Impact of Urban Expansion and Agricultural Land Conversion on Ecosystem Services: A Comparative Assessment
DOI:
https://doi.org/10.29070/my7zw009Keywords:
Urban expansion, agricultural land conversion, ecosystem services, land-use change, land-cover change, biodiversity, carbon storage, water regulation, soil conservation, urbanisation, agricultural intensification, ecological restoration, sustainable land managementAbstract
Urban expansion and agricultural land conversion are among the most significant forms of contemporary land-use and land-cover change. Both processes are closely associated with population growth, economic development, infrastructure expansion, changing consumption patterns and increasing demand for food, housing and industrial space. Although urbanisation and agricultural development generate substantial socio-economic benefits, the conversion of forests, wetlands, grasslands and other natural or semi-natural areas can produce profound changes in ecosystem structure and functioning. This article comparatively assesses the effects of urban expansion and agricultural land conversion on ecosystem services, with particular emphasis on biodiversity conservation, carbon storage and sequestration, water regulation, soil conservation and associated cultural and provisioning services. The study adopts a descriptive, analytical and comparative approach based on established literature and international environmental assessments. It demonstrates that urban expansion generally produces highly persistent local ecological transformations through habitat destruction, soil sealing, fragmentation, impervious surfaces, pollution and modification of hydrological systems. Agricultural conversion affects a much larger global land area and influences ecosystem services through vegetation clearance, monoculture, intensive tillage, irrigation, agrochemical use, overgrazing and soil disturbance. However, unlike sealed urban surfaces, agricultural landscapes retain greater potential for ecological recovery through sustainable farming, agroforestry, conservation agriculture and regenerative land management. The analysis further establishes that the ecological consequences of both forms of conversion depend upon the type and condition of the ecosystem being replaced, the intensity and spatial configuration of the new land use, and the governance mechanisms applied. International experiences demonstrate that tropical forest conversion, peri-urban agricultural loss, wetland destruction, urban sprawl and agricultural intensification have generated different but interconnected environmental pressures across Asia, Africa, Europe, North America and Latin America. Land-use change is now regarded as the direct driver with the largest relative impact on terrestrial and freshwater ecosystems globally. The article concludes that sustainable development requires integrated spatial planning, compact and ecologically sensitive urbanisation, protection of productive agricultural land and high-value ecosystems, sustainable agriculture, restoration of degraded landscapes and recognition of ecosystem services in economic and legal decision-making.
Downloads
References
1. Daily, G. C. (Ed.). (1997). Nature's services: Societal dependence on natural ecosystems. Island Press.
2. Costanza, R., d'Arge, R., de Groot, R., Farber, S., Grasso, M., Hannon, B., Limburg, K., Naeem, S., O'Neill, R. V., Paruelo, J., Raskin, R. G., Sutton, P., & van den Belt, M. (1997). The value of the world's ecosystem services and natural capital. Nature, 387(6630), 253–260. https://doi.org/10.1038/387253a0
3. Vitousek, P. M., Mooney, H. A., Lubchenco, J., & Melillo, J. M. (1997). Human domination of Earth's ecosystems. Science, 277(5325), 494–499. https://doi.org/10.1126/science.277.5325.494
4. Lambin, E. F., Turner, B. L., Geist, H. J., Agbola, S. B., Angelsen, A., Bruce, J. W., Coomes, O. T., Dirzo, R., Fischer, G., Folke, C., George, P. S., Homewood, K., Imbernon, J., Leemans, R., Li, X., Moran, E. F., Mortimore, M., Ramakrishnan, P. S., Richards, J. F., … Xu, J. (2001). The causes of land-use and land-cover change: Moving beyond the myths. Global Environmental Change, 11(4), 261–269. https://doi.org/10.1016/S0959-3780(01)00007-3
5. Lal, R. (2004). Soil carbon sequestration impacts on global climate change and food security. Science, 304(5677), 1623–1627. https://doi.org/10.1126/science.1097396
6. Foley, J. A., DeFries, R., Asner, G. P., Barford, C., Bonan, G., Carpenter, S. R., Chapin, F. S., Coe, M. T., Daily, G. C., Gibbs, H. K., Helkowski, J. H., Holloway, T., Howard, E. A., Kucharik, C. J., Monfreda, C., Patz, J. A., Prentice, I. C., Ramankutty, N., & Snyder, P. K. (2005). Global consequences of land use. Science, 309(5734), 570–574. https://doi.org/10.1126/science.1111772
7. Millennium Ecosystem Assessment. (2005). Ecosystems and human well-being: Synthesis. Island Press.
8. Brauman, K. A., Daily, G. C., Duarte, T. K. E., & Mooney, H. A. (2007). The nature and value of ecosystem services: An overview highlighting hydrologic services. Annual Review of Environment and Resources, 32, 67–98. https://doi.org/10.1146/annurev.energy.32.031306.102758
9. Montgomery, D. R. (2007). Soil erosion and agricultural sustainability. Proceedings of the National Academy of Sciences of the United States of America, 104(33), 13268–13272. https://doi.org/10.1073/pnas.0611508104
10. Grimm, N. B., Faeth, S. H., Golubiewski, N. E., Redman, C. L., Wu, J., Bai, X., & Briggs, J. M. (2008). Global change and the ecology of cities. Science, 319(5864), 756–760. https://doi.org/10.1126/science.1150195
11. DeFries, R. S., Rudel, T., Uriarte, M., & Hansen, M. (2010). Deforestation driven by urban population growth and agricultural trade in the twenty-first century. Nature Geoscience, 3, 178–181. https://doi.org/10.1038/ngeo756
12. Seto, K. C., Güneralp, B., & Hutyra, L. R. (2012). Global forecasts of urban expansion to 2030 and direct impacts on biodiversity and carbon pools. Proceedings of the National Academy of Sciences of the United States of America, 109(40), 16083–16088. https://doi.org/10.1073/pnas.1211658109
13. Newbold, T., Hudson, L. N., Hill, S. L. L., Contu, S., Lysenko, I., Senior, R. A., Börger, L., Bennett, D. J., Choimes, A., Collen, B., Day, J., De Palma, A., Díaz, S., Echeverria-Londoño, S., Edgar, M. J., Feldman, A., Garon, M., Harrison, M. L. K., Alhusseini, T., … Purvis, A. (2015). Global effects of land use on local terrestrial biodiversity. Nature, 520(7545), 45–50. https://doi.org/10.1038/nature14324
14. d'Amour, C. B., Reitsma, F., Baiocchi, G., Barthel, S., Güneralp, B., Erb, K. H., Haberl, H., Creutzig, F., & Seto, K. C. (2017). Future urban land expansion and implications for global croplands. Proceedings of the National Academy of Sciences of the United States of America, 114(34), 8939–8944. https://doi.org/10.1073/pnas.1606036114
15. Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services. (2019). Global assessment report on biodiversity and ecosystem services. IPBES Secretariat.
16. Intergovernmental Panel on Climate Change. (2019). Climate change and land: An IPCC special report on climate change, desertification, land degradation, sustainable land management, food security, and greenhouse gas fluxes in terrestrial ecosystems. IPCC.
17. Food and Agriculture Organization of the United Nations. (2021). The state of the world's land and water resources for food and agriculture 2021: Systems at breaking point. FAO.
18. Intergovernmental Panel on Climate Change. (2022). Climate change 2022: Mitigation of climate change. Cambridge University Press.
19. United Nations Convention to Combat Desertification. (2022). Global land outlook 2: Land restoration for recovery and resilience. UNCCD.
20. Convention on Biological Diversity. (2022). Kunming–Montreal Global Biodiversity Framework. Secretariat of the Convention on Biological Diversity.
This work is licensed under a 