Evidence from other studies suggests that exclusion of fire results in markedly decreased plant-species richness, often with an increase in tree density.
来自其他研究的证据表明，没有火灾会导致植物物种丰富性显著减少，通常还会伴随着树木密度的增加。
The species richness and cell abundance of Chaetoceros were characterized by a typical seasonal pattern.
角毛藻的种类丰富度和细胞丰度具有典型的季节性特征。
Combine species richness of GIS system.
结合物种丰富度分析的GIS系统。
Peninsular forests have few or comparable species richness.
片断化林地和半岛型林地含有较多的外来种。
Fig. 3 Species richness estimation results with different methods.
图3基于不同方法的物种丰富度估计结果。
Fig. 4 Responds of tree species richness to environmental factors.
图4树种丰富度对环境因子的响应。
Species richness was positively correlated with aboveground biomass.
物种丰富度与地上生物量呈显著正相关。
The species richness increased gradually with prolonging of restoration years.
土壤纤毛虫物种数随恢复时间的延长逐渐增加；
Species richness and evenness were unrelated to similarity in species composition.
物种丰富度和均匀度均与物种构成上的相似性没有显著相关关系。
As mentioned above, the fish nematodes from Yellow Sea has a low species richness.
异尖科宫脂属线虫为黄海鱼类线虫的优势种群。
The results show that there are great discrepancies of plant species richness among different households.
结果表明：不同农户之间薪炭林物种丰富度和农业物种丰富度指数差异较大。
In the process of secondary succession from conifer - broadleaf forest to broadleaf forest, species richness fluctuated remarkably.
在针阔混交林向阔叶林演替过程中，物种丰富度指数表现为较大的波动性。
Forest structure can be modified by forest tending, which can affect the species richness and abundance of wildlife in forest stand.
野生动物是森林的重要组成部分之一，森林抚育会引起森林结构的变化，而森林结构决定森林野生动物的种类、数量和分布。
Species richness of family, genera, species, tree, and shrub decreased at the early stage and then increased with community succession.
科、属、物种、乔木及灌木物种丰富度随着恢复时间的延长呈现先减后增的趋势。
Conclusion: Species richness and abundance indices varied significantly in different types of ectoparasite communities among different hosts.
结论：鼠类体外各寄生虫群落物种丰富度和多度随宿主动物种类不同而变化较大。
Both the species richness and the abundance of predacious and neutral insects were relatively smaller, but predators had the highest evenness index.
捕食性和中性昆虫的种类和数量相对较少，但捕食者的均匀度最高。
The results showed the followings. (1)During different periods, the species richness index were different under different field management conditions.
结果如下：（1）不同时间不同管理条件下节肢动物群落的种类丰富度不一致。
The flower-visiting hoverfly abundance at the low site is higher than that of the high site, while the species richness is lower than that at the high site.
低海拔样地访花食蚜蝇的多度高于高海拔样地，而物种丰富度低于高海拔样地；
Fig. 4 Responds of tree species richness to environmental factors. The solid line shows the estimations of tree richness, and the dashed lines indicate 95% confidence interval.
图4树种丰富度对环境因子的响应。图中实线表示树种丰富度的期望值，虚线表示95%置信区间。
Wildlife is one of the key components of forest. Forest structure can be modified by forest tending, which can affect the species richness and abundance of wildlife in forest stand.
野生动物是森林的重要组成部分之一，森林抚育会引起森林结构的变化，而森林结构决定森林野生动物的种类、数量和分布。
The plant species richness index is not positive relevant to species evenness index for which represents the evenness extent of species distribution instead of the quantity of species.
物种丰富度指数与均匀度指数并非存在正相关关系，均匀度指数反映的是物种分布的均匀程度，并不反映其物种数量的多少。
Temporally, the species richness and cell abundance of Chaetoceros were characterized by a typical seasonal pattern, with the highest in spring and summer and the lowest in autumn and winter.
种类丰富度和细胞丰度在季节分布上表现为春夏季高于秋冬季，而在空间分布上总体表现为湾口高，向内湾逐渐降低。
Friends of the south section K93K154, woody herb community species richness was higher than that of pure herb community, and woody and herbaceous communities stability than pure herb community.
南友K 93 K 154路段，木本草本植物群落物种丰富度明显大于纯草本植物群落，且木本草本植物群落的稳定性高于纯草本植物群落。
Guizhou species richness and the complex and diverse fauna, making Guizhou has a unique sub-tropical vegetation in the nature, which accounts rich occurrence of epiphyllous liverworts in this region.
贵州物种的丰富性和区系的复杂多样，使得贵州植被具有独特的亚热带性质，并在这样的气候条件下孕育了丰富的叶附生苔种类。
Much focus is put on species numbers or 'richness'.
通常人们把关注点放在物种数量或者丰富程度上。
Scientists have formally described some 1.7 million species, and estimates of total richness run from 3 million to 10 million.
科学家们正式描述了一百七十万物种，总丰富度估计可能在三百至一千万之间。
When ecosystems lose biological richness, they also lose resilience, becoming more susceptible to the effects of climate change, invasions of alien species, and other disturbances.
生态系统一旦失去其丰富性，同时也会失去其恢复性，面对气候变化、外来物种入侵和其他骚扰，它们会变得更加脆弱。
According to the investigation and statistics of urban garden plant species in Xiamen island, the current status and the richness of the urban garden plants were analyzed.
通过对厦门岛城市园林植物资源的调查与统计，分析了厦门岛园林绿化树种资源现状及绿化树种丰富度。
According to the investigation and statistics of urban garden plant species in Xiamen island, the current status and the richness of the urban garden plants were analyzed.
通过对厦门岛城市园林植物资源的调查与统计，分析了厦门岛园林绿化树种资源现状及绿化树种丰富度。
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