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Strategic Land-Use Planning in a Changing Climate—Adapting to the Spatial Dynamics of Risk in Ho Chi Minh City

  • Harry Storch
  • Nigel Downes
Conference paper

Abstract

For Asian cities situated within mega-urban coastal regions, such as Ho Chi Minh City, there is a pressing need for adaptation to climate change to focus on minimising exposure and reducing vulnerability by increasing urban resilience to the future impacts of climate extremes. Scientifically predicted are the direct impacts of climate change on populations (i.e. by urban flooding) and the indirect effects through impacts on climate-sensitive urban sectors (i.e. housing, energy supply systems). Geographic context gives rise to the biophysical exposure, which includes factors such as topography, connectivity and urban structures, all of which can be mediated by spatial planning or construction technologies. Further the urban fabric underlies the patterns of social vulnerability, including issues such as population density, levels of income and education as well as institutional capacities. Here spatial planning measures to enhance adaptive capacity should be directed towards decreasing biophysical exposures and the social vulnerability from the viewpoint of place-based risk assessments. Key urban impact and vulnerability indicators vary considerably from settlement to settlement and even within settlements. The location, the built urban structures, the dominant building types, the social-economic characteristics and institutional capacities are all highly dynamic factors with an important spatio-temporal dimension that affects ultimately the overall exposure, vulnerability and environmental performance of a settlement. Rapid urbanisation driven by fast changes in socioeconomic development conditions are the key factors influencing the future levels in both exposure and vulnerability to climate extremes. Our impact assessment study highlights, that the influence of non-climatic stressors—like urbanisation as the spatial manifestation of socio-economic processes is still widely under acknowledged. Traditionally only snapshots of the current urban situations have been partially integrated into risk assessments, resulting often, for highly dynamic urban regions, in an overestimation of climate extremes as a stressor of risk. An urgent need has arisen to readdress and improve the scientific methods and datasets to examine these key non-climatic drivers of future urban risk and to assess their relative importance for risk propagation compared to primary changes in climate. The most significant issue here is the integration of the future dynamics of urban development processes.

Keywords

Urban Development Flood Risk Floor Area Ratio Impervious Surface Coverage Rapid Urban Growth 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors would like to acknowledge the assistance and cooperation of the Ho Chi Minh City Department of Natural Resource and Environment. The contribution is based on results of the research project “Integrative Urban and Environmental Planning for Adaptation of Ho Chi Minh City to Climate Change” which is funded as part of the “Future Megacities” programme by the German Federal Ministry of Education and Research (BMBF). The authors would like to express their gratitude to Le Thanh Hoa, Thong Nhat Tran and Hendrik Rujner who partly supported the geoprocessing.

References

  1. 1.
    Downes N, Storch H (2010) Adaptation response to climate change at the Urban level—spatial information needs for climate-related decision support in Mega-Urban regions. Report of the German-Vietnamese Workshop held on 9th July 2010 at IMHEN in Hanoi, Vietnam. Cottbus. http://www-docs.tu-cottbus.de/megacity-hcmc/public/04_Results/Ger_Vn_Workshop_Hanoi_2010/Workshop_Report_090710.pdf, accessed 25/11/2013.
  2. 2.
    Downes N, Storch H, Rujner H, Schmidt M (2011) Spatial indicators for assessing climate risks and opportunities within the Urban environment of Ho Chi Minh City, Vietnam. In: Isocarp (eds) E-Proceedings of 47th ISOCARP Congress 2011 “Liveable Cities Urbanising World, Meeting the challenge” Wuhan China, Case Study Platform www.isocarp.net and Congress CD, p 13. ISOCARP, The Hague
  3. 3.
    Fünfgeld H (2011) Introduction: approaches to climate change adaptation in cities. In: Otto-Zimmermann K (ed) Resilient cities: cities and adaptation to climate change, Proceedings of the Global Forum 2010, Local Sustain 1:399–400.Springer, Berlin. doi:10.1007/978-94-007-0785-6_40Google Scholar
  4. 4.
    Heinrichs D, Aggarwal R, Barton J, Bharucha E, Butsch C, Fragkias M, Johnston P, Kraas F, Krellenberg K, Vogel J, Lampis A, Ooi GL (2011) Adapting cities to climate change: opportunities and constraints. In: Hoornweg D, Freire M, Lee MJ, Bhada-Tata P, Yuen B (eds) Cities and climate change: responding to an urgent agenda. Publication from the Fifth Urban Research Symposium, World BankGoogle Scholar
  5. 5.
    Labaeye A, Brugmann J, Nguyen Van P, Bao T, Ly Khanh Tam T, Nguyen Anh T, Storch H, Schinkel S (2012) Reality check: Ho Chi Minh city, Vietnam. In: Otto-Zimmermann K (ed) Resilient cities 2. Local Sustain 2:367–376, Springer, Berlin. doi:10.1007/978-94-007-4223-9_38Google Scholar
  6. 6.
    MoNRE (Ministry of Natural Resources and Environment) (2009) Climate change, Sea Level Rise Scenarios for Vietnam, HanoiGoogle Scholar
  7. 7.
    Nguyen-Thanh S, Chi-Farn C, Cheng-Ru C, Li-Yu C, Bui-Xuan T (2012) Urban growth mapping from landsat data using linear mixture model in Ho Chi Minh city, Vietnam. J Appl Remote Sens 6(1). doi:10.1117/1.JRS.6.063543Google Scholar
  8. 8.
    Preston B, Kay R (2010) Managing climate risks in human settlements. In: Jubb I, Holper PN, Cai WJ (eds) Greenhouse 2009 Conference. pp 183–196Google Scholar
  9. 9.
    Rujner H (2011) GIS-based coupling of the water balance model ABIMO with Urban structure types of Ho Chi Minh City. In: German Academic Exchange Service (DAAD) (ed) (2011): “Future Megacities in Balance” Young Researchers Symposium in Essen, 9.–10. Oktober 2010, pp 58–63, Dok & Mat vol 66Google Scholar
  10. 10.
    Rujner H, Goedecke M, Storch H, Moon K, Downes N (2010) GIS-basierte Kopplung des Abflussbildungsmodells ABIMO mit dem stadtstrukturellen Planungsinformationssystem von Ho Chi Minh City (Vietnam). In: Strobl J, Blaschke T, Griesebner G (eds) Angewandte Geoinformatik 2010, Beiträge zum 22. AGIT-Symposium, Salzburg. Wichmann, Heidelberg, pp 545–551Google Scholar
  11. 11.
    Storch H (2007) GIS-based sustainability assessment of housing and settlement structures within the metropolitan area of Ho Chi Minh city. In: Zeil P, Kienberger S (eds) Geoinformation for development. Bridging the divide through partnerships, Wichmann, Heidelberg, pp 65–75Google Scholar
  12. 12.
    Storch H, Downes NK (2011) A scenario-based approach to assess Ho Chi Minh city’s Urban development strategies against the impact of climate change. J Cities 28(6):517–526. doi:10.1016/j.cities.2011.07.002 (Special Issue: Low Carbon Cities)CrossRefGoogle Scholar
  13. 13.
    Storch H, Downes N, Katzschner L, Thinh NX (2011) Building resilience to climate change through adaptive land use planning in Ho Chi Minh city, Vietnam. In: Otto-Zimmermann K (ed) Resilient cities: cities and adaptation to climate change, Proceedings of the Global Forum 2010, Local Sustain 1:349–363. Springer, Berlin. doi:10.1007/978-94-007-0785-6_35Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.Department of Environmental PlanningBrandenburg University of Technology CottbusCottbusGermany

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