多样性

The allelic diversity in terms of number of alleles per locus and expected heterozygosities in cultured populations N=8.0-9.4, H(subscript e=0.754-0.787 was considerably lower than that found in the wild populations N=11.3-15.0, H(subscript e=0.821-0.866. Allele distributions at all seven microsatellites indicated that the cultured populations lost some rare alleles belonging to wild populations. The small number and the biased sex ratio of abalone for hatchery broodstock might be responsible for the remarkable reduction of genetic variation in the studied populations.

结果表明，从等位基因数与杂合度上分析，养殖群体(N=8.0~9.4， H=0.754~0.787)遗传多样性显著低于野生群体N=11.3~15.0， H(下标 e=0.821~0.866；等位基因频率分布揭示出野生群体中一些稀有等位基因在养殖群体中有所丢失；亲鲍选用数量少与性别比例不均衡可能是产生养殖群体中遗传多样性显著减少的原因。

Based on the demonstration activities in Deng Kou county of Inner Mongolia, the comparison of impacts of conventional agriculture and organic farm on biodiversity is analyzed. The results shows that the development of organic farm can improve the biodiversity protection,such as, the increasing of beneficial insects and birds.

本文通过在试验区对常规农业和有机农业分别对生物多样性的影响进行了分析比较，结果表明发展有机农业，能够促进生物多样性保护，如有益昆虫的数量增加，其中七星瓢虫最为明显，蚜虫的虫口密度降低，益鸟等生物的数量有所增加。

Species diversity is an important part of biodiversity.

物种多样性是生物多样性研究的一个重要层次。

The present status, existing problems of biodiversity and measures to be adopted were described in this paper.

从生物多样性的现状、存在的问题及应采取的措施等三个方面比较全面地叙述了我国生物多样性的情况。

The IBS has abilities to develop more general theories of the diversity of life, and to conserve biological diversity may well rest on insights from the field of biogeography.

该协会有能力从事生物多样性保护的研究，进一步发展生物多样性理论和生物地理学。

The theme of this year's International Day for Biological Diversity is "biodiversity and climate change".

今年国际生物多样性日的主题是"生物多样性与气候变化。"

There is coexistence between cultural and biological diversity.

在民族文化多样性和生物多样性之间存在协同共存的关系。

Biological diversity is the foundation of the life on earth.

生物多样性是地球生命的基础，但生物多样性遭到破坏却日益严重。

The 1992 Convention on Biological Diversity provides a framework for countries to conserve biological diversity and promote sustainable development.

1992年的《生物多样性协定》为世界各国保护生物多样性和推进可持续发展提供了一个框架。

Along with the aggravation of market competition, China Unicom Anhui Brach is facing with more and more pressures.

随着市场竞争格局的进一步形成，电信企业间的竞争不断加剧，安徽联通面临着更多的内外部压力：对内，成本压力越来越大，塞班斯法案的颁布对内控提出严格要求；对外，3G的商用日益临近，业务的多样性带来运营模式的多样性，这些都对支撑系统提出了更高的要求。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。