查询词典 trophic level

The distribution of lifetimes of species follows an approximate power law only over a limited regime, and the distribution of trophic level follows an exponential attenuation.

首先，在第一章中介绍了数学生态学和生态模型发展的几个热点，然后介绍了Chowdhury等的统一的宏观和微观的生态模型及它的发展情况。

There may be several more trophic levels of consumers, each using the level below it as an energy source.

可能有几个更多营养级的消费者，每一个都以低营养级的为能量来源。

A photosynthetic green plant or chemosynthetic bacterium, constituting the first trophic level in a food chain; an autotrophic organism.

生产者，自养有机体构成食物链上的第一级营养层次的可进行光合作用的绿色植物或化能合成的细菌；自养有机体

At a certain range, habitat loss and its spatial structure can benefit the control of the epidemic disease, which indicates the possibility of using human disturbance in habitat as a potential epidemic-control method in conservation.(6) Not only the quantity of habitat loss but also the spatial correlations of patch types caused by nonrandom habitat loss affect the invasion and transmission of disease. More fragmented landscape (high amount of habitat loss, low clustering of lost patches) hinders the parasitic infection, which also indicates that whether the spatial heterogeneity benefits or hinders the invasion is dependent on the considered ecological process.(7) Two components of the spatial heterogeneity (the amount and spatial autocorrelation of the lost habitat) form a trade-off in determining the host-parasite dynamics.(8) Within a certain range of habitat loss, host can counterbalance the positive and negative effects, and shows a rising tendency.(9) The epidemic is more likely to break out in the prey-predator system if only a small amount of habitat loss.(10) A highly aggregated distribution of species is a common behavioral strategy when dealing with habitat loss or other environmental stresses.(11) The parasite-host/prey-predator eco-epidemiological systems have the similar mechanism with the intraguild predation systems, and the predator acts as the intraguild predation, the infected prey acts as intraguild prey, and the susceptible prey acts as shared resource.(12) Species at the highest trophic level are no longer affected the most by habitat loss, which depend not only on the biological mechanism but also on the external environmental disturbances.

随着邻体数目的增加，病毒的感染力度变得更大而且在空间上形成聚集的波形；(5)生境破坏及其空间结构在一定范围内有利于疾病的控制，这暗示人为对生境的干扰可作为疾病控制的一个潜在方法；(6)生境破坏的数量以及不同类型生境的空间分布格局都显著地影响了寄生病毒的入侵和传播，生境破碎化程度越高(高丧失斑块的数量或低聚集程度)，将越有害于病毒的入侵和传播，这暗示了空间异质性是否有益于物种的入侵依赖于所考虑的生态过程；(7)由生境破坏引起的空间异质性的两个组分之间存在负偶联关系trade-off(8在适度的生境破坏范围内，宿主种群能够平衡生境破坏带来的正负两种效应并呈现增长趋势；(9)在捕食-食饵系统中，寄生感染病毒极有可能在生境破坏量较低时爆发；(10)物种在面临生境破坏或者其它环境压力时表现出更高的聚集分布策略；(11)寄生-宿主/食饵-捕食生态传染病系统与共位捕食食物网结构具有相似的生物机制，其中捕食者扮演共位捕食者的角色，已感染食饵作为共位食饵，易感染食饵扮作共同消耗的资源；(12)位于最高营养级水平的种群对生境破坏的响应不一定是最敏感的，这不仅依赖于内在的生物机制同时也依赖于外在的环境干扰。

Biomass of M. micrura and C. vicinus increased with increased trophic level of the lake water, while biomass of large-bodied cladocerans (D. galeata and Leptordora kindti) decreased with increased fish predation, and relative abundance of calanoids to cyclopoids tended to decrease with increased fish predation.

微型裸腹溞与近邻剑水蚤的优势度随水体营养水平的上升而上升，而大型枝角类（盔型透明溞与透明薄皮溞）的优势度随水体中鱼类捕食压力的上升而下降，哲水蚤相对于剑水蚤的优势趋向于随鱼类捕食压力的上升而下降。

Pyramid of biomass A type of ecological pyramid based on the total amount of living material at each trophic level in the community, which is normally measured by total dry weight or calorific value per unit area or volume, and shown diagrammatically.

生物量金字塔：指基于群落每个营养水平上有生命的物质总量的一种生态金字塔类型，通常通过总干重或者每单位面积或体积的生热量值来衡量，并用图表表示出来。

There is increasing effect of hundred-pod weight employed only in legumen forming stage and with the level of 30kg/hm2, and the level of 30kg/hm2 also have increasing effect for hundred-seed weight in acicula forming and legumen forming stage. Foundation fertilizer with 30kg/hm2 level increasing the quantity of per plant; employing silicon has no significant effect on fat concentration, so silicon is applicable to edible species. Employing silicon make significant descend of plant nitrogen, significant increasing of plant phosphorus only with level of 90kg/hm2 applying before planting, decreasing of that only with level of 150kg/hm2 employing in legumen forming period, and no distinct effect with others levels. Comprehensive effect of plant potassium, and that should do better in future.

仅在结荚期施用30kg/hm2硅提高花生的百仁重；在下针期和结荚期施用30kg/hm2可提高百果重；基施（30kg/hm2）提高产量的主要原因是增加了单株结荚数；花生施用硅肥后对花生仁的脂肪含量没有明显的影响，花生施硅适宜于食用型品种；花生施用硅肥能明显降低花生成熟期植株的全氮含量；对磷的影响则表现为，基施硅肥90kg/hm2可提高植株中磷的含量，而结荚期追施150kg/hm2的处理降低植株中磷的含量；对钾的影响则表现为复杂的规律，其机理需进一步研究。

Results:The level of total anaerobic population and total aerobic population of excrement specimens of three kinds of IBS sufferers were different significantly, particularly the level of bifidobacterium and cillobacterium(P.01);the level of bacteroid population was higher significantly in diarrhea-predominant and mixed type of IBS sufferers (P.01);the level of enterococcus population was higher significantly in diarrhea-predominant IBS sufferers(P.05);among the aerobes, the number of Escherichia coli and Staphylococcus aureus colonies were increased by different level(P.01or0.05) in the IBS suffers, in particular, the number of Escherichia coli colonies in diarrhea-predominant IBS sufferers increased most significantly.

结果：三种类型的IBS患者粪便中总厌氧菌群和需氧菌群数目与健康人差异明显，特别是双歧杆菌属和乳酸杆菌属明显减少（P.01；拟杆菌菌落数在腹泻型和混合型IBS患者中明显增加（P.01）；肠球菌菌落数在腹泻型IBS患者中明显增加（P.05）；需氧菌中患者组大肠杆菌和金黄色葡萄球菌菌落数均不同程度增加（P.01或0.05），大肠杆菌菌落数在腹泻型IBS患者中增加最明显。

Based on the theory of Sequence Stratigraphy and the systematically analysis of strata which was closely focused on Lithostratigraphy, Biostratigraphy, Paleoecology Event Stratigraphy and Sequence Stratigraphy, four long-term base-level cycles can be recognized in the Mesozoic, each long-term base-level cycles can be further divided into intermediate-term to short-term base-level cycle. Eight intermediate-term base-level cycles are recognized in Mesozoic; Cenozoic can be divided into two structural base-level cycles, and can be further divided into seven long-term baselevel cycles.

应用层序地层学理论，在详细的岩石地层、生物地层、生态地层、事件地层和层序地层为核心的综合地层研究基础上，将中生界划分为四个长期基准面旋回，每个长期基准面旋回内部又可进一步识别出更次一级的旋回，侏罗系内部共可识别出8个次级旋回；根据钻井层序地层与地震地层划分结果，将北缘地区新生界划分为两个构造基准面旋回，其内部又可进一步划分为7个长期基准面旋回。

The company is mainly engaged in development, manufacturing, sales instrumentation, instrumentation control valves, wire and cable, cable tray, and fiber fiber optic cable and other products, after years of product structure adjustment, and has formed instrumentation including thermal resistance, thermocouple, bimetal thermometer, temperature transmitter, pressure gauge, pressure transmitter, level gauge, level transmitter, instrument pipe valves, temperature, pressure, flow, level series fieldbus instrumentation products; wires and cables including power cables, high temperature silicon rubber cables, inverter cables, control cables, computer cables, cross-linked power cable, steel core aluminum twisted line, fire-retardant cables, heating cables, railway signaling cable, fire cable, marine cable, wire compensation, compensation cables, cable tray series wire and cable products; communications center beam tube fiber optic cable, including fiber optic cable, twisted layer type optical cable, ribbon fiber optic cable, ADSS fiber optic cable and wiring products; business for many years was rated "provincial-level contracts and keep promise in advanced enterprise","provincial advanced enterprises to pay taxes according to law","Bank Credit AAA Grade Enterprise","provincial-level high-tech Enterprise "," China Electronics hundred enterprises "," National Association of temperature instrumentation,"" National cable exemption Products "and other honorary titles.

公司主要从事开发、制造、销售仪器仪表、仪表管阀件、电线电缆、电缆桥架、和光纤光缆等产品，经过多年的产品结构调整，已形成仪表包括热电阻、热电偶、双金属温度计、温度变送器、压力表、压力变送器、液位计、液位变送器、仪表管阀件、温度、压力、流量、液位现场总线等系列仪器仪表产品；电线电缆包括电力电缆、高温硅橡胶电缆、变频电缆、控制电缆、计算机电缆、交联电力电缆、钢芯铝绞线、阻燃电缆、伴热电缆、铁路信号电缆、防火电缆、船用电缆、补偿导线、补偿电缆、电缆桥架等系列电线电缆产品；通信光缆包括中心束管光缆、层绞式光缆、带状光缆、ADSS光缆及其配线系列产品；企业连续多年被评为"省级重合同守信用先进企业"、"省级依法纳税先进企业"、"银行资信AAA级企业"、"省级高新技术企业"、"中国电子百强企业"、"全国温度仪表协会理事"、"国家电缆免检产品"等荣誉称号。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。