species composition

Species composition and community structure of terrestrial algae in the biological crusts of Lanzhou Northern Hill

兰州北山生物结皮中陆生藻种类组成与群落结构

We conclude that there is a strong correlation between the benthic fauna and environmental factors, and also for the benthic species composition, density and environmental factors.

从而得出底栖动物与主要环境因子相关系数都很高，底栖动物物种组成、密度与主要环境因子间的相关性都很强。

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 tide had no obviously influence on benthic community, however, mangrove had some influence on species composition and abundance of zoobenthos living in this area.

潮汐对底栖动物群落影响并不明显，红树林环境对林底的底栖动物种类组成和丰度有一定的影响；

The results showed that ( 1) the species composition and their frequency were significantly impacted by tourism. Some native shade-tolerant or hygrophilous plants had disappeared, while some xerophilous, disturbance-resistant species, as well as some exotic and synanthropic species, had expanded their populations.

结果表明：（1）旅游干扰显著改变了林下植物物种组成：耐荫喜湿的乡土植物局部消失，而喜旱耐扰动的植物种群扩大，外来和伴人植物种群侵入。

The changes in land utilization and deforestation of primary rain forests may bring regional climatic changes especially temporal pattern of rainfall, which may in turn change the reproductive phenology of tropical plants even the distribution and species composition of the tropical forests.

土地利用方式的改变和原始热带雨林面积的减少，可能会带来区域气候特别是降雨格局的改变，从而影响到热带雨林植物的繁殖物候，甚至可能引起热带雨林植被分布和物种组成的改变。

As filter-feeding species, Coilia mystus was one part of pelagic food web. So the changes in diet composition of them can reflect the character of matter transference within the food web in Changjiang Estuary and adjacent region.

凤鲚的滤食性说明它们是浮游食物网的组成部分，对凤鲚的食物组成研究可以反映长江口及邻近水域的浮游食物网物质传递。

The species and clonal composition of an orchard will, therefore, influence the amount of selfed seed in the total seed yield.

因此，种子园的树种和无性系组成，会影响种子总产量中自交种子所占的数量。

The species composition and the biomass of phytoplankton varied whenfeeded with photosynthetic bacteria in fish ponds.

鱼塘泼施光合细菌后浮游植物种类组成及生物量均发生变化.

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.

Study on fish species composition and diversities captured by drift net from Xiamen eastern sea

厦门东海域流刺网渔获鱼类种类组成及其多样性分析

The species composition of mollusca were markedly difference in different sediment.

不同底质的红树林区软体动物组成有显著差异.污染可能是造成沙头角红树林区软体动物多样性低的重要环境因子.

Studies on the Species Composition and Ecological Distribution of Sea Urchin in Shandong Offshore

山东近海海胆的种类组成及生态分布的研究

The Species Composition and Distribution of Phytoplankton in the Beibu Bay

北部湾海域浮游植物的种类组成与数量分布

Both the grazing frequency and different number of herd influence the species composition of bird community, the bird species increasing following the decreasing of grazing frequency;

放牧频次和不同数量的牧群影响鸟类群落种类组成，随着放牧频次的减少，鸟类群落组成的物种数增加；随着放牧频次的增加，鸟类群落的生物量呈现出显著的递减。

The species composition and geographical distribution of the mangrove plants in the Taiwan Strait

台湾海峡红树植物的种类组成和地理分布

Objective To find out the species composition and distribution of fly in Shaoxing city area.

目的掌握绍兴市区蝇类的构成及分布。

The physiognomy, species composition and the structure of communities in the restoration process in Tudiling of Mao County on upper reach of Minjiang River were studied.

对岷江上游土地岭生态恢复过程中的群落外貌、物种组成和结构进行了研究。

The soil seed bank and vegetation are similar in terms of species composition, density, the indices of the diversity and similarities.

土壤种子库和地上植被在物种组成、密度、生物多样性以及相似性系数方面均具有较高的相似性。

The age structure of most dominant species community is declining, and the community species composition unstable.

样地内多数优势种群的年龄结构为衰退型, 群落的种类组成不稳定.

The species had high diversity in species composition, clear layers of arbors, shrubs and herbages.

总体上物种多样性高，种类组成复杂，群落乔木层、灌木层、草本层层次明显。

Through the investigation of temple garden plants, the species composition, function, charac-teristic, the protection status, and the relationship between temple garden plants and Buddhism, the impact of tem-ple garden plants on public psychology, etc.

通过对寺庙园林植物的调查研究，了解寺院植物的种类组成、功能特点、保护现状及其与佛教的关系，探究佛教寺庙植物对大众心理的影响。

Species composition and community structure of Chaetognatha in Beibu Bay

北部湾海域毛颚类种类组成与群落结构

Meanwhile, the species composition and dominant species of the communities also showed azonal changes due to the influences of the local environment.

同时，南于局地环境的影响，群落种类组成和群落优势种表现出一定程度的非地带性。作为群落重要的优势种，羊草不同地理种群的数量特征也表现出一定的空间分异。

Selection of tree species composition in Shenyang's urban forest communities

沈阳城市森林群落的树种组合选择

The species composition and their frequency in the herb layer of the scrubs also varied with habitats.

3种生境条件下黄柳灌丛下草本层的种类组成频度也存在差异。

DNA polymorphism and species composition of plankton in an artificial lake for breeding transgenic fish

转基因鱼试验湖浮游生物群落DNA多态性与物种组成关系

Species Composition and Distribution of Crustacea in Beibu Bay in Autumn and Winter

北部湾海域秋、冬季甲壳类的种类组成及分布

The seasonal ecological features of phytoplankton community including its species composition, population size, dominant species, saprobic indicator, diversity index and diatom biotic index were preliminarily studied at 22 sampling stations in the Chaohu Lake, Anhui Province.

对巢湖浮游植物在22个样点，四季采样，进行了种类组成、种群数量、优势种、污染指示种，多样性指数及硅藻指数等群落生态学的初步研究。

On The Composition and The Control over The Alien Invasive Species in LiaoNing Province

辽宁省外来入侵种组成及控制体系