国际水产品贸易发展趋势及政策研究
1国际水产品贸易发展趋势及政策研究中国水产学会一、世界水产品生产、消费及贸易状况（一）世界水产品生产持续稳定增长世界水产品生产持续稳定增长，2013年为19106万吨，比2000年增加了5460万吨，但增长仍主要源自养殖的贡献，捕捞产量总体上呈下降趋势，只是某些年份略有增长，2013年为9386万吨，比2000年的9352万吨仅增加30多万吨，比2012年增加了140多万吨；而养殖产量2013年较2000年增长了133%，2013年比2012年又增加了近700万吨（参见图1）。图1世界水产品产量构成及变化趋势（单位：万吨）（资料来源：FAO渔业统计年鉴。下图同。）亚洲国家对世界水产品生的贡献非...
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Charge uctuation and charge-resolved entanglement in a monitored quantum circuit with U1symmetry
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