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我國的海岸线綿延達七千餘浬,漁場面積達四十三萬六千平方浬,佔全世界漁場面積的百分之二三·七,为世界第一;其他江河、湖沼的分佈为數亦很巨。在這些海洋、江河、湖沼中蘊藏着无窮盡的水產资源——魚、貝、藻類等。 魚、貝、藻類含有豐富营養料,對人民的营養上有着很大的作用。除此而外在医藥上(魚肝油、洋菜)、工業上(魚油、魚膠等)亦有重大的用途。普通漁輪或漁船在出海生產時,並不是到達海洋的任何處所下網,都可得到大量魚類;必需在事前先了解什麼地方是大量魚類活動的場所(漁場),進行捕撈方可達到多生產的目的。 漁場舆魚類的洄游、棲息有着密切的關係。為了要探測漁場,提高我們的生產量,雖然可根據海洋調查研究(包括水溫、水色、水質、水深、底質、海流、浮
The coastline of China stretches for more than 7,000 miles, and the area of the fishery reaches 436,600 square feet, accounting for 23.7 per cent of the world’s total fishery area. It is the largest in the world; the distribution of other rivers and lakes is also significant. Very large. In these oceans, rivers, and lakes, there are endless fisheries resources – fish, shellfish, and algae. Fish, shellfish and algae are rich in nutrients and have a great effect on the nutrition of the people. In addition to this, there are also significant uses in medicine (cod liver oil, seaweed), industrial (fish oil, fish gelatin, etc.). When an ordinary fishing vessel or fishing vessel is produced in the sea, it is not possible to get a large amount of fish from any place that reaches the sea. It is necessary to know beforehand beforehand what is a large number of fish activities (fisheries). purpose. There is a close relationship between fish migration and habitat in fisheries. In order to detect fisheries and increase our production capacity, we can study according to marine surveys (including water temperature, water color, water quality, water depth, sediment quality, current, and float