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平均丰度
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  average abundance
    The average biomass of the macrobenthos in the Changjiang estuary is 17.57g/m2 , and the average abundance is 150ind.
    长江口大型底栖生物平均生物量为17.57g/m2,平均丰度为150ind.
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    In sharp alternation between the two seasons, high variability of environment is observed. Average abundance of meiofauna is 1025.40±168.84ind/10cm~2, average biomass is 1195.87μg dwt/10 cm~2;
    小型底栖动物全年平均丰度为1025.40±168.84ind/10cm~2,平均生物量为1195.87μg dwt/10 cm~2;
短句来源
    average abundance of macrofauna is 1574 ind.
    大型底栖动物年平均丰度为1574 ind.
短句来源
    The average abundance (8.32×10 7cells/m 3) of phytoplankton from Chukchi Sea was higher than that (1.58×10 6cells/m 3) in Bering Sea.
    楚克奇海浮游植物的平均丰度 ( 8.32× 1 0 7个 /m3)远高于白令海( 1 .5 8× 1 0 6个 /m3)。
短句来源
    The biomass of zooplankton in spring was high, species number and the dominant species number (3 species) were relatively less, and also appeared the characters of high dominance and average abundance of single dominant species and average value relatively of diversity index low (1.78).
    春季浮游动物生物量高,种类数及优势种种数(3种)相对较少,并呈现出单一优势种的优势度和平均丰度高,多样性指数均值低(1.78)的特征.
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  mean abundance
    The mean abundance, biomass and production of meiofauna were 0.82xl0~(6) ind·m~(-2), 0.62xl0~(6)g dwt-m~(-2) and 5.56xl0~(6) g dwt·m~(-2)·a~(-1) in the Southern Yellow Sea, respectively.
    南黄海8月小型底栖动物的平均丰度是0.82×10~6ind·m~(-2),生物量为0.62×10~6g dwt·m~(-2),生产量为5.56×10~6g dwt·m~(-2)·a(-1)。
短句来源
    The mean abundance, biomass and production of meiofauna were 1.40x10~(6) ind·m~(-2), 1.05x10~(6)g dwt·m~(-2) and 9.45x10~(6) g dwt·m~(-2)·a~(-1) at B2 station in four cruises in Jiaozhou Bay in 2002, respectively.
    胶州湾B2站小型底栖动物的年平均丰度为1.40×10~6 ind·m~(-2),生物量为1.05×10~6g dwt·m~(-2),生产量为9.45×10~6g dwt·m~(-2)·a~(-1)。
短句来源
    The total mean abundance and biomass were 183.32×10~4ind.
    年平均丰度和生物量分别为183.32×10~4ind.
短句来源
    Total of 191 species were identified. The total mean abundance, biomass were 2183.36 ind.
    本次研究共采到大型底栖动物191种,总平均丰度、生物量分别为2183.36 ind.
短句来源
    Abundance increases lineally with the increases in host body length. The relationship between mean abundance(M)of parasite population and body length(L)of host fish are:M=-1.0760+0.0085L.
    胃瘤线虫的种群平均丰度随宿主体长的增加而缓慢地增加 ,其种群平均丰度 (M)与宿主体长 (L)符合直线方程M =- 1 0 76 0 +0 0 0 85L的变化规律。
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  “平均丰度”译为未确定词的双语例句
    5 At the Nautical School Sampling Station (24 hour monitoring station), the highest average density of microzooplankton was recorded at sunset (154.91 ind./L), successively, at sunrise (146.63 ind./L) and noon (93.09 ind./L), the lowest was at midnight (77.31 ind./L).
    5、在航校昼夜监测站,小型浮游动物的平均丰度以傍晚最高,其次是黎明和正午,午夜时密度最低,分别为154.91个/升、146.63个/升、93.09个/升和77.31个/升。
短句来源
    561.5 ind.
    小型底栖动物平均丰度、生物量和生产量分别为1087.3±561.5ind.
短句来源
    0.30 gdwt.m-2 and 5.5 ? 2.7 gdwt. m-2a-1respectively.
    大型底栖动物平均丰度、生物量和生产量分别为1239±639.6indm~(-2)、6.4±6.5gdwtm~(-2)和9.5±8.6gdwt.m~(-2)a~(-1)。
短句来源
    The average cell abundance of nano- and microphytoplankton from net sample was 811.52 10 4 cells/m 3,of which,the concentration area occurred in adjacent continental waters off Prydz Bay (Stations Ⅳ2,Ⅳ4,Ⅳ5,Ⅳ7,Ⅴ4,Ⅴ5) and northern water area of West Ice Shelf (Stations 1 and 3);
    网采浮游植物平均丰度为 81 2× 1 0 4 个 /m3 ,其密集区则分布在普里兹湾邻近陆架区 ( 2、 4、 5、 7、 4、 5站 )和西冰架北部海域 ( 1、 3站 ) ;
短句来源
    The average cell abundance of nano- and microphytoplankton was 2551×10 4 cells/m 3 in surface waters. The concentration area of nano- and microphytoplankton occurred in Prydz Bay and its adjacent continent station Ⅳ7 and northern water area between West Ice Shelf and Shackleton Ice Shelf(Stations Ⅶ3,Ⅷ1,Ⅷ2,Ⅷ3,Ⅸ1,and Ⅺ1);
    表层水样微小型浮游植物平均丰度为 2 5 5 1× 1 0 4个 /m3 ,其密集区主要分布在普里兹湾内邻近陆架区的 7站和西冰架与沙克尔顿冰架之间的以北海域 ( 3、 4、 2、 3、 1站及 1站 ) ;
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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.
      
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These nano- and microdinoflagellates samples were collected from 28 stations in adjacent waters of the South Shetland Islands, during the Third Antarctic Expedition of China in the summer of 1987 (from January 17 to February 2). Species composition and quantative distribution and characteristics of community structure of planktonic nano- and microdinoflagellates have been analysed and studied in this paper. 47 species which belong to 11 genera of nano- and microdinoflagellates were identified. The dominant nano-...

These nano- and microdinoflagellates samples were collected from 28 stations in adjacent waters of the South Shetland Islands, during the Third Antarctic Expedition of China in the summer of 1987 (from January 17 to February 2). Species composition and quantative distribution and characteristics of community structure of planktonic nano- and microdinoflagellates have been analysed and studied in this paper. 47 species which belong to 11 genera of nano- and microdinoflagellates were identified. The dominant nano- and microdinoflagellates are Gyrodinium lachryma, Protoperidinium archio-vatum, P. antarcticum, Gymnodinium baccatum, G. frigidum, Gymnodinium sp., P. metananum.

根据1987年1月17日~2月2日我国第三次南极考察期间,在南设得兰群岛邻近海域所获28个测站的甲藻样品,分析研究了微小型浮游甲藻的种类组成、数量分布和群落结构特征。经鉴定共有11属47种甲藻,其中以圆甲藻属(Gyrodinium spp.)、裸甲藻属Gymnodinium spp.)和原多甲藻属(Protoperidinium spp.)为主。网样甲藻平均丰度为(6.47×10~3个/m~3;水样甲藻平均丰度达2511.43×10~3个/m~3。微小型浮游甲藻的组成具有鲜明的南极海区的地方特点,大部分种是南极地区特有种,适宜在南极高寒海域大量繁殖;部分种为南极沿岸种或南极—亚南极冷水种;还有一部分为南极寒海域冷水种或分布较广的寒温带种;仅个别为广温广布种;南极海域出现的甲藻类分别代表着南极海域生物地理学和海洋生态学的特点。

Phytoplankton samples were collected from 34 stations in Prydz Bay and its adjacent South Indian Ocean,Antarctica during a period from December 1990 to January 1991.122 taxa belonging to 40 genera 5 phyla were identified,of which,percentage of diatoms was 73%,dinoflagellates was 20.5%,the other species 6.5%.The average cell abundance of nano- and microphytoplankton was 2551×10 4 cells/m 3 in surface waters.The concentration area of nano- and microphytoplankton occurred in Prydz Bay and its adjacent continent...

Phytoplankton samples were collected from 34 stations in Prydz Bay and its adjacent South Indian Ocean,Antarctica during a period from December 1990 to January 1991.122 taxa belonging to 40 genera 5 phyla were identified,of which,percentage of diatoms was 73%,dinoflagellates was 20.5%,the other species 6.5%.The average cell abundance of nano- and microphytoplankton was 2551×10 4 cells/m 3 in surface waters.The concentration area of nano- and microphytoplankton occurred in Prydz Bay and its adjacent continent station Ⅳ7 and northern water area between West Ice Shelf and Shackleton Ice Shelf(Stations Ⅶ3,Ⅷ1,Ⅷ2,Ⅷ3,Ⅸ1,and Ⅺ1); and minimal abundance occurred in west northern water area of Prydz Bay (sector Ⅲ some stations and stations Ⅳ 1-5).The average cell abundance of nano- and microphytoplankton from net sample was 811.52 10 4 cells/m 3,of which,the concentration area occurred in adjacent continental waters off Prydz Bay (Stations Ⅳ2,Ⅳ4,Ⅳ5,Ⅳ7,Ⅴ4,Ⅴ5) and northern water area of West Ice Shelf (Stations 1 and 3); low abundance occurred in eastern water area of Shackleton Ice Shelf (at each station in sector Ⅹ and Ⅺ).Nano- and microphytoplankton maximum was usually found at the surface and above 50m depth,and gradually decreased with the water depth from 100m to 200m.the relationship of cell abundance of nano- and microphytoplankton with Euphausia superba density and N.P.Si.contnets was negative significance.

1990年 1 2月~ 1 991年 1月从南极普里兹湾及其毗邻南印度洋获得的微小型浮游植物样品 ,经鉴定、分析表明 :调查海区有 5门 40属 1 2 2种、变种和变型 ,其中硅藻类占 73 .0 %,甲藻类占2 0 .5 %,其它仅占 6 .5 %。表层水样微小型浮游植物平均丰度为 2 5 5 1× 1 0 4个 /m3 ,其密集区主要分布在普里兹湾内邻近陆架区的 7站和西冰架与沙克尔顿冰架之间的以北海域 ( 3、 4、 2、 3、 1站及 1站 ) ;位于普里兹湾西北部海域断面 和 1~ 5站丰度最低。网采浮游植物平均丰度为 81 2× 1 0 4 个 /m3 ,其密集区则分布在普里兹湾邻近陆架区 ( 2、 4、 5、 7、 4、 5站 )和西冰架北部海域 ( 1、 3站 ) ;低丰度位于沙克尔顿冰架东部海域 (断面 、 的测站 )。微小型浮游植物垂直分布密集区位于测区中部 ( 3、 3站 )和东部 ( 3站 ) 0~ 5 0 m水体 ,水深1 0 0 m以下至 2 0 0 m随深度的增加而丰度逐渐减少。微小型浮游植物丰度与大磷虾的丰度和营养盐 (N、P、Si)浓度成显...

1990年 1 2月~ 1 991年 1月从南极普里兹湾及其毗邻南印度洋获得的微小型浮游植物样品 ,经鉴定、分析表明 :调查海区有 5门 40属 1 2 2种、变种和变型 ,其中硅藻类占 73 .0 %,甲藻类占2 0 .5 %,其它仅占 6 .5 %。表层水样微小型浮游植物平均丰度为 2 5 5 1× 1 0 4个 /m3 ,其密集区主要分布在普里兹湾内邻近陆架区的 7站和西冰架与沙克尔顿冰架之间的以北海域 ( 3、 4、 2、 3、 1站及 1站 ) ;位于普里兹湾西北部海域断面 和 1~ 5站丰度最低。网采浮游植物平均丰度为 81 2× 1 0 4 个 /m3 ,其密集区则分布在普里兹湾邻近陆架区 ( 2、 4、 5、 7、 4、 5站 )和西冰架北部海域 ( 1、 3站 ) ;低丰度位于沙克尔顿冰架东部海域 (断面 、 的测站 )。微小型浮游植物垂直分布密集区位于测区中部 ( 3、 3站 )和东部 ( 3站 ) 0~ 5 0 m水体 ,水深1 0 0 m以下至 2 0 0 m随深度的增加而丰度逐渐减少。微小型浮游植物丰度与大磷虾的丰度和营养盐 (N、P、Si)浓度成显著的负相关。

Fish productivity characteristics of 36 representative large- andmiddle-sized reservoirs in Shandong Province were investigated in 1989 and 1990.17 items concerning characters of the drainage areas, morphological, hydrolo-gical, hydrochemical and biological features, and the status of reservoir fisherywere completely included in the investigation. On the basis of these results, fishproductivity of the reservoirs was assessed with systematic cluster analysis,ranking method and regression analysis. In assessing...

Fish productivity characteristics of 36 representative large- andmiddle-sized reservoirs in Shandong Province were investigated in 1989 and 1990.17 items concerning characters of the drainage areas, morphological, hydrolo-gical, hydrochemical and biological features, and the status of reservoir fisherywere completely included in the investigation. On the basis of these results, fishproductivity of the reservoirs was assessed with systematic cluster analysis,ranking method and regression analysis. In assessing with the ranking method a systematic approach was followed toclassify the reservoirs into five ranks, and on the basis of the average fish produc-tion of 2 well--managed typical reservoirs over a number of successive years andin accordance with the average plankton abundance of the reservoirs in each rankthe fish productivity of each rank was estimated to be 440, 370, 290, 220 and150 kg.ha~(-1) respectively. From the results of regression analysis it was shownthat the major factors affecting the levels of reservoir fish produotivity were:the soil fertility, the density of population and the rate of vegetation cover withinthe drainage area; and the total phosphorus, the total nitrogen, the electric conduc-tivity, the chemical oxygen demand and the plankton abundance of the reservoirwater. Among all of them soil fertility was the strongest one.

1989、1990 两年调查了山东全省有代表性的36座大中型水库的鱼产力性状。根据调查结果用系统聚类法,等级法和回归分析法进行了鱼产力评估。用等级法将这些水库根据鱼产力的高低分成了五级,并以二座经营较好、放养充分的典型水库的多年连续平均鱼产量为基准,根据浮游生物的平均丰度,估计了各级水库的鱼产力依次为 440、370、290、220 和150kg·ha~(-1)。回归分析法的评价结果表明影响这些水库鱼产力相对高低的主要因素是集雨区的土壤肥力、人口密度和植被覆盖率;以及库水的总磷、总氮、电导率、化学耗氧量和浮游生物的丰度,其中又以土壤肥力影响力最强。

 
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