作 者：
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机构地区：
中国水产科学研究院南海水产研究所
出 处：
《南方水产》
2009年第5期32-37,共6页
摘 要：
根据2006年10月到2007年9月在南海北部大陆架海域进行的4个航次底拖网调查资料,分析南海北部大陆架海域渔业资源的种类组成和群落特征。结果显示,渔获种类秋季最多,冬季最少,渔获物中鱼类占总渔获种类的79.42%;相对生物量指数与相对生物密度指数的季节变化趋势相一致,最高值在夏季,最低值在冬季;优势种(IRI>500)为杜氏枪乌贼Loligo duvaucelii、六指马鲅Polynemus sextarius、粗纹鲾Leiognathus lineola-tus和中国枪乌贼L.chinensis;主要种类(100
Based on four bottom trawl surveys in the continental shelf of northern South China Sea from October 2006 to September 2007, species composition and community characteristics of catch were analyzed. The results showed that species of fishery resources were found the most in autumn and the least in winter. The number of fish species accounted for 79.42% of the total fishery resources. The relative biomass index and relative density index showed the same seasonal change, with the highest index in summer and the lowest in winter. The dominant species were Loligo duvaucelii, Polynemus sextarius, Leiognathus lineolatus and L. chinensis, whose IRI indexes were higher than 500. The main species were P. sextarius, Portunus sanguinotentus, Upeneus bensasi, Nemipterus bathybius, Acropoma hanedai , L. ruconius , L. edulis , Navodon xanthopterus , Champsodon atridorsalis , Acropoma hanedai , et al, whose IRI indexes were between 100 to 500. The number of species, the species richness index D, Shannon-Wiener index H＇ and species evenness index J＇ got the highest records in autumn 2006, and the lowest in winter and spring.
关 键 词：
渔业资源
生物多样性
南海北部
领 域：
[农业科学]
[农业科学]
