Fisheries in China: progress, problems, and prospects
过度开采
海水养殖
渔业
水产养殖
多元文化
中国
鱼类资源
地理
鱼
生物
考古
作者
Yiguang Zhong,G. Power
出处
期刊:Canadian Journal of Fisheries and Aquatic Sciences [Canadian Science Publishing] 日期:1997-01-01卷期号:54 (1): 224-238被引量:59
标识
DOI:10.1139/f96-265
摘要
China is the leading contributor to world fisheries production. This has been achieved by intensive exploitation of territorial and distant marine waters, by considerable development of mariculture, by extensive use and manipulation of freshwater fish stocks, and by extraordinary expansion and application of better techniques to freshwater culture. Marine capture fisheries were most important until the 1980s when, in response to overexploitation of wild stocks, emphasis shifted to aquaculture. By 1993, aquaculture accounted for more than half of China's fisheries production in spite of considerable expansion of its capture fisheries. Freshwater culture was the biggest fraction, producing 7.9 million t (36.7%). The highest yields were from ponds, followed by reservoirs, lakes, and river channels. Yields per unit area greatly increased because of better rearing methods, polyculture, integrated farm - fish pond culture, introductions of new strains and species, and intensification of culture techniques. Present trends suggest that capture fisheries are approaching their limits. New investments are likely to concentrate on aquaculture. There are risks from disease, deteriorating water quality, use of suboptimal areas, and the demands of increasingly affluent Chinese people. The fisheries sector aims to maximize economic, social, and ecological benefits for Chinese society.