方法：采用夜夹法对野外和室内进行小兽密度和种群调查；
Methods:The night rat clip method was applied to investigate densities and species of field and in door rodent.
克雷布斯调查了加拿大育空地区含有野兔种群的试验田。
Krebs investigated experimental plots in Canada's Yukon territory that contained hare populations.
通过科瑞·福特斯和他的同事的调查得出，厄瓜多尔的蝴蝶种群与哥斯达黎加的蝴蝶种群一样，都具有白色与黄色种群的变异，但是并未达到一种显著的生殖隔离的水平。
The Ecuadorian population examined by Kronforst and his colleagues shows the same white and yellow variation found in Costa Rica but has not yet reached a level of strong reproductive isolation.
长期的人为干扰，导致其种群数量急剧减少，目前调查地区仅存不到600株。
Due to human destruction its population is decreasing rapidly with less than 600 plants in the investigation area.
目的调查珠海口岸地区鼠体表寄生虫蚤、革螨、恙螨、蜱、吸虱的种群组成。
Objective To investigate species composition of gamasid mites, chigger mites and flea on the rodent in Zhuhai Port.
在进行种群数量调查的同时，还对越冬灰鹤种群的年龄结构进行了探讨。
At the same time of population census, the age structure of wintering common cranes had also been examined.
对重庆市郊区1998年至1999年春玉米上蚜虫种群的发生情况进行了系统调查。
A systematic investigation was made of the aphid populations and their bio-distribution on spring-sown maize plants in 1998~1999 in the suburbs of Chongqing.
本文在区域样地调查基础上，通过解析木分析，比较了不同经营措施对落叶松种群生物量和生长量的影响。
This article compares the effects of different management measures on biomass and growth of larch by analyzing the parse tree based on researching the sample.
调查影响疟疾流行的人群及地理分布特征，暴发点分布、流行程度等社会、经济和自然因素，以及媒介按蚊的种群和密度。
Influence factors of malaria epidemic were investigated, including population features, geographical distribution, epidemic focus and intensity, and the species of Anopheles.
这项调查意在尝试调查种群间更复杂的协同进化关系——那种两种动物进化出互惠互利的举动。
The research aims to try and investigate more complex co-evolution between species, where two different animals evolve complimentary behaviours.
棉田捕食性天敌组成及种群动态经过系统调查，初步得出该垦区捕食性天敌隶属于7目15科28种。
The population dynamic and composition of predatory enemiesThe results indicated 28 species of predators belonging to 7 orders, 15 families, were found in coton fields.
通过对茭白二化螟的越冬习性、产卵习性、钻蛀及转移规律，田间种群动态、天敌种类进行了调查和研究。
This paper dealt with the overwintering, oviposition, boring and transferring behavior, population dynamics, and control of striped stem borer (SSB), Chilo suppressalis in Zizania fields.
目的调查大理州洱源县小兽类哺乳动物种群结构。
Objective To study the population structure of small mammals in Eryuan Dali.
目的调查长乐国际机场登革热媒介种群密度，预防和控制登革热暴发流行。
Objective By investigating population density and breeding characters of Dengue vectors in Fuzhou Changle International Airport to prevent and control Dengue fever.
采用黑光灯引诱逐日调查的方法，研究了太行山低山丘陵区鳞翅目趋光性昆虫种群数量动态变化规律。
By the black light lamp lure and investigation day after day, the population dynamics of Lepidoptera phototactic insects in hill area of lower Taihang Mountain is studied.
目的调查吉林洮南草原蚊虫种群，开展现场蚊虫防治试验研究。
Objective To investigate mosquito species and develop control test at Taonan grasslands in Jilin province.
目的用分子技术调查中国间日疟原虫种群结构与地理分布。
Objective To investigate the population constitution and geographical distribution of Plasmodium vivax in China using molecular technique.
根据直播稻区稻水象甲种群动态和分布特点，提出了相应的虫情调查和测报防治建议。
Some Suggestions for the pest forecast and control were also brought forward based on the characteristics of the pest population dynamics and distribution in the direct seeded rice field.
本文系统研究了陕西关中地区苜蓿蓟马的种类，调查了杨凌、渭南、宝鸡等地区苜蓿上的蓟马种群。
The paper studied and investigated the species of the thrips in alfalfa in the mid of Shaanxi province.
方法自1959年以来连续在三峡库区宜昌段用夹夜法调查鼠类种群及密度。
Methods Sequential investigation into the density and population of rodents in the Yichang section of the Three Gorges area had been implemented with the trap-night method since 1959.
本研究对蠡湖鲢鳙鱼的种群结构及其生长特性进行了调查，旨在为保护和科学利用其渔业资源提供依据。
This study was mainly about the growth characteristics and community structure which will provide evidence for protection and utilization of fishery resources in Lihu lake.
在田间种群研究阶段，主要进行种群聚集与扩散迁移的研究和自然种群的数量调查。
In the stage of field population study, most study focus on the congregation and immigration of insect population, the investigation of natural population quantity.
通过单位面积取样调查，定量地分析了开花期星星草无性系种群的数量特征及其与无性系大小之间的关系。
The relationship between quantity characteristic and the size of clone of Puccinellia Tenuiflora clone population at flowering stage sampled by unit area.
样线法是野生动物种群数量调查的常用方法之一。
The line transect methods are widely used in wildlife population census.
方法采用夹夜法调查鼠类种群数量，采用统计学方法对群落构成进行分析。
Methods Trap-at-night method was used to estimate the size of rodent community, and its structure was analyzed with statistical method.
通过在洋白蜡和水曲柳等受害林地进行解剖调查，发现白蜡窄吉丁自然种群中幼虫的自然感病死亡率为6.3％，均为真菌感染，没有发现病原细菌和病毒感染致死的情况。
The results showed that there is 6.3% dead larvae caused by infection of pathogenic fungi in EAB nature population, no finding that of pathogenic bacteria or virus.
调查结果基本反映了本口岸地区蝇类构成，弥补了济宁口岸蝇类种群资料的空白。
The results generally reacted Jinxing ports flies constitute, making up for Jining port empty flies data.
由于长期缺乏有效的科学调查，目前对其分布、种群及动态、行为、猎物现状等基础信息不清。
The basic ecological data of the leopard, such as the distribution, population and it's dynamic, behavior, prey, is least known for lacking of a long-term study.
由于长期缺乏有效的科学调查，目前对其分布、种群及动态、行为、猎物现状等基础信息不清。
The basic ecological data of the leopard, such as the distribution, population and it's dynamic, behavior, prey, is least known for lacking of a long-term study.
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