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   平均丰度 在 水产和渔业 分类中 的翻译结果: 查询用时:2.205秒
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平均丰度    
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  average abundance
    Results showed that there was clearly seasonal change for average abundance of Chaetognatha that was autumn(540ind/10~(2)·m~(3))>summer(322ind/10~(2)·m~(3))>winter(235ind/10~(2)·m~(3))>spring(33ind/10~(2)·m~(3)).
    结果表明:毛颚类总丰度有明显的季节变化,4季平均丰度(不含台湾海峡水域)为秋季(540ind/102m3)>夏季(322ind/102m3)>冬季(235ind/102m3)>春季(33ind/102m3);
短句来源
    The species diversity index changes from 2.13 to 4.44.The results of comparative analysis show that the species number,the average abundance,the species diversity index and the average biomass of the ciliates in the cage fish culture farm are larger than those in the contrast sampling site.
    纤毛虫的最大丰度为28980 ind/L,最大生物量为353.1μg/L,物种多样性指数在2.13到4.44之间. 对网箱养鱼场样点和对照样点的纤毛虫群落结构的比较分析表明,网箱养鱼场样点纤毛虫群落的种类数、平均丰度、物种多样性指数和平均生物量均大于对照样点.
短句来源
  mean abundance
    The mean abundance, biomass and production of meiofauna are (1584±686) ind.
    小型底栖动物的平均丰度为(1584±686)ind.
短句来源
    Mean abundance of the parasite was more than 6.32 in almost all months,except for a low level of 0.46 in January 2002.Statistical analysis showed that changes in mean abundance of the parasite were significantly seasonal ((F=12.58)>F_(0.01[17,882])=1.98).
    平均丰度也是在2002年1月较低(0.46),其他月份都高于6.32,但感染丰度表现出显著的季节性变化(F=12.58>F0.01[17,882]=1.98)。
短句来源
    Compared with other studies, the results of present study are in the same magnitude. In terms of vertical distribution, 65.88% of total meiofauna is found in the surface sediment (0-2cm), 27.66% in 2-5cm sediment and 6.47% in 5-8cm sediment. The mean abundance of nematode is (1404 + 670) ind.
    10cm~(-2),自由生活海洋线虫占绝对优势,其平均丰度为(1404±670)ind.
短句来源
    The infection condition of Dusrongylides sp. (larva) in its host Monopterus albus from paddy - field was studied in Changde city, Hunan on May 2002. This result showed that the prevalence was 77.3 %, the mean intensity was 6.08 and the mean abundance was 4. 70. The infection condition was positively correlated with the body length of the host Monopterus albus .
    研究了5月份沅水下游常德稻田所产黄鳝对胃瘤线虫幼虫的感染情况. 结果表明,其感染率为77.3%,感染强度为6.08,平均丰度为4.70;
短句来源
    Mean abundance increases with the increases of host body length in a power function. The relationship model between mean abundance (M) of the acantho cephalan population and body length (L) of host fish are M = 7.6×10 -9 L 3.3830. The end of frequency distribution of the acanthocephalan popu lation in host population lengthens with the increases of host body length.
    种群的平均丰度随宿主体长的增加呈指数增加 ,其回归方程为M =7.6× 10 -9L3 .3 83 0 ; 随着黄鳝体长的增加 ,棘头虫种群在宿主中的频率分布的尾不断增长 ,即感染较多棘头虫的黄鳝所占比例增加 ;
短句来源
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  mean abundance
    The mean abundance, biomass and production of meiofauna are (1584±686) ind.
    小型底栖动物的平均丰度为(1584±686)ind.
短句来源
    Mean abundance of the parasite was more than 6.32 in almost all months,except for a low level of 0.46 in January 2002.Statistical analysis showed that changes in mean abundance of the parasite were significantly seasonal ((F=12.58)>F_(0.01[17,882])=1.98).
    平均丰度也是在2002年1月较低(0.46),其他月份都高于6.32,但感染丰度表现出显著的季节性变化(F=12.58>F0.01[17,882]=1.98)。
短句来源
    Compared with other studies, the results of present study are in the same magnitude. In terms of vertical distribution, 65.88% of total meiofauna is found in the surface sediment (0-2cm), 27.66% in 2-5cm sediment and 6.47% in 5-8cm sediment. The mean abundance of nematode is (1404 + 670) ind.
    10cm~(-2),自由生活海洋线虫占绝对优势,其平均丰度为(1404±670)ind.
短句来源
    The infection condition of Dusrongylides sp. (larva) in its host Monopterus albus from paddy - field was studied in Changde city, Hunan on May 2002. This result showed that the prevalence was 77.3 %, the mean intensity was 6.08 and the mean abundance was 4. 70. The infection condition was positively correlated with the body length of the host Monopterus albus .
    研究了5月份沅水下游常德稻田所产黄鳝对胃瘤线虫幼虫的感染情况. 结果表明,其感染率为77.3%,感染强度为6.08,平均丰度为4.70;
短句来源
    Mean abundance increases with the increases of host body length in a power function. The relationship model between mean abundance (M) of the acantho cephalan population and body length (L) of host fish are M = 7.6×10 -9 L 3.3830. The end of frequency distribution of the acanthocephalan popu lation in host population lengthens with the increases of host body length.
    种群的平均丰度随宿主体长的增加呈指数增加 ,其回归方程为M =7.6× 10 -9L3 .3 83 0 ; 随着黄鳝体长的增加 ,棘头虫种群在宿主中的频率分布的尾不断增长 ,即感染较多棘头虫的黄鳝所占比例增加 ;
短句来源
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  average abundance
Free living marine nematodes were the most dominant group with an average abundance of (1.026 ± 0.206) × 106 ind m-2, accounting for 88.5% of total numbers, and an average of 85.4% lived in the surface layer (0-2 cm) of sediments.
      
Cell abundance ranged from 1.02 to 130.71 × 103 cells L-1 with a single peak on 6th Feb., and the average abundance was 28.11 ± 26.01 × 103 cells L-1 (n=90) during the winter time.
      
The constituents of plant ash have been discussed in relation to soil chemistry, pH, climate, mobility, average abundance in plant ash and exclusion mechanism of the flora.
      
In the population studied, the Syllidae dominated (37% of total identified species);Fabricia sabella was the most common species throughout the cornice, its average abundance being 38% of the total number of individuals in the population.
      
A suite of 11 fucalean species were dominant to a depth of 10 m with an average abundance of 28 m-2, while one species, Carpophyllum flexuosum, occurred mostly in deeper water.
      
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  mean abundance
Its metallicity indicates that the object belongs to the old Galactic disk (the mean abundance of the iron-group elements V, Cr, and Fe for IRAS 23304+6147 is [X/H]=-0.61 dex).
      
The lanthanides are even less enhanced: for La, Ce, Pr, and Nd, the mean abundance relative to iron is [la/Fe]=+0.26.
      
The mean abundance of organisms was 637 ind/m2 and the mean biomass was 2.3 g/m2.
      
The component community is constituted by seventeen helminth species, which frequency and mean abundance show a bimodal pattern.
      
The prevalence and mean abundance of infectious GIT nematode larvae on the pasture were used as measures of pasture contamination.
      
更多          
  mean abundance
Its metallicity indicates that the object belongs to the old Galactic disk (the mean abundance of the iron-group elements V, Cr, and Fe for IRAS 23304+6147 is [X/H]=-0.61 dex).
      
The lanthanides are even less enhanced: for La, Ce, Pr, and Nd, the mean abundance relative to iron is [la/Fe]=+0.26.
      
The mean abundance of organisms was 637 ind/m2 and the mean biomass was 2.3 g/m2.
      
The component community is constituted by seventeen helminth species, which frequency and mean abundance show a bimodal pattern.
      
The prevalence and mean abundance of infectious GIT nematode larvae on the pasture were used as measures of pasture contamination.
      
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  其他


The present paper is based on materials collected in Chukchi Sea during the period from July to August 1999 on icebreaker the R/V "Xuelong" by Chinese First Arctic Scientific Expedition. A total 8 species of pelagic Hydromedusae were identified, of which 4 species belonged to Anthomedusae, 2 species to Leptomedusae, 1 species to Trachymedusae and 1 species to Narcomedusae, the Neoturris breviconis is recorded for the first time in Chukchi Sea. Their principal morphological characteristies are described and...

The present paper is based on materials collected in Chukchi Sea during the period from July to August 1999 on icebreaker the R/V "Xuelong" by Chinese First Arctic Scientific Expedition. A total 8 species of pelagic Hydromedusae were identified, of which 4 species belonged to Anthomedusae, 2 species to Leptomedusae, 1 species to Trachymedusae and 1 species to Narcomedusae, the Neoturris breviconis is recorded for the first time in Chukchi Sea. Their principal morphological characteristies are described and illustrated. The 8 species of Hydromedusae occurring in the Chukchi Sea all were cool water species, of which 6 species belong in neritic species, 2 species in ocean species. According to the geographic distribution of species, they may be divided into three groups: Arctic species, Arctic boreal species and Boreal temperate species. From the view point of zoogeography, species from these waters belong to the Arctic fauna. The abundance of Hydromedusae in Chukchi Sea was generally low, with a mean value of 108 ind./100m 3. The condition of distribution of individual number was due to distribution of dominant species. The Rathkea octopunctata and Aglantha digitale were dominant species. The vertical distribution of Aglantha digitale was inhabiting the 0-300m and having their quantitative maximum in the 50m to 100m.

本文报道 1 999年 7月至 8月我国首次北极科学考察期间“雪龙”号破冰船在楚科奇海采集的浮游水螅水母类及其分布。分析鉴定了 8种水螅水母 ,其中 4种属于花水母目 ,2种属于软水母目 ,1种属于硬水母目 ,1种属于筐水母目。短新塔水母在楚科奇海是首次记录。简要记述了这些种类的形态特征并附图。楚科奇海这 8种水螅水母都是冷水种 ,其中 6种为近岸性的 ,2种是大洋性的。根据其地理分布可分为北极种、北极 -北方种和北方寒温带种等 3个类型 ,从动物地理观点看 ,楚科奇海的水螅水母类应属于北极区系。楚科奇海水螅水母类的丰度一般较低 ,其平均丰度为 1 0 8个 /1 0 0 m3,水平分布状况主要由优势种所左右 ,八斑腕唇水母和指腺华丽水母为优势种。垂直分层采样结果表明 ,指腺华丽水母分布于 0~ 30 0 m,其中以 50~ 1 0 0 m居多

The present paper studied the vertical distribution of Hydromedusae and Siphonophora from western waters of Taiwan Strait in Summer and Autumn, The results showed that the species number of these two groups of zooplankton inhabited chiefly in the middle layer(10~25m) and upper layer (above 10m)and the maximum of their average abundance was in the upper 10m layer. It was due to distribution of individual number of major species such as Liriope tetraphylla, Solmundella bitentaculata, Diphyes chamissonis and Sulculeolaria...

The present paper studied the vertical distribution of Hydromedusae and Siphonophora from western waters of Taiwan Strait in Summer and Autumn, The results showed that the species number of these two groups of zooplankton inhabited chiefly in the middle layer(10~25m) and upper layer (above 10m)and the maximum of their average abundance was in the upper 10m layer. It was due to distribution of individual number of major species such as Liriope tetraphylla, Solmundella bitentaculata, Diphyes chamissonis and Sulculeolaria chuni et al. The relations of the vertical distribution of Hydromedusae and Siphonophora with temperature, light intensity and food are discussed.[WT5F1]

本文报道了台湾海峡西部海域夏、秋季水螅水母类和管水母类的垂直分布 ,结果表明 :这两类浮游动物的种类数一般以中层 ( 1 0~ 2 5m)和上层 ( 0~ 1 0m)居多 ,而平均丰度则以上层最大 ,这主要是由于主要种四叶小舌水母、两手筐水母、双生水母和长囊无棱水母多栖息于上层之故 .本文还讨论了这两类水母垂直分布的类型及与水温、光强和饵料的关系

The benthic meiofauna was quantitatively investigated in the spawning ground of anchovy (Engraulis japanicus) in the Southern Yellow Sea during the cruise by《Bei dou》in June, 2000. The results showed that the meiofauna average abundance and biomass were 0.81×10 6 ind·m -2 (±0.41×10 6 ind·m -2 ), and 1.22g·dwt·m -2 respectively. The distribution patterns for abundance and biomass were generally the same, that is the high values occurred at stations 7494, 7994, 8594, 11394 along the of...

The benthic meiofauna was quantitatively investigated in the spawning ground of anchovy (Engraulis japanicus) in the Southern Yellow Sea during the cruise by《Bei dou》in June, 2000. The results showed that the meiofauna average abundance and biomass were 0.81×10 6 ind·m -2 (±0.41×10 6 ind·m -2 ), and 1.22g·dwt·m -2 respectively. The distribution patterns for abundance and biomass were generally the same, that is the high values occurred at stations 7494, 7994, 8594, 11394 along the of 50m isobath. Pearson's correlation analysis showed negative correlations between abundance and water depth (r,-0.555,P<0.05) but positive correlation with ch1 a (r, 0.486, P<0.05). There were also negative correlations between meiofaunal biomass and water depth, clay and water content (%) (r, 0.484-0.500, P<0.05). A total of eighteen meiobenthic groups were recognized. Free living marine nematode was the dominant group with a mean abundance of 0.6×10 6 ind·m -2 (±0.36×10 6 ind·m -2 ) constituting 73.8% of the total, the second and many other important groups were benthic copepods (18.7%), polychaetes (3.1%), kinorhychs (1.6%) and ostracods ( 1.1% ). Based on the biomass, polychaetes (29%), benthic copepods (23%) and nematodes (20%) were the main groups.

20 0 0年 6月在南黄海鱼产卵场 18个站位的调查结果表明 ,小型底栖生物的平均丰度为 0 .81× 10 6ind· m-2 (± 0 .4 1× 10 6ind· m-2 ) ,平均生物量为 1.2 2 g dwt· m-2 ,小型底栖生物的丰度和生物量的水平分布图型大体相似 ,即高的数量值分布在等深线 5 0 m以浅的与海岸线平行的74 94、7994、85 94、11394等站。小型底栖生物数量与 10种环境因子的 Pearson相关分析表明 ,丰度与水深呈负相关 (r,- 0 .5 5 5 ,P<0 .0 5 ) ,与 Chl- a呈正相关 (r,0 .4 86 ,P<0 .0 5 ) ;生物量与水深、沉积物中的粘土含量 (% )和水含量 (% )均呈负相关 (r,0 .4 84~ 0 .5 0 0 ,P<0 .0 5 )。共鉴定出 18个小型生物类群 ,线虫是数量占优势的类群 ,平均丰度 0 .6 0× 10 6ind· m-2 (± 0 .36× 10 6ind· m-2 ) ,占总丰度的 73.8% ,其他的重要类群依次为底栖桡足类 (18.7% )、多毛类 (3...

20 0 0年 6月在南黄海鱼产卵场 18个站位的调查结果表明 ,小型底栖生物的平均丰度为 0 .81× 10 6ind· m-2 (± 0 .4 1× 10 6ind· m-2 ) ,平均生物量为 1.2 2 g dwt· m-2 ,小型底栖生物的丰度和生物量的水平分布图型大体相似 ,即高的数量值分布在等深线 5 0 m以浅的与海岸线平行的74 94、7994、85 94、11394等站。小型底栖生物数量与 10种环境因子的 Pearson相关分析表明 ,丰度与水深呈负相关 (r,- 0 .5 5 5 ,P<0 .0 5 ) ,与 Chl- a呈正相关 (r,0 .4 86 ,P<0 .0 5 ) ;生物量与水深、沉积物中的粘土含量 (% )和水含量 (% )均呈负相关 (r,0 .4 84~ 0 .5 0 0 ,P<0 .0 5 )。共鉴定出 18个小型生物类群 ,线虫是数量占优势的类群 ,平均丰度 0 .6 0× 10 6ind· m-2 (± 0 .36× 10 6ind· m-2 ) ,占总丰度的 73.8% ,其他的重要类群依次为底栖桡足类 (18.7% )、多毛类 (3.1% )、动吻类 (1.6 % )和介形类 (1.1% )。按生物量 ,优势类群依次为多毛类 (占 2 9% )、桡足类 (2 3% )和线虫 (2 0 % )

 
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