日本国における沿岸漁業の課題解決のた めの海洋深層水の利用(Utilization of deep-ocean water for the solution of coastal fishery problems in Japan)
- 標題
- 日本国における沿岸漁業の課題解決のた めの海洋深層水の利用(Utilization of deep-ocean water for the solution of coastal fishery problems in Japan)
- 作者
- 山 内繁樹、 筒井浩之(Shigeki Yamauchi, Hiroyuki Tsutsui)
- 文件屬性
- 日本研究
- 知識分類
- 基礎研究
- 出版年
- 2013
- 刊名
- 海洋深層水研究
- 卷
- 14
- 期
- 2
- 頁
- P90-91
- 點閱數
- 2424
摘要
日本の沿岸漁業生産は，1960年以降変動は認められるものの大きな変化はないことが知られている。しかし,この間の沿岸漁業者の減少は著しく主就業者數(65歲未満,ただし1968年以前60歲未満)は2008年では1963年の21%となっている。この間，老齢者就業者数(65歳以上，ただし1968年以前は60歳以上)は90%となっているが大きな変化とは言えない。生産一定と主就業者数の低下は1人あたりの生産性の増加を示すものであり生産性の増加は日本の経済上昇率とほぼ合致している。この事実は日本の沿岸操業働支が所定の生産量に対し経済成長とともに生産性を上げ労働力を減少させていることを示す。すなわち, 地域の衰退は生産性の向上と労働力に見合った生産量の増加が得られないところにある。この基本的構造を打開する深層水を含む海水利用の方向・手法lこっして提案する。
There has been no substantial change in the coastal fishing production of Japan since 1960. However， during this time the number of coastal fisherman has decreased remarkably. The number of primary workers (under age 65 or under age in pre 1 968 date) in 2008 was only 21 % of the 1 963 number. However， there has been no substantial change in the number of elderly fishermen .Their number in 2008 was 90% of the 1 963 number. Constant levels of production combined with a decrease in the number of primary workers suggest an increase in per capita productivity. Further， this increase in productivity almost exactly follows the rate of economic growth in Japan. This fact shows that Japan's coastal fishing regions are experiencing a decrease in manpower due to economic growth and increased productivity in contrast with constant production l巴vels. That is， the decline of the region is happening because there has been no increase in production to match manpower and improvements in productivity. To solve the problems caused by this basic structure， we propose directions and techniques for the use of seawater， including deep ocean water.
There has been no substantial change in the coastal fishing production of Japan since 1960. However， during this time the number of coastal fisherman has decreased remarkably. The number of primary workers (under age 65 or under age in pre 1 968 date) in 2008 was only 21 % of the 1 963 number. However， there has been no substantial change in the number of elderly fishermen .Their number in 2008 was 90% of the 1 963 number. Constant levels of production combined with a decrease in the number of primary workers suggest an increase in per capita productivity. Further， this increase in productivity almost exactly follows the rate of economic growth in Japan. This fact shows that Japan's coastal fishing regions are experiencing a decrease in manpower due to economic growth and increased productivity in contrast with constant production l巴vels. That is， the decline of the region is happening because there has been no increase in production to match manpower and improvements in productivity. To solve the problems caused by this basic structure， we propose directions and techniques for the use of seawater， including deep ocean water.