... fish species composition 鱼种组成 These Native Species Composition 这些土着人种构成 Tree Species Composition 树种组成 ...
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composition of fish species 鱼类种群构成
After 20 century 70s, fish species composition significant changed on the basis of the species composition of fish-scale-deposition.
通过鱼鳞种类组成比例的改变，发现上世纪70年代后，鱼类资源结构发生了显著的变化。
According to the data selected from bottom trawl fishery resource monitoring in the East China sea from 1997 to 2000, the species composition and seasonal variation of small-sized fish were analysed.
根据1997 ~ 2000年东海区底拖网渔业资源调查资料，分析和讨论了东海区小型鱼类的种类组成和季节变化。
The results indicated that except reef fish, the seasonal changes of fishery species composition in seaweed bed (SB) were much more obvious than those out of the seaweed bed (OSB).
结果表明，枸杞岛海藻场内的渔业生物组成的季节变化比藻场外明显，但岩礁性鱼类除外；
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