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现存量的英文

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"现存量"怎么读用"现存量"造句

英文翻译手机手机版

  • standing crops
  • stock on hand

例句与用法

  • The results showed that microzoop1ankton could controi the quantity of phytoplankton in xiamen west harbor , preventing the formation of algae bloom
    57 ,摄食浮游植物现存量的22 45 ,对浮游植物有一定的控制作用。
  • Standing crop the total weight of all the living organisms present in an ecosystem at a given moment , usually expressed as dry weight per unit area
    现存量:某一给定时刻,生态系统中所有活的有机体的总重量。通常的表述是单位区域的干重。
  • Taxonomic groups of zoobenthos were significantly correlated with biomass of submersed aquatic macrophytes , depths , secchi disk transparencies , total phosphorus and total nitrogen contents
    底栖动物各个类群的现存量与水草生物量、水深、透明度、总磷和总氮的关系均较密切。
  • For the relationships between zoobenthos and environmental factors , results showed that zoobenthic standing crops were positively correlated with submersed aquatic macrophytes , total phosphorus and total nitrogen contents but were negatively correlated with depths and secchi disk transparencies
    环境分析表明底栖动物总的现存量与水草生物量、总磷总氮含量均正相关,与水深、透明度均负相关。
  • But the gut evacuation rates did not vary with the experimental temperature and body size . copepods usually performed feeding rhythms with maximum level at midnight and their feeding activities changed with the tide rhythms at the estuary area . in the laizhou bay , the daily grazing rate of the copepod population on phytoplankton was 20 . 81 ? 98 . 35 % of the primary production and 2 . 53 ? 6 . 36 % of the phytoplankton standing stock in summer
    现场测得的桡足类摄食率结果表明,在莱州湾,夏季桡足类群体的日摄食量占初级生产力的20 . 81 ? 98 . 35 % ,占浮游植物现存量的2 . 53 ? 6 . 36 % ,潍河口,河口外浮游动物优势种群体的日摄食量占初级生产力的32 . 28 % ,占浮游植物现存量的14 . 12 % ,河口内对初级生产力的摄食压力< 3 % ,日摄食量小于浮游植物现存量的1 % 。
  • The effects of food concentration and diurnal photo period on the filtering and grazing rates a . pacific were discussed . the main results are showed as follows : 1 . in the prawn cultivated pond , the year - round phytoplankton apparent growth rate ranged between 0 . 181 ~ 1 . 2888 d - 1
    主要分析了微型浮游动物对浮游植物现存量和初级生产力的摄食压力,微型浮游动物的氨氮排泄率及其对初级生产力的贡献,探讨了实验室条件下食物浓度和光周期对太平洋纺锤水蚤( acartiapacifica )滤食率和清滤率的影响。
  • To examine the effects of different lake uses on lacustrine zoobenthic community , zoobenthos were sampled in 1998 - 1999 from four shallow lakes of middle and lower basins of changjiang river , viz . fish stocking and touring lake , east tangsun lake ; fish - stocking - lake , niushan lake ; natural - fishing - lake , longgan lake and crab - overstocking - lake , huang lake . species composition , standing crops , functional feeding groups of benthic animals in every lake were studied
    1998年4月1999年7月对长江中下游四个浅水湖泊即东汤孙湖、牛山湖、龙感湖和黄湖的底栖动物分别进行了四次采集,研究各个湖泊底栖动物在种类组成、现存量、功能摄食类群、生产显和渔产潜力上的差异;结合各个湖泊理化生物因子综合分析了湖泊不同利用方式对底栖动物群落的影响。
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