Research Group 2 

: Ecology/water environment prediction 

'Ecology/water environment prediction,' three research topics will be studied; vegetation and eco-system analysis and prediction due to climate change, water and soil chemistry characteristics change analysis, and eco-system/water environment prediction model development. The feedback process of water and soil chemistry characteristic change to eco-system and water environment which leads to climate change will be studied in depth.

Research Group 2-1

: Prediction and Monitoring of Changes in Vegetation and Ecosystem in Response to Climate Change

 

Purpose

  • Climate change affects all components of the global environment system, especially organisms. The aim of this study is to monitor and predict the response of organisms to climate change such as phenology, habitat analysis and genetic difference.
                                                                                     
  • Building on the results from the pilot survey at the intensive monitoring site as well as the instrumental tests during the first year, we aim (1) to establish a real-time monitoring system combining soil CO2 efflux and hydrologic C export and (2) to collect baseline data essential in elucidating mechanisms for the disturbance in the C cycle caused by climate variability and extremes.

 

contents

  • Climate change affects all components of the environment especially in organisms. Therefore we will study the phenology of organisms in the Korean Peninsula. We are planning to conduct the time series analysis with statistical methods to predict in advance. Moreover, habitat use patterns and genetic difference analysis will be studied to understand the organism's response to climate change.                                                                                      
  • Establishment and initiation of a real-time monitoring system combining soil CO2 efflux and hydrologic C export: a long-term (> 3 yr) monitoring will be initiated using an automated soil respiration chamber combined with a probe measuring Stream-water dissolved and particulate organic C.                                                                                                                         
  • Analysis of disturbances in the soil C cycle caused by climate variability and extremes: baseline monitoring data will be collected to analyze disturbances in the C cycle, including rapid changes in soil CO2 efflux and hydrologic C export during rapidly changing and/or extreme events such as droughts and heavy rainfalls.                                                                                                                                              
  • International collaboration: In collaboration with the labs in the University of Bayreuth, Germany, the advanced tachniques related to C cycle monitoring as well as the water flow data obtained from a V-notch weir jointly established at the intensive monitoring site will be studied.

 

Expected Contribution

  • Long-term phenology has focused on the response of organisms to climate change. We also have interests in integrating phenological, ecological and molecular studies to predict response of organisms to global warming as part of the longer term conservation efforts.
                                                                                                        
  • Through a quantitative understanding of disturbances in the C cycle by climate variability and extremes, the results can provide baseline data essential for establishing climate change adaptation strategies in the forest sector.
                                                                                                          
  • By analyzing the interactions between the atmosphere, terrestrial and aquatic ecosystems under a changing climate with long-term monitoring data of changes in soil C stocks and hydrologic C export, the results can be used as input data for other project components focused on the soil and aquatic environment.

 

 

 Research Group 2-2

:  Changes in Aqueous Environment and Soil Reactions in ecosystem according to     Climate Change

 

Purpose

The main purpose of this study is to find the influence of various substances in aqueous environment according to the temperature. Climate change has influence on the concentration of carbon dioxide in the atmosphere, and this would cause the change of the condition of the water environment. The carbonate system, one of the important system in aqueous environment, is chosen to figure out what would happen due to climate change and the concentration of carbon dioxide in atmosphere. Furthermore, the Pourbaix diagrams of some important ions in water environment will be studied.

 

contents

Climate change affect the concentration and the formula of various ions that exists in aqueous environment. Especially, the change of carbon dioxide concentration in atmosphere is considered. Therefore, carbonate system, one of the most important systems in nature, is chosen to further the experiments. By using the data and doing some experiments, the influence on carbonate system due to the concentration of carbon dioxide will be analyzed. In addition, climate change would directly impact on the temperature of water environment, and this would change the formula of ionic species in aqueous system. Therefore, the study will try to figure out what changes would occur and influence the other substances as well as the environment. Furthermore, the study plans to make Pourbaix diagrams of several ions that existing in water environment according to the temperature. As Pourbaix diagrams show the stability of ions by using equations and potential, it will provide proper information about the characteristics of water environment according to the temperature. Therefore, this study will try to draw Pourbaix diagrams of some ions that is an important part in aqueous system.

 

Expected Contribution

The research for this year is separated into two parts. One part is to figure out the influence of climate change and carbon dioxide's concentration on carbonate system in aqueous system. Another part is to compare Pourbaix diagrams of substances in water environment according to the temperature. It is believed that the result will provide enough information of temperature effects to the water environment. Furthermore, we can assume that there will be sufficient information for other researches and experiments about aqueous system.

 

 

 

Research Group 2-3

:  Development and Application of Watershed and Water Quality Model for Climate Change

 

 Purpose

Climate change caused by global warming has brought a rise in the temperature, increase of severe rainfall and drought, and intensified both interannual and intraseasonal precipitation variability. This climate change affects plant life in terms of growth and evapotranspiration, which could change biogeochemistry of the watershed. The change of biogeochemistry both in the watershed and in the water accompanied with precipitation pattern may influence the quality of water. Therefore, it is necessary to predict and diagnose the change of watershed and water quality in response to the climate change.

 

contents

  • Climate change accompanied by rising temperature, increase of severe rainfall and drought, and intensified interannual and intraseasonal precipitation variability could directly influence the plant growth and the evapotranspiration of the watershed and indirectly the anairobic mineralization metabolism of the sediments. The altered anaerobic mineralization metabolism affects production of CO2 and CH4, which, in turn, changes green house gas(GHG) concentration in the atmosphere. In order to understand the changes of watershed in response to the climate change, anaerobic mineralization metabolism under the controlled environment will be studied in depth.                                                                                                                                         
  • The change of biogeochemistry in both the watershed and in the water accompanied with precipitation pattern may influence the quality of water. To predict and diagnose the change of watershed and water quality in response to the climate change caused by global warming, it is essential to develop  the changes of anaerobic mineralization metabolism under the variable environment integrated water resources management system(IWRMS) by combining watershed model and water quality model.
                                                                                                                      
  • This year, laboratory experiment will be developed to quantify proportions of carbon metabolism mediated by NO3- reducers, Fe(III) reducers, and methanogens in the aquatic ecosystem which will be used for micro/mesocosm studies. In addition, we will develop integrated database (DB) for the integrated water resources management system(IWRMS) to better estimate the impact of climate change on the quality of the surface water.

 

Expected Contribution 

  • Scientific/technological: Understanding of water system interactions and feedback processes and establishment of interactive water quality integrated prediction system.
                                                                                                               
  • Industrial/economical: Commercialization of the developed system. Providing scientific information for the development of sustainable national industrial structure against climate change. Development of advanced biological and water resources management systems             
  • Social/cultural: Development of sustainable social system. Providing information on climate change and resultant environment changes on the wide aspects of social problems.