查询词典 richness

Plant species richness and evenness showed different changes in summer and winter meadows.

试验显示，物种丰富度和均匀度在夏季牧场和冬季牧场出现不同的变化。

The results showed that sample area influences the community species richness, species diversity index and evenness markebly.

结果表明：取样面积对群落物种丰富度、多样性指数及均匀度的测度结果具有明显影响。

This research was conducted in degraded rangeland at the southwestern edge of the Mu Us sandland, Yanchi county, Ningxia, the soil seedbank features and its relation to vegetation was analyzed using similarity analysis and ordination method, the results show that seeds within soil distribute mainly in 0~5 cm soil layer, less seeds in 6~15 cm soil layer in exclosed and non-exclosed rangeland, for seeds in exclosed soil, species richness and diversity index H are higher, while D is lower, exclosure measure, generally speaking, can increase plant species and amount of vegetation and seeds in soil, some annual plants, mesophytes and halophytes appears in the soil or surface.

以毛乌素沙地西南缘宁夏盐池县的退化草场为研究对象，采用相似性分析和排序方法对封育和未封育草场土壤种子库的特征及其与地上植被间关系进行了研究，结果表明无论封育区还是未封育区，土壤种子库中的种子主要分布于0~5cm的土层，6~15cm土层的种子数很少；封育区土壤种子库的物种丰富度大于未封育区，物种多样性则表现为H 值较大，而D值较小，总体上看封育措施可以提高地上植被和土壤中种子的种类和数量，一些一年生植物、中生植物和盐生植物开始出现在地面或土壤种子库中。

The 10 a plot had the highest community average height, abundance, and above ground biomass, but the community average increased with enclosure time and the 25 a plot had the highest community average coverage. Enclosure for 10 a gave the highest species diversity index in the third plots, while 15 a had the highest' richness index and lowest evenness index. The highest evenness index was in the non-enclosure plot. Exclosure appears to maintain or conserve, rather than increase plant diversity in contrast to non-enclosure.

结果表明，围封10年样地群落的高度、多度以及地上生物量最大，而群落的盖度则随封育年限的增加呈显著增加趋势，在封育25年达到最大；围栏封育的不同年限也显著影响了群落的物种多样性，在围封10年样地群落具有最高的多样性指数，围封15年样地具有最高的丰富度指数，而均匀度指数则是在未封育群落中表现为最高值，最低值是在物种丰富度最高时出现。

Their churches varied in dimensions and richness, according to the exigencies of the place.

他们的教会都各有不同的尺寸和丰富性，根据需要来的地方。

So far as I could see, all the world displayed the same exuberant richness as the Thames valley.

我起初总喜欢把这个通风系统和这些人的卫生设施联系在一起。

Moreover, the nonrandomness of the distributions of endpoints or midpoints implied that asymmetrical hump-shaped curve of the species richness might come from the combination of the favorableness hypothesis, the productivity hypothesis, and the mid-domain effect.

进一步比较鸟种海拔分布范围的所在位置，其观察值与预测值的差异，显示繁殖鸟类种丰富度在海拔梯度上的不对称驼型分布，可能是由喜好假说、生产力假说及中间区域效应的合成效应产生。

Reality constrains our self-knowledge,yet fictitiousness ensures us to discover the secret of existence and experience the richness of life.

现实限制着我们对自我的认识，文学虚构却能够让我们发现存在的秘密，体验生命的丰富性。

However, the difference of the richness and relative abundance in the bacterium of the gastrointestinal walls in both finfish species was also observed from the DGGE fingerprint with the results of richer bacterium of the gastrointestinal wall in Ephippus orbis compared to that in Lutjaous sebae, which might due to the different natural living habits.

同时，两种鱼消化道壁之间在细菌多样性及相对丰度上亦存在明显区别，圆白鲳消化道壁细菌多样性要高于川纹笛鲷，这可能归因于川纹笛鲷与圆白鲳在天然环境中栖息地的差异性。

The beautiful scenery, bright city lights, rich cultural heritage all contribute to Taiwan's appealing presence. Its resilience and vitality have quietly taken root and passed down the ages. Its cultural richness is a manifestation of strength and forthrightness.

她，如诗如画的山光水色，车水马龙的都会剪影，沈淀了丰厚扎实的内涵，展露了精采动人的风貌，强韧、昂扬的生命力，默默地在这儿扎根传衍，绵延、圆融的文化蕴含，呈现出，它那内敛的胸襟，和泱泱的气度。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。