Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Assessment of Environmental Flow Impacts for the Gosam Reservoir According to Climate Change

기후변화에 따른 고삼저수지의 환경유량 영향평가

  • Received : 2016.09.22
  • Accepted : 2016.10.26
  • Published : 2016.11.30
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Abstract

This study conducted a quantitative assessment on the environmental flows associated with climate change in the Gosam Reservoir, Korea. The application of RCP 8.5 climate change scenario has found that the peak value of High Flow Pulses has increased by 36.0 % on average compared to historical data (2001 ~ 2010), which is likely to cause disadvantage on flood control and management but the increase in peak value is expected to make a positive impact on resolving the issue of green algal blooms, promoting vegetation in surrounding areas and encouraging spawning and providing habitats for native species by releasing a larger amount of landslides as well as organic matters than the past. However, the decreasing pattern of the peak value of High Flow Pulses is quite apparent with the trend of delay on the occurrence time of peak value, necessitating a long-term impact analysis. The peak value of Large Floods shows a clear sign of decrease against climate change scenario, which is expected to lead to changes in fish species caused by degraded quality of water and decreasing habitats. A quicker occurrence of Small Floods is also expected to make an impact on the growth cycle of aquatic plants, and the reduction in occurrence frequency of Extreme Low Flows is to contribute to increasing the population of and raising the survival rate of native fish, greatly improving the aquatic ecosystem. The results of this study are expected to be useful to establish the water environment and ecological system in adapting or responding to climate change.

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References

  1. Cannon, A. J., S. R. Sobie, and T. Q. Murdock, 2015. Bias Correction of GCM Precipitation by Quantile Mapping: How Well Do Methods Preserve Changes in Quantiles and Extremes?. Journal of Climate 28(17): 6938-6959. https://doi.org/10.1175/JCLI-D-14-00754.1
  2. Choo, T. H., H. S. Ko, H. C. Yoon, H. S. Noh, and H. S. Son, 2015. The Estimation and Analysis of Miryang Dam Inflow based on RCP Scenario. Journal of the Korea Academia-Industrial cooperation Society 16(5): 3469-3476 (in Korean). https://doi.org/10.5762/KAIS.2015.16.5.3469
  3. Eum, H. I., A. J. Cannon, and T. Q. Murdock. Intercomparison of Multiple Statistical Downscaling Methods: Multi-Criteria Model Selection for South Korea. Stochastic Environmental Research and Risk Assessment, 1-21.
  4. Gao, Y., R. M. Vogel, C. N. Kroll, N. L. Poff, and J. D. Olden, 2009. Development of Representative Indicators of Hydrologic Alteration, Journal of Hydrology 374(1): 136-147. https://doi.org/10.1016/j.jhydrol.2009.06.009
  5. IPCC, 2014. Climate Change 2014: Synthesis Report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change [Core Writing Team, R.K. Pachauri and L.A. Meyer (eds.)]. IPCC, Geneva, Switzerland, 151 pp.
  6. Joen, B. S., 2009. Hydrometeorologic Policy Direction according to the Climate Change, Meteorological Technology & Policy 2(2): 1-2 (in Korean).
  7. Jung, I. W., B. J. Lee, T. H. Jun, and D. H. Bae, 2008. Hydrological Model Response to Climate Change Impact Assessments on Water Resources. Journal of Korea Water Resources Association 41(9): 907-917 (in Korean). https://doi.org/10.3741/JKWRA.2008.41.9.907
  8. Kim, B. S., B. K. Kim, and H. H. Kwon, 2011. Assessment of the Impact of Climate Change on the Flow Regime of the Han River Basin using Indicators of Hydrologic Alteration, Hydrological Processes 25(5): 691-704. https://doi.org/10.1002/hyp.7856
  9. Lee, J. K., 2013. The Research Report on Safety Assessment and Reinforcement Method in Small Dams and Reservoirs, 14-15. RD-13-R6-081. Korea Infrastructure Safety & Technology Corporation (in Korean).
  10. Ministry of Environment and National Institute of Environmental Research, 2015. Korean Climate Change Assessment Report 2014, 31-34. Incheon, Korea (in Korean).
  11. Moon, S. J., J. J. Kim, and B. S. Kang, 2012. Future Dam Inflow and water Quality in Hapcheon Dam Reservoir Projected using Downscaled RCM Model Output. 38th Korean Society of Civil Engineers Convention 581-584 (in Korean).
  12. Nam, W. H., E. M. Hong, T. Kim, and J. Y. Choi, 2014. Projection of Future Water Supply Sustainability in Agricultural Reservoirs under RCP Climate Change Scenarios. Journal of the Korean Society of Agricultural Engineers 56(4): 59-68 (in Korean).
  13. National Disaster Management Research Institute, 2013. Report: Levee Failure of the Sandae Reservoir in Gyeongju City, 2-6 (in Korean).
  14. Okkan, U. and G. Inan, 2015. Statistical Downscaling of Monthly Reservoir Inflows for Kemer Watershed in Turkey: Use of Machine Learning Methods, Multiple GCMs and Emission Scenarios, International Journal of Climatology 35(11): 3274-3295. https://doi.org/10.1002/joc.4206
  15. Park, K. B., K. S. Kim, S. H. Cha, and S. S. Ahn, 2015. Assessment on Flood Control Ability of Small Agricultural Reservoir due to Climate Change. 2015 Korean Society of Hazard Mitigation Conference 278-278 (in Korean).
  16. Park, J. Y., H. K. Joh, I. K. Jung et al., 2010. Modeling Downstream Flood Damage Prediction Followed by Dam-break of Small Agricultural Reservoir. Journal of the Korean Society of Agricultural Engineers 52(6): 63-73 (in Korean). https://doi.org/10.5389/KSAE.2010.52.6.063
  17. Poff, N. L., J. D. Allan, M. B. Bain et al., 1997. The Natural Flow Regime, BioScience 47(11): 769-784. https://doi.org/10.2307/1313099
  18. Poff, N. L., B. D. Richter, A. H. Arthington et al., 2010. The Ecological Limits of Hydrologic Alteration (ELOHA): A New Framework for Developing Regional Environmental Flow Standards, Freshwater Biology 55(1): 147-170. https://doi.org/10.1111/j.1365-2427.2009.02204.x
  19. Richter, B. D., J. V. Baumgartner, J. Powell, and D. P. Braun, 1996. A Method for Assessing Hydrologic Alteration within Ecosystems, Conservation Biology 10(4): 1163-1174. https://doi.org/10.1046/j.1523-1739.1996.10041163.x
  20. The Nature Conservancy (TNC), 2009. Indicators of Hydrological Alteration, Version 7.1. User's Manual.
  21. Wikipedia, Environmental flow. https://en.wikipedia.org/wiki/Environmental_flow#cite_note-16. Accessed 12 Sep. 2016.