During 1986-2006, fisheries in Tonkin Gulf had made rapid development. Total engine power increased 11.6 times while total catch only increased 2.9 times. Big increase in number of fishing boats has resulted to the overexploitation in near shore waters since 1995 and this situation has been spread out all over...
From 1991 to 2003, number of fishing boats increased from 43,940 to 83,122. The average power per boat increased from 18HP/boat to 49.3HP/boat. Fishing productivity seems to be gradually decreased from 0.89ton/HP to 0.35ton/HP. In this period, the yield of marine fisheries has been constantly increased with an annual average...