Japan Geoscience Union Meeting 2019

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[E] Oral

A (Atmospheric and Hydrospheric Sciences ) » A-HW Hydrology & Water Environment

[A-HW22] Materials transport and nutrient cycles in watersheds; from headwaters to coastal seas

Thu. May 30, 2019 1:45 PM - 3:15 PM 201B (2F)

convener:Masahiro Kobayashi(Forestry and Forest Products Research Institute), Seiko Yoshikawa(Institute for Agro-environmental Sciences, National Agriculture and Food Research Organization), Jun Yasumoto(University of the Ryukyus, Faculty of Agriculuture), Adina Paytan(University of California Santa Cruz), Chairperson:Yoshikawa Seiko(Institute for Agro-environmental Sciences, National Agriculture and Food Research Organization)

2:15 PM - 2:30 PM

[AHW22-20] Development and Application of a System for Measurement of Total Load of Water Quality

★Invited Papers

*Keiji Takase1, Yuko Itoh2 (1.Ishikawa Prefectual University, 2.Forestry and Forest Products research Institute, Japan)

Keywords:Water Quality, Concentration, Total load of water quality, System for collecting water, Forested watershed

Conservation and management of water quality is most important to conserve the water environment as well as to secure good water resource. Water quality has been conventionally controlled by regulation of emission concentration. On the other hand, divergence of emission material and increase of waste water in recent years indicates that the regulation of total emission will be most important. In addition, the knowledge of total load of a material such as nitrogen and phosphorous is fundamental to understand a cycle and mass balance of the material. However, the measurement of water quality load is not so easy because it requires much of time and labor well as high cost. So, we established a new system by which we could easily determine the total load of water quality. In this paper, the system is applied in a forested watershed to discuss validity of the system.