物种多样性

By the method of dividing niches,niching particle swarm optimization has kept the diversity of species,overcome the drawback of basic PSO,such as being subject to falling into local optimization and having the poor convergence speed,and so improved the ability of seeking global optima.

小生境粒子群算法通过划分小生境的方法，保持了物种的多样性，克服了粒子群算法容易陷入局部解，后期收敛速度慢的缺点，提高了算法的全局寻优能力。

Also the results indicated that soil properties could be changed by length of reforestation and soil quality index increased with vegetation recovery. The similarity index decreased for larger year interval between two reforested lands.

群落特征变化随林龄增加呈现一定的趋势，灌丛层生物多样性有所增加，草本层先增加后降低，均匀度变化不大，整体有所下降，而且林龄差异越大，物种的差异程度也变大。

The most worrying result was the reshuffling of ecological communities-species that live together.

科学家在墨西哥进行研究，因为那里的生物具有多样性，最令人担心的结果是生态群落——居住在一起的物种——的重组。

We show that coral assemblages differ markedly from neutral-model predictions for patterns of community similarity and the relative abundance of species.

大多数已有的理论将生物多样性解释为每个物种生态角色上的差别所产生的后果，但最近一种比较极端的观点占了上风。

In the lower region , the elevation of beach was higher, the plant density and biomass increased and the habitat space was enlarged, so the species and individuals numbers of benthos were both more than the uppers.

从低潮区、中潮区再到高潮区，植株高度及地上部分生物量逐渐增大，初级生产力的不断提高，沉积环境的稳定性加强，底栖动物多样性及物种丰度也相应增大。

The Soil Association's report, The Biodiversity Benefits of Organic Farming, concluded that the number and variety of bird, butterfly and wild plant species is greater on established organic farms.

土壤协会的报告，生物多样性的好处，有机耕作，得出结论认为，数量和种类鸟，蝴蝶和野生动物植物物种的是更大的就建立了有机农场。

So far, more than 60 invertebrate MTs have been reported each with two and more than two MT isoforms and variants respectively in most major invertebrate groups including nematodes, annelids, ech...

无脊椎动物物种间的金属硫蛋白存在着显著差异，研究无脊椎动物MTs多样性并揭示其生态服务功能，在理论与实践上都至关重要。

The journal publishes original and significant contributions on the systematics and phylogeny of invertebrates worldwide, including papers on defined taxonomic groups and on the phylogeny, biogeography and/or other aspects of biodiversity and general biology of the group; contributions on the systematics of selected species; short, general papers, pertinent to invertebrate systematic biology on methodology, theoretical systematics, cladistics, phylogeny, molecular biology and biogeography; reviews of general invertebrate systematics, containing innovative data or overviews of current theories.

杂志刊载世界范围内的无脊椎动物的系统分类学和系统发育的原始和重要投稿，包括关于精确分类种群和种群生物多样性与普通生物学的系统发育，生物地理和/或其它方面的论文；关于选择物种系统分类学的投稿；有关无脊椎动物系统生物学的方法学，理论系统分类学，遗传分类学，系统发育，分子生物学和生物地理的短概括性论文；无脊椎动物普通系统分类学的评论，包括新数据或当前理论的观点。

Once linked by land, the Western Ghats and the island nation of Sri Lanka together make up a biodiversity hotspot—a place with threatened natural habitats that are rich in species, especially plants, that live nowhere else.

一旦连接的陆路，西高止山脉和岛国斯里兰卡共同构成了一个生物多样性的热点，一个地方的自然栖息地的威胁有丰富的物种，特别是植物，生活无处其他。

Once linked by land, the Western Ghats and the island nation of Sri Lanka together make up a biodiversity hotspot—a place with threatened natural habitats that are rich in species, especially plants, that live nowhere else.

曾经与**相连的高止山脉西麓与岛国斯里兰卡共同构成了一个富含其他地方不存在的物种的生物多样性的热点地区，如今却成了受到威胁的自然栖息地。

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！