbing, Y., Mingguo, M., & Xin, L. (2008). Study on the oasis landscape fragmentation in northwestern China by using remote sensing data and GIS: a case study of Jinta oasis. Environmental Geology, 54(3), 629–636. https://doi.org/10.1007/s00254-007-0830-7
  33. Mohamed Gherbi. (2015). Instruments of Urban Planning in Algerian City: Reality and Challenges. Journal of Civil Engineering and Architecture, 9(7), 807–812. https://doi.org/10.17265/1934-7359/2015.07.007
  34. Mörtberg, U. M., Balfors, B., & Knol, W. C. (2007). Landscape ecological assessment: A tool for integrating biodiversity issues in strategic environmental assessment and planning. Journal of Environmental Management, 82(4), 457–470. https://doi.org/https://doi.org/10.1016/j.jenvman.2006.01.005
  35. Norton, B. A., Evans, K. L., & Warren, P. H. (2016). Urban Biodiversity and Landscape Ecology: Patterns, Processes and Planning. Current Landscape Ecology Reports, 1(4), 178–192. https://doi.org/10.1007/s40823-016-0018-5
  36. O’Neill, R. V., Krummel, J. R., Gardner, R. H., Sugihara, G., Jackson, B., DeAngelis, D. L., Milne, B. T., Turner, M. G., Zygmunt, B., Christensen, S. W., Dale, V. H., & Graham, R. L. (1988). Indices of landscape pattern. Landscape Ecology, 1(3), 153–162. https://doi.org/10.1007/BF00162741
  37. Phiri, D., & Morgenroth, J. (2017). Developments in Landsat Land Cover Classification Methods: A Review. Remote Sensing, 9(9), 967. https://doi.org/10.3390/rs9090967
  38. Rezzoug, A. (2013). Laghouat : de l’oasis à la fabrication durable de la métropole (Laghouat: from oasis to sustainable metropolis). Thesis dissertation. Univ. Paris 10
  39. Richards, J. A., & Jia, X. (2006). Remote Sensing Digital Image Analysis: An Introduction (5th ed.). Springer. https://doi.org/10.1007/978-3-642-30062-2
  40. Sidi Boumedine, R. (2013). L’urbanisme en Algérie, échec des instruments ou instruments de l’échec (Urban planning in Algeria, failure of instruments or instruments of failure). Les alternatives urbaines
  41. Southworth, J., Nagendra, H., & Tucker, C. (2002). Fragmentation of a Landscape: Incorporating landscape metrics into satellite analyses of land-cover change. Landscape Research, 27(3), 253–269. https://doi.org/10.1080/01426390220149511
  42. Sun, B., & Zhou, Q. (2016). Expressing the spatio-temporal pattern of farmland change in arid lands using landscape metrics. Journal of Arid Environments, 124, 118–127. https://doi.org/https://doi.org/10.1016/j.jaridenv.2015.08.007
  43. Theodorou, P. (2022). The effects of urbanisation on ecological interactions. Current Opinion in Insect Science, 52, 100922. https://doi.org/https://doi.org/10.1016/j.cois.2022.100922
  44. Trinder, J., & Liu, Q. (2020). Assessing environmental impacts of urban growth using remote sensing. Geo-Spatial Information Science, 23(1), 20–39. https://doi.org/10.1080/10095020.2019.1710438
  45. Turner, M. G., & Gardner, R. H. (1991). Quantitative methods in landscape ecologythe analysis and interpretation of landscape heterogeneity. Springer-Verlag
  46. Turner, M. G., & Gardner, R. H. (2015a). Introduction to Landscape Ecology and Scale. In M. G. Turner & R. H. Gardner (Eds.), Landscape Ecology in Theory and Practice (pp. 1–32). Springer New York. https://doi.org/10.1007/978-1-4939-2794-4_1
  47. Turner, M. G., & Gardner, R. H. (2015b). Landscape Metrics. In M. G. Turner & R. H. Gardner (Eds.), Landscape Ecology in Theory and Practice: Pattern and Process (pp. 97–142). Springer New York. https://doi.org/10.1007/978-1-4939-2794-4_4
  48. UN Environment. (2019). Global Environment Outlook – GEO-6: Healthy Planet, Healthy People. https://doi.org/10.1017/9781108627146
  49. UN-Habitat. (2020). World Cities Report 2020: The Value of Sustainable Urbanization. https://unhabitat.org/world-cities-report-2020-the-value-of-sustainable-urbanization
  50. Wahyudi, A., Liu, Y., & Corcoran, J. (2019). Combining Landsat and landscape metrics to analyse large-scale urban land cover change: a case study in the Jakarta Metropolitan Area. Journal of Spatial Science, 64(3), 515–534. https://doi.org/10.1080/14498596.2018.1443849
  51. Wang, C., Wang, Y., Wang, R., & Zheng, P. (2018). Modeling and evaluating land-use/land-cover change for urban planning and sustainability: A case study of Dongying city, China. Journal of Cleaner Production, 172, 1529–1534. https://doi.org/https://doi.org/10.1016/j.jclepro.2017.10.294
  52. Weng, Y.-C. (2007). Spatiotemporal changes of landscape pattern in response to urbanization. Landscape and Urban Planning, 81(4), 341–353. https://doi.org/10.1016/j.landurbplan.2007.01.009
  53. Wilson, J. S., Clay, M., Martin, E., Stuckey, D., & Vedder-Risch, K. (2003). Evaluating Environmental Influences of Zoning in Urban Ecosystems with Remote Sensing. Remote Sensing of Environment, 86(3), 303–321. https://doi.org/10.1016/S0034-4257(03)00084-1
  54. Wu, J. (2013). Key concepts and research topics in landscape ecology revisited: 30 years after the Allerton Park workshop. Landscape Ecology, 28(1), 1–11. https://doi.org/10.1007/s10980-012-9836-y
  55. Wulder, M. A., Masek, J. G., Cohen, W. B., Loveland, T. R., & Woodcock, C. E. (2012). Opening the archive: How free data has enabled the science and monitoring promise of Landsat. Remote Sensing of Environment, 122, 2–10. https://doi.org/https://doi.org/10.1016/j.rse.2012.01.010
  56. Xie, Y., Gong, J., Sun, P., & Gou, X. (2014). Oasis dynamics change and its influence on landscape pattern on Jinta oasis in arid China from 1963a to 2010a: Integration of multi-source satellite images. International Journal of Applied Earth Observation and Geoinformation, 33, 181–191. https://doi.org/https://doi.org/10.1016/j.jag.2014.05.008
  57. Xie, Y., Gong, J., Sun, P., Gou, X., & Xie, Y. (2016). Impacts of major vehicular roads on urban landscape and urban growth in an arid region: A case study of Jiuquan city in Gansu Province, China. Journal of Arid Environments, 127, 235–244. https://doi.org/https://doi.org/10.1016/j.jaridenv.2015.12.002
  58. Young, C., Jarvis, P., Hooper, I., & Trueman, I. C. (2009). Urban landscape ecology and its evaluation : a review. New York : Nova Science. http://hdl.handle.net/2436/92006
  59. Zhang, F., Tashpolat, T., Kung, H., & Ding, J. (2010). The change of land use/cover and characteristics of landscape pattern in arid areas oasis: An application in Jinghe, Xinjiang. Geo-Spatial Information Science, 13(3), 174–185. https://doi.org/10.1007/s11806-010-0322-x

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