The species composition of ticks varied with different months.
不同月份的蜱种组成有所不同。
As a result, the species composition of crow flocks wintering in Shenyang City is c.
发现冬季集群于沈阳市郊的乌鸦主要由小嘴乌鸦C。
The species composition, variation in biomass and their succession were investigated.
分析了水库水生生物种类组成、数量变化和群落演替。
The species composition and characteristics of mangrove flora in the world were reviewed and discussed.
探讨了世界红树林植物区系的种类组成及其特点。
The species composition in the insect community and the relative abundance of each group were studied in the peach orchards.
研究摸清了桃园昆虫群落的物种组成、各类群的相对多度。
The results also revealed that the species composition of fungi differed greatly between the interior and surface of leaves.
真菌分离结果表明在茶树叶片表面和内部组织中生长有显著不同的真菌群落。
After 20 century 70s, fish species composition significant changed on the basis of the species composition of fish-scale-deposition.
通过鱼鳞种类组成比例的改变，发现上世纪70年代后，鱼类资源结构发生了显著的变化。
The species composition, structure, physiognomy and succession of mangrove community near Aotou port, Daya are disscussed in this paper.
本文报道了大亚湾澳头港附近的红树植物群落的种类组成、结构、外貌及演替。
This experiment was conducted to understand the species composition, diameter distribution, types and decay classes of coarse woody debris(CWD) on the 9.
为对象，分析了粗木质残体（CWD）的物种组成、径级分布、存在形式、腐烂等级。
Objective To know the species composition of mosquito and their density in a battalion of a military base in Zhejiang province for mosquito control effectively.
目的了解驻浙某部营区蚊虫种群构成、密度情况，为有效控制蚊虫提供科学依据。
Conclusion the species composition of mosquito and their density in Zhejiang province were attained. This study provided scientific evidence for mosquito control.
结论初步摸清了某部驻浙营区及其周边环境蚊虫种类构成与密度情况，为今后开展有效的蚊虫防制提供了参考。
The vegetation in Shenzhou peninsula of Wanning was studied with the method of line and sampling research, and the species composition and vegetation types were analyzed.
以海南省万宁市神州半岛区域现有植被作为调查对象，采用路线调查和样方调查相结合的野外植被调查方法，研究该地区植被类型的情况。
Weed survey was conducted by sampling methods of inverted W-pattern to determine the species composition and structure of weed communities in maize fields in Hebei Province.
采用倒置“W”取样法对河北省玉米田杂草进行了调查，以明确田间杂草的种类组成及群落结构。
Methods The night trapping method was used to systemically monitor the species composition and seasonal density fluctuation of rodents at Daxie port from Jan. 2006 to Dec. 2010.
方法从2006—2010年，采用夹夜法对大榭口岸的鼠类种群的构成、密度、季节消长情况进行了调查。
Logging planner can justify the case by comparing the produced timber volume and potentially impacted adjacent trees; and the species composition of the impacted adjacent trees.
伐木计划者可以通过比较木材生产量、对潜在受影响的邻近树木、受影响邻近树木的物种构成来调整案例。
The species composition, resources status and distribution characters of mangroves in China were investigated and evaluated by field survey and data analysis together with literature.
本文根据福建海区历次海蜇的调查资料 ，就本海区的海蜇和霞水母的渔业资源状况、群体结构、生长特性等渔业生物学进行了分析研究。
Therefore, it should be emphasized to enhance the self - fertilization capability of forest by adjusting the species composition and increasing the proportion of native broad - leaved species.
因此，应重视通过调整物种组成，增加阔叶树种比例以增强森林的自肥能力。
The result shown that there is a significant difference in the species composition and community structure in different wetlands. The important value of wetland plants reveals a seasonal variation.
结果表明北京市主要湿地的物种组成和群落结构存在很大的差异，湿地内主要物种的重要值有季节性的变化。
According to the data selected from bottom trawl fishery resource monitoring in the East China sea from 1997 to 2000, the species composition and seasonal variation of small-sized fish were analysed.
根据1997 ~ 2000年东海区底拖网渔业资源调查资料，分析和讨论了东海区小型鱼类的种类组成和季节变化。
The emphasis of this new "community ecology" was on the composition and structure of communities consisting of different species.
这种新的“群落生态学”强调的是由不同物种组成的群落的组成和结构。
To what extent competition determines the composition of a community and the density of particular species has been the source of considerable controversy.
竞争对于一个群落的组成和特定物种的密度的决定程度有多大，一直是相当有争议的问题。
Experiments suggest that if fire did not occur in savannas in the Americas, species composition would change significantly.
实验表明，如果美洲稀树大草原没有发生火灾，物种组成将发生显著变化。
Shifts in forest species composition ramify through the ecosystem in many ways because tree species have different, often unique properties.
由于树种具有不同的、往往是独特的特性，森林物种组成的变化以多种方式影响着生态系统。
Long-term effects are primarily mediated by changes in tree species composition and the consequent alterations of forest structure, productivity, and nutrient uptake.
长期影响主要是由树种组成的变化以及随之而来的森林结构、生产力和养分吸收的变化所导致的。
These shifts in species composition may be benign, or they may result in a cascade of negative consequences throughout the Marine food web.
这些物种组成的转变可能是良性的，也有可能导致整个海洋食物网的一系列消极后果。
The distribution of benthic biomass and biodensity, composition of species and community structure are studied in coastal waters of the Bohai and Yellow Seas.
对渤、黄海近岸海域底栖生物的种类组成、生物量及栖息密度的分布和群落结构进行了叙述和讨论。
The composition of species of chigger mites varies with different habitats, mice and months.
不同生境、鼠种和月份的恙螨种类组成有所不同。
The composition of species of gamasid mites varies with different mice, habitats and months.
不同鼠体、生境和月份革螨种类组成有所不同。
The indicators of ecosystem integrity can be grouped into indicator species, structure-function-composition indicators, and stress-response indicators.
并从指示物种，结构-功能-组成，压力-响应等方面介绍了生态系统完整性评价指标；
In addition, the composition of species, Numbers and the index of community structures were changed with latitude and spring tide.
此外，种类组成、生物量和群落结构指数都随纬度和潮汛的不同而变化。
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