A Study of the Diversity of Marine Products in Japan approach from the Theory of the Food System

本研究旨在探讨日本海产品多样性的特点和趋势，并思考维持海产品多样性的食品体系问题。日本渔场的生物生产力和生物多样性很高。我们用各种各样的生物作为海产品。但这项研究显示，近年来海洋产品的多样性已经丧失。其因素被认为是以下三个原因。第一个原因是老龄化社会的推进和渔村生产年龄人口的减少使渔业生产力减弱。第二个原因是，小的海洋产品来有小的处理在一般的商品商店。第三个原因是近年来海产品的消费量减少。在这情况下，渔民亦致力扩大本地海产的消费。

The purpose of this study is to examine the characteristics and trends of the diversity of marine products in Japan, and to consider the problem of the food system that the diversity of marine products should be maintained. The bioproductivity and biodiversity are high in the fishing ground of Japan. We used a great variety of creatures as marine products. But this study revealed the diversity of marine products had been lost in recent years. Its factors are considered into the following three reasons. The first reason is that fishery productivity weakened by advancement of aging society and decline of population in production ages in fishing villages. The second reason is that minor marine products came to have little handling in the general merchandising store. The third reason is that the consumption of marine products has decreased in recent years. Under these circumstances, the fishermen are also putting much effort into the expansion of consumption of local marine products.