多样性

The results show that the indexes of diversity and evenness are 1.634 and 0.8397,both locate on middle position.

结果表明，香日德绿洲景观多样性指数和均匀性指数分别为1.634和0.839 7，均处于中等水平。

With detailing division, the landscape diversity and evenness indices were very high.

随着景观要素类型的细分，景观多样性指数和均匀度指数都有所提高。

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。

The results showed that the indexes of diversity and evenness were 1. 634 and 0. 8397, both located on middle position.

结果表明，香日德绿洲景观多样性指数和均匀性指数分别为1.634和0.8397，均处于中等水平。

So evolution generates complexity and diversity and millions of beings and thereby gives itself room to evolve into a more powerful evolver.

所以，进化产生复杂性和多样性以及成百上千万的存在，从而给自己拓展空间，以进化成更强大的进化者。

Considering the multiplicity of existing and potential natural gas source in Shenzhen City , gas exchangeability , natural gas category and gas appliance adaptability , the selection of reference natural gas in Shenzhen City is discussed.

考虑深圳市目前及潜在天然气气源的多样性、燃气互换性、天然气类别及燃具适应性，对深圳市天然气基准气的选择进行了探讨。

The plant diversity of the grassland would be changed after exclosure due to population growth and decline, disappearance of some species and immigrant of new species.

由于围封后种群的消长、某些种群的消失及新种的进入导致草地在围封后的植物多样性也发生变化。

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 dynamic changes in community height, coverage, abundance, above ground biomass and plant diversity in Stipa bungeana typical steppe was investigated by a quadrat method. There were six treatments: Unexclosure, 5-year old exclosure (5 a), 10-year old exclosure (10 a), 15-year old exclosure (15 a), 20-year old exclosure (20 a), and 25-year old exclosure (25 a) plots.

采用样方法对云雾山干草原区本氏针茅草地群落进行长期定位监测，对未封育样地和封育5，10，15，20和25年样地群落的平均高度、盖度、多度和地上生物量以及植物多样性进行实地调查分析，以研究围栏封育对草地植物群落特征动态变化的影响。

This paper attempts to explicate through exemplification and comparison the thematic diversity and diction ambiguity of the poem.

本文通过比较例证论述了该诗主题思想的多样性和用词的模糊性。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！