营养级

介绍酸雨引起水体酸化和水体的缓冲能力，阐述不同营养级水生生物和所处不同发育阶段对低pH的敏感性差异。

The sensitivity differences to low pH among some aquatic organisms and different developmental stages are summarized .

渤海桡足类（Copepoda）的食性和营养级研究

A Study on Food and Trophic Levels of Bohai Sea Copepoda

生物体中PBDEs的含量与脂含量和δ15N值均呈正相关，脂含量对生物体富集PBDEs的影响远比生物所处的营养级的影响大。

In organism , positive relationships existed between PBDEs concentration , lipid content and δ 15N value . The influence of lipid content on organism acuminating PBDEs was much greater compared with the influence of trophic level of organism .

渤海无脊椎动物的食性和营养级研究

A Study on Food and Trophic Levels of Bohai Sea Invertebrates

生产者：食物链中第一个营养级。

Producer The first TROPHIC LEVEL , in a food chain .

整个太湖生态系统主要由4个整合营养级构成。

The Taihu lake ecosystem was composed of 4 aggregated trophic levels .

不同营养级的生物脂肪酸组成也存在明显的差异。

There was obvious difference among different trophic biology .

用稳定性同位素技术确定高寒草甸生态系统中动物营养级模型

Model of Trophic Levels of Animals in Alpine Meadow Ecosystem by Using Stable Isotopes

应用氮稳定同位素技术对雷州湾海域主要鱼类营养级的研究

Study on trophic level of main fishes in the Leizhou Bay with stable nitrogen isotope techniques

近几年来植物植食性昆虫天敌间的三重营养级关系研究是一个热点。

Three nutrition relationships between plant and plant-eating insect and natural enemy are focused in some years .

台湾海峡及邻近海域4种头足类的食性和营养级研究

Study on feeding habits and nutrient level of four cephalopod species from Taiwan Strait and its adjacent areas

对害虫区系的形成原因、各区的区系特征及其害虫的营养级特征进行了分析。

Analysis was done on the formation of each fauna , the fauna features and nutrition of the pests .

食物、物链、物网以及由此构成的营养级组成食物系统。

Food , food chains , food-webs and trophic levels consist of a system , termed the food system .

物种自身的价值标志着物种与环境，物种与物种之间的需求和满足关系，要用五个评价指标去衡量，即营养级标准、自然生产力标准、稀有程度、进化程度和自然历史标准。

The value of species itself indicated the relationship of requirements and contents between species and species and environment .

生产者通常被称为第一营养级，被异养称为自养。

Producers are often referred to as being in the first trophic level and are called autotrophs by the heterotrophs .

鳀鱼的环境因素在三角单元上计算，环境包括物理因子和低营养级生物。

Environment factors for anchovy are calculated in triangular cells . Environment includes physical factors and low trophic level organisms .

所以，新生产力表现为真光层对外部输入碳的同化能力和供次级或更高营养级生产所需营养的能力。

So new productivity in euphotic zone is assimilating capacity with carbon imported from outside and supporting capacity to product of high trophic level .

本文主要研究台湾海峡及邻近海域6种对虾的食性特征与营养级。

The feeding habit and nutrient level of six species of shrimps from Taiwan Strait and its adjacent sea areas were studied in this paper .

本文利用胃含物分析和稳定同位素分析相结合的方法，对梅梁湾梅鲚的食物组成、摄食选择性、食性转变以及营养级位置进行了研究。

Stomach content and stable isotope analysis were combined to study the food composition , feeding selectivity , feeding shifts and trophic position of lake anchovy .

高级肉食性动物，营养级为3.5~4.0级。属于该营养级的种类数量最少，只有7种。

Carnivores for high class animals , the nutrient level of which was 3.94.0.The species numbers of this level was the least ( 7 species ) .

用化学动力学观点对生态平衡系统中的食物链、营养级进行动力学方程求解分析。

This paper uses the viewpoint of chemical kinetics to analyze the food chain and nutritive degree in the system of ecological equilibrium by solving the kinetic equation .

在此基础上，探讨了重金属元素经食物链产生的生物累积放大作用对位于食物链最高营养级鸟类生存所构成的潜在威胁，从而为珍稀水禽保护及管理措施的制定提供一些依据。

The influences of bioaccumulation on the aves on the top of food chains were discussed aiming to provide some inferences for the protection and management of endangered waterfowls .

在这个生态系统中，以知识为核心构成的多条人才生态链，组成了错综复杂的人才知识网，各种营养级在此运行着人才流动、知识流动和信息传递等生态系统功能。

In the system , various ecological chains focusing on knowledge form the complicated talent network , where different trophic levels function as talent flow , knowledge flow , and information tranfer .

利用生物天然碳氮稳定同位素可以有效地揭示其有机物来源、消费者的食物组成以及各生物在食物网中所处的营养级。

By using natural carbon and nitrogen stable isotopes , the source of organic matter , food composition of the consumer and the nutrient level of the organisms in the food web can be effectively revealed .

当ΖS1S2cos（Δα）/PCVmax时，不存在捕食关系，前式为同一营养级，后式为相隔一个至几个营养级。

While Ζ S 1S 2 cos (Δα) / PCV max , preying relationship absents , the former Eqs . shows two species in the same trophic level and the latter in more than one trophic level .

目前，许多科学研究已经证实大型浮游动物是河口浮游动物中主要的生物量组成部分，而且也是初级生产者和较高营养级消费者之间非常关键的中间联系。

At present , a lot of previous studies have confirmed that the most biomass of zooplankton was contributed by macrozooplankton . Also many studies have revealed the intermediate linking role of macrozooplankton between primary producers and higher level consumers .

微生物种群组成多样，随着磁感应强度的递增形成不同代谢类型微生物的优势群落，并引发食物链高端营养级微生物种群的波动和优势种群的更迭演替。

With increasing magnetic induction intensity , it formed dominant microorganism population of different metabolic types , triggered fluctuations of microorganism population of high trophic level in the food chain , and led to a succession of alternate dominant species .

建立倒金字塔式多级营养级，使室内生产者、消费者、分解者及物理化学力4个生态结构元趋于合理等，与单一化学药品防治方式相匹配，提高养鳖生物效益。

Establishing inverted " pyramid " style multistage nutrition , which made four ecology structures of producer , consumer , decomposer and physical - chemistry force reasonable , match the way of single chemical prevention and cure to improve the biological benefits .

根据食物网中各营养级的相互关系，初步划分为4个营养级，即初级生产者（海洋植物）、草食性动物和杂食性动物、低级肉食性动物和中级肉食性动物、高级肉食性动物。

Based on the relationship among each nutrient class in food web , they may primarily be divided into four nutrient classes , i.e. , primary producer ( marine plants ), phytophage animals and miscellaneous feeding habit animals , low and middle carnivorous animals , high class carnivorous animals .

建议在今后的研究中，根据简化食物网的概念，对占生物量绝对多数的重要生物资源种类的营养级进行重点研究并采用国际通用的标准划分计算营养级。

It is suggested that according to the simplified version of food web , the future study on the trophic level shall be focused on the important resources species accounting for overwhelming majority of biomass , and the international standard shall be used to divide and calculate the trophic level .