Abstract
Increasing frequency of heavy rainfall associated with climate change such as global warming is pointed out, subsequently impacts on its various industries are concerned, In Okinawa, since to the high temperature and heavy rainfall of the subtropical climate, erosion frequency occurs that weak red soil (Kunigami Maage) flows out from agricultural land, construction site and so on. This serious problem has not been resolved since 1950s. Moreover, not only limited in Okinawa, but also the weak soil erosion problem occurs in Kyushu Island, which also should be concerned in the future.
In addition, by taking field test at farmland in Ginoza-son, Kunigami-gun, Okinawa and investigating the relation between rainfall and soil erosion, we are trying to grasp the soil erosion mechanism with climate change.
