查询词典 periphyton

In order to reveal the effects of tilapia on phytoplankton and periphyton, an experiment with two treatments, one with tilapia and one without tilapia (non-fish group) was carried out, and the biomass of both phytoplankton and periphyton was analyzed.

为了解罗非鱼对浮游植物和附着藻类的影响，实验在室外模拟条件下，分别设置罗非鱼组和无鱼对照组的两组处理，分析了罗非鱼对附着藻类及浮游植物生物量等的影响。

The results showed that removal effect of periphyton on nitrogen was significant.Cumulative removal ratio of nitrogen was up to 60%,the nitrogen concentration decreased from 5 to 2 mg /L or so within two weeks.Cumulative removal ratio of nitrogen was closely related with nitrogen concentration,working time and biomass of periphyton.

结果表明，附着生物对水体中的氮有显著的去除效果，半个月内，附着生物对水体中总氮的累积去除率可达60%，在有附着生物的水体中总氮浓度从5 mg/L左右下降到2 mg/L左右；附着生物对水柱中氮的累积去除率和水柱中氮的浓度、附着生物的生物量以及附着生物作用时间密切相关。

4Both filamentous periphyton and unicellular periphyton showed significant effects on TSS and Chla removal and increase of DO concentration.

4无论是丝状周丛藻类还是颗粒态周丛藻类，均表现出对TSS、Chla的去除效果和对DO浓度的提高。

It suggests that periphyton might be nitrogen limited in the lagoon.O2 evolution is obviously a better method to determine in situ primary productivity of periphyton. It is safer and cheaper than 14C method.

综合看来，溶氧法是较好的方法，因其可短时间内野外於直接测得附生藻类的生产力的变化，又有低危险性与低成本的优点。

This paper has studied the removal of nitrogen and phosphorus in polluted urban waters by filamentous periphyton and unicellular periphyton through designing a simple wastewater treatment system,under the near-natural conditions.

本文通过设置简易的水质处理系统，在近自然条件下，分别研究了丝状周丛藻类和颗粒态周丛藻类对上海市劣Ⅴ类黑臭水体氮、磷的去除效果。

In the first cultivation stage,as relatively high concentration of phosphorus,phosphorus from water column was removed to a certain extent by periphyton.The end of the incubation,as low concentration of phosphorus periphyton releases phosphorus to water column instead of removal phosphorus from water,this may closely relate to the alkaline phosphatase secreted by periphyton in water body.

从培养过程中水体磷的浓度变化来说，培养初期，水体中磷的浓度比较高，附着生物对其有一定的去除作用；培养后期，水柱中磷的浓度比较低，附着生物不但不去除水中的磷，而且还向水柱中释放磷，这可能与附着生物向水体分泌碱性磷酸酶密切相关。

Nested ANOVA test showed the variance of GCPP mainly occurred among sites rather than within periphyton. Diatoms increased with the GCPP. There is a significant positive relation between the dissolved inorganic nitrogen in the water column and GCPP of periphyton.

GCPP的时空变化与底栖微藻在附生藻类生物量中所占比例和水体中的无机氮浓度有非常显著的正相关性，初步推测大鹏湾的GCPP可能是受到水体中氮的限制而有GCPP之时空变化。

Periphyton community structure is studied in this paper by means of taking glass-medium as artificial substance to attract periphyton that is fixed in the Maocun epikarst spring water and in sand-shale fissure spring water.

用载玻片作人工基质，放置在桂林毛村岩溶生态试验场碳酸盐岩分布区表层岩溶泉水和砂页岩区裂隙泉水中，开展着生微型生物群落结构研究。

Periphyton samples were vacuum-filtered through Whatman GF/C membranes.

Periphyton样品进行了真空过滤瓦特曼石墨/碳薄膜。

Effect of periphyton on the growth of Elodea nuttalii;2.5:1 and 50:1,respectively,while the growth of periphyton ,especially of epiphytic algae,was the worst,giving the least adverse effects on V.

5：1和50：1时的54%和31%；当TN/TP为25：1时，附着生物尤其是附着藻类的生长状态最差，对苦草生长的不利影响最小；可见，富营养水体中适宜于苦草生长的TN/TP为25：1；TN/TP为25：1这一比例的应用具有相对性，当水体营养浓度低于限制水平时，该比例适用，如果水体中营养盐浓度超过限制水平时，该比例则不适用。

I am sure after a few weeks of adaptation and familiarization I will have no difficulty in functioning on a daily basis in an English speaking society or in participating fully in graduate studies.

在大学的三年的学习生活不仅给予我自身的充实，更重要的是磨练和培养了我较强的自觉能力和严谨，踏实的作风以及不怕困难的精神，对未来充满了信心！

As the first volcanoes erupted, one of the gases that bellowed out was steam.

在第一批火山喷发时，喷出的气体之一就是水蒸汽。