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Design Strategies to Enhance Resilience of Ecosystem Services in Urban Wetland - Using System Thinking -

생태계서비스 회복력 향상을 위한 도시 습지 설계 전략 - 시스템 사고를 활용하여 -

  • You, Soo-jin (Dept. of Environmental Science and Ecological Engineering, Graduate School, Korea University) ;
  • Ham, Eun-Kyung (Dept. of Environmental Science and Ecological Engineering, Graduate School, Korea University) ;
  • Lee, Jung-a (Landscape Ecological Lab, Dept. of Environmental Planning, Konkuk University) ;
  • Cho, Dong-Gil (NEXUS Design Centre) ;
  • Chon, Jin-hyung (Division of Environmental Science and Ecological Engineering, Korea University)
  • 유수진 (고려대학교 대학원 환경생태공학과) ;
  • 함은경 (고려대학교 대학원 환경생태공학과) ;
  • 이정아 (건국대학교 경관생태계획연구실) ;
  • 조동길 (넥서스환경디자인연구원(주)) ;
  • 전진형 (고려대학교 환경생태공학부)
  • Received : 2017.06.01
  • Accepted : 2017.08.28
  • Published : 2017.08.31

Abstract

The wetlands are facing environmental changes such as desiccation that occurs with the passage of time and reduced ecosystem services from wetlands in the city. In order to maintain the ecosystem services provided by wetlands in urban areas, a system thinking about the trade-off phenomenon of ecosystem services occurring as the wetlands undergo environmental changes is needed. Therefore, the purpose of this study is to develop strategies for wetland design using system thinking approach to enhance the resilience of ecosystem services degraded by the desiccation of wetlands and other disturbances. The objectives of this study include the system boundary and variables. Second, analyzing the dynamics of wetland design strategy. Third, it analyzes the trade-off phenomenon of ecosystem services in terms of the hydrology, hydric soil, and plants strategies to mitigate these effects. Fourth, wetland basic design to improve the resilience of ecosystem services. A wetland in Abuk-Mountain Neighborhood Park, Miryang-si, Gyeongsangnam-do, has been selected as a case study. Causal loop diagrams(CLDs) are used to analyze feedback in the wetland regime. In summary, hydrology, hydric soil, and plants is suggested as system boundaries to design plan. Design strategies for the wetland focused on robustness, redundancy, rapidity, and resourcefulness as a result of CLD analysis are first proposed in order to effectively maintain the wetland regime over the long term. Secondly, in a section related to hydrology, the CLD results show the trade-offs between provisioning-cultural services and regulating services. In order to control these services, a "water cycling system" has been implemented due to its strength in terms of robustness. The CLDs for hydric soil showed the trade-offs between regulating services and supporting services. An "installation of storm drainage for maintaining water levels" was selected due to the strength offered in terms of redundancy and rapidity. The CLDs for plants showed the trade-offs between provisioning - cultural services and regulating services. In order to control the strategic points, the "planting of indigenous vegetation" was suggested given the strength in terms of redundancy. In this study, a wetland design method is proposed that can improve the resilience of wetland ecosystem services by analyzing the dynamics overtime. The results of this research can theoretically be applied to help restore ecosystem services in wetlands using ecological landscape design. In addition, this study will contribute to reducing maintenance costs by improving wetland resilience.

Keywords

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