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川を調べる【Study a river】

posted Aug 15, 2017, 4:30 PM by Yoshitaka Uchida Hokudai

     Here I talk about a field study, conducted by the whole team. We study nitrogen cycle, as mentioned earlier. Nitrogen becomes soluble to water as well as several types of gases, and this characteristic makes things difficult but also interesting. For example, livestock farming without concerning the impact to the environment can negatively impact fishery industry through nitrogen leached to rivers and oceans. However, some of the nitrogen becomes gas during this process (nitrogen goes from farms to ocean). 

     We are interested in how these processes are occurring along a river. We camped and investigated the soil along the river. The river was on the eastern side of Hokkaido, and my students cooperated well, to be safe. We found bamboo trees, some broad leaf trees as well as wetlands. I am sure these different ecosystems differently influence how nitrogen becomes gases. 

   This research is important to understand how to manage rivers. Also, I loved seeing students helping each other during this type of big field survey.