community

The effects of environmental factors on the fluctuations of Sinopotamon chekiangense Tai et Song's population;

环境因子对双清溪浙江华溪蟹(Sinopotamon chekiangense Tai et Song)种群变动的影响

Spatial and temporal distribution of water hyacinth population in Shanghai and its control methods.;

上海市凤眼莲种群的时空分布及控制对策

Effects of methamidophos and acetochlor on population and activity of methanogens.;

甲胺磷和乙草胺对产甲烷菌种群数量及其活性的影响

Mosquito species and their seasonal growth and decay at Zhenjiang port;

镇江口岸蚊类种群及季节消长调查研究

Survey on Fly Species and Density in Xiaogan Urban Area;

孝感城区蝇类种群及密度调查

An Investigation on Fly Density and Species in Nanchang Frontier Area;

南昌口岸蝇密度及种群调查

Study on Distribution Pattern of Amanita Populations;

鹅膏属种群分布格局研究

Quantitative Characters of Vegetative Multiplication of Bothriochloa ischaemum Populations;

白羊草种群繁殖的数量特征

Analysis on the Genetic Divergence of Five Populations of Locusta migratoria by using RAPD;

飞蝗五个自然种群的遗传分化研究

Operation of acidogenesis and homoacetogenesis coupling system and its microbial community analysis;

产乙酸耦合系统产酸及其微生物种群动态分析

Studied on the distribution pattern of Populus euphratica Oliv & Populus Pruinosa Schrenk community,discussed on the location of the community changes of Populus euphratica Oliv & Populus Pruinosa Schrenk,and deduced their spreading mechanism and the populus evolution.

研究了胡杨和灰叶胡杨种群的地理分布,阐述了胡杨和灰叶胡杨种群的地理位置变化,探究了它们的扩布机制和种群的进化关系。

Approximate solution to a coupling model,of ecological system for the habitat and annihilation of species groups;

栖息地与种群灭绝的生态系统耦合模型的近似解

but for a long time,with poor breeding technique and management,quality of thespecies group of the Animal is declined and it s quantity reduced rapidly.

为了有效保护和利用这一珍贵资源,针对饲养技术落后、管理粗放而导致中国驯鹿种群品质下降、数量减少等方面的问题,采取相应对策。

In this paper,a class of species group ecotogical environmental problem is con- sidered.

研究了一类种群生态环境问题。

demersal stocks

底(层)鱼(类)(种群)

Study of Particle Swarm Optimizers Based on Population Entropy and Structure;

基于种群熵和种群结构的粒子群算法研究

Conference on Straddling Fish Stocks and Migratory Fish Stocks

跨界鱼类种群和洄游鱼类种群会议

Of or relating to the Caucasian racial division.No longer in scientific use.

高加索种群的高加索种群的或有关高加索种群的。科学界已不使用

The population density is evened out.

种群密度亦趋于均匀化。

It influences dispersion of the population.

它影响种群的扩散。

a seed stock of salmon in the river.

河里的大马哈鱼留种群

The ant is a social insect.

蚂蚁是一种群居昆虫。

A group of individuals can be called a population.

个体的集合称为种群。

Conference on Straddling Fish Stocks and Highly Migratory Fish Stocks

跨界鱼类种群和高度洄游鱼类种群会议

United Nations Conference on Straddling Fish Stocks and Highly Migratory Fish Stocks

联合国跨界鱼类种群和高度洄游鱼类种群会议

A low population is not sufficient to halt a decline.

低的种群密度不足以立即阻止种群下降。

These species are also the ones where rape is most often observed.

而这样的种群又是强奸行为随处可见的种群。

Virulence Comparison of Brown Planthopper Populations from Paddy Field and Overwintered in Greenhouse

褐飞虱越冬种群和田间种群的致害性比较

Simulation Study on Effects of Immigration Population on Population Dynamics of Brown Planthopper

迁入种群对褐飞虱种群动态影响的模拟研究

Species Diversity and Arbor Population Distribution Pattern of Fagus longipetiolata Community in Leigong Mountain

水青冈群落物种多样性及乔木种群分布格局

Study on Population Dynamic and Community Dominance Species Niche of Quercus Liaotungensis;

辽东栎种群动态及其群落优势种生态位研究

Studies on the Population Ecology and Module Characteristics of Osmanthus Fragrans as the Constructive Species in Secondary Community;

次生林建群种桂花种群及其构件数量特征研究