The Unexpected Role of an Urban Basin in a River Ecosystem: Gapcheon and Daejeon, Republic of Korea
Description
Location
Sketch
Information about lithology/geochemistry:
The lithology/geology of Daejeon Metropolitan City is mainly composed of Precambrian gneiss and Mesozoic Jurassic granite, and Precambrian metamorphic rocks (gneiss and schist) are mainly distributed in the northeastern part of the city and the Okcheon Belt mainly composed of metamorphic sedimentary rocks is distributed in the southeast and northeast of Daejeon.
Main Description
Enhance ecohydrological processes in novel ecosystem
YES
Apply complementary Ecohydrological processes in high impacted system
NO
This table presents the different categories of ecosystem services that ecosystem can provide, divided in:
Provisioning Services are ecosystem services that describe the material or energy outputs from ecosystems. They include food, water and other resources.
Regulating Services are the services that ecosystems provide by acting as regulators eg. regulating the quality of air and soil or by providing flood and disease control.
Ecosystem services "that are necessary for the production of all other ecosystem services". These include services such as nutrient recycling, primary production and soil formation.
Cultural Services corresponds nonmaterial benefits people obtain from ecosystems through spiritual enrichment, cognitive development, reflection, recreation, and aesthetic experiences.
EH Principles
Quantification of the hydrological processes at catchment scale and mapping the impacts
Ecological engineering (integration, dual regulation and biotechnologies in catchment scale for enhancement of ecological potential)
ECOHYDROLOGY ENGINEERING SOLUTIONS
Daejeon City has been selected as “Water Cycle Leading City” by the Korean government and has been financially supported approx. 25 milo. USD to install LID (Low Impact Development) facilities from 2016. However, the effectiveness and the feasibility of the installation of the ecohydrological structure is yet to be proved or monitored.
Ecohydrological Infrastructure
In order to manage the endemic plants of Gapcheon, a project to remove ecosystem-disturbing plants (thorn gourd, maple leaf ragweed, ragweed, etc.) is being promoted, and Tamnipdolbo provides a variety of spaces to not only citizens but also to wildlife such as habitat for migratory birds
Phytotechnology
Gapcheon Wetland is home to 448 species of animals and plants, including 29 species of birds and 23 species of fish. Its biological conservation value was recognized and it was designated as a national wetland protection area in June 2023. Gapcheon has a wide stream and high flow, and has a wide distribution of riverside grasslands and river vegetation, providing a habitat as well as a feeding ground for otters. There is also a group habitat for Maengkkongi (Kaloula borealis).
Faunatechnology
In the case of urban stream, maintenance of environmental flow is fairly difficult due to interruption of groundwater movement by building and decrease in infiltration due to increased pavement. Rainwater treatment and reuse can be a good alternative to manage this problem.
Hydrological Flow
Major Issues
Which: Despite of easy accessibility to the river, the poor water quality and ecosystem due to inappropriate management of incoming pollutants stands as a challenge
Expected Outcomes
The publicity effect of Daejeon, the tourism effect of Norubeol Garden (in progress), and national interest in Gapcheon is expected to be increased. In addition, it is expected that the conservation value as an important place for academic and research activities as well as the effect as a tourist attraction will increase due to the improvement of ecological value along with the demand for experiencing wetlands in the city.
Latest Results
Contacts
Dongah Nikki Ko, Eunjin Yu
- secretariat@ihpkorea.or.kr
- UNESCO IHP National Committee of the Republic of Korea
Social ecohydrological system
EH Objectives
EH Methodology
Catchment Ecohydrological sub-system
Objectives
Stakeholders
Catchment Sociological sub-system
Activities