查询词典 biotic

Populations may be expanding or contracting because of changes in environmental conditions or because of changes to their biotic environment.

由于周围环境的变化或生物因子的影响，种群可能会增长或收缩。

Several groups of cis-acting elements are among the best characterized in the context of abiotic and biotic defense mechanisms.

参与环境胁迫的基因启动子部分的顺式作用元件得到广泛的研究，很多种类的顺式作用元件参与环境胁迫因子的应答。

College of Life Sciences, Anhui Normal University; Provincial Key Laboratory of Biotic Environment and Ecological Safety

安徽师范大学生命科学学院，安徽省高校生物环境与生态安全省级重点实验室

As a kind of biotic community, the enterprise cluster possesses some behavioral traits of the animal community.

作为一种群落组织，企业集群有着动物社群生活的行为特征。

The uptake of dissolved metals, a potentially significant source for overall metal accumulation in bivalves , is liable to be influenced by biotic and abiotic factors.

对溶解态重金属的吸收是贝类累积重金属的重要来源之一，易受到生物因素和非生物因素的影响。

Water bodies and biotic communities are interdependent and interacted with each other, which produces self-purification capa...

水体与生物群落相互依存，相互作用，形成了江河湖泊的自净能力。

The results showed that the main factors affecting the distribution of inorganic nitrogen were coastwise fresh-water runoff and biotic activities, and the former was more important. The analysis by N/P ratio showed that N was a limited factor on the primary productivity in autumn and winter, but P was in spring and summer.

结果表明，影响北海湾无机氮含量分布的主要因素是沿岸冲淡水，其次是生物活动；通过N/P值分析，表明了N为该湾秋冬季节初级生产力的限制因子，而P则为该湾春夏季节初级生产力的限制因子。

As the most ordinary biotic index in paleoceanography researches, foraminifera represent anexcellent environmental indicator in this paper.

3有孔虫作为古海洋研究中最常用的生物指标，在本文研究中显示了良好的环境指示性。

The purpose of this paper was to introduce the conceptual use of the index of biotic integrity to the Chinese ecologists, promoting the IBI system suitable for the Chinese inland waters, with particular emphasis on evaluation of shallow lakes in the middle reach of the Yangtze River.

介绍了采用 Karr提出、经 Fausch等修订后的生物完整性指数进行水环境质量评价的原理和概念，并根据长江中游鱼类种类组成特征、可获得数据的类型和资料的性质，初步建立了适合长江中游浅水湖泊的 IBI体系。

Four items of water quality has been collected in field surveys, including PH value, dissolve oxygen, electric conductivity level and turbidity level. Furthermore, 19 species of freshwater fish have been found, of which 10 species are local strains, 4 species are foreign strains, and 1 species is a hybrid strain. The results of calculating and analyzing the water quality index and Index of Biotic Integrity indicate that WQI is estimated from excellent to fair, while IBI is estimated from fair to poor. It has been illustrated that two indexes show different assessment results. Of those WQI index is more reliable than the IBI. IBI index need further modification for the use of water quality assessment in the Tou-Bien-Ken Creek.

现场采集水质资料共4种，包含pH、溶氧、导电度及浊度，鱼类共计19种，其中原生种10种、外来种4种、杂交种1种，经计算之水质指数及生物整合指数研究分析结果发现，调查测站WQI水质评等由特优至中等，IBI评等由中等至差的等级，显示两种指数评分具有差距，WQI指数之评分结果较IBI正确，IBI指数须经修正才能更适用於头汴坑溪之水质评估。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。