物种多样性 - 网络例句 - 英语人，englisher

The results were summarized as followings: the density of planktonic crustacea in middle reach was higher than that in the lower reach whereas the species abundance and community diversity index in the lower reach were higher than that in the middle reach; the planktonic crustacea communities presented high density but lower diversity in the upper part of the middle reach, lower density but high diversity in the lower part of the middle reach and estuary, and lower density and diversity in the lower reach except the estuary.

结果表明，汉江中下游江段浮游甲壳动物的密度分布呈现出中游高于下游的特征，而物种丰度和群落多样性指数则是下游高于中游；中游上段的属于密度高但多样性低的群落、中游下段和汉江口属于密度较低但多样性高的群落，下游除汉江口外属于密度和多样性均较低的群落。

This article in summarizes in our country nature protection area construction achievement foundation, outlined the nature protection area to each kind of natural ecosystem, the wild biology, the domesticated species, the wild blood relationship to plant and the idioplasm resources conservation present situation, including has constructed the nature protection area for protection biodiversity various components quantity, the area, the distribution and the management; Has appraised the nature protection area to the biodiversity various components protection effect; Has analyzed the existence question and proposed that strengthens measure which the biodiversity protects.

本文在总结中国自然保护区建设成就的基础上，概述了自然保护区对各类自然生态系统、野生生物、驯化物种、野生亲缘种及种质资源保护的现状，包括为保护生物多样性各组分已建自然保护区的数量、面积、分布及管理；评价了自然保护区对生物多样性各组分保护的效果；分析了存在问题并提出加强生物多样性就地保护的措施。

This article in summarizes in our country nature protection area construction achievement foundation, outlined the nature protection area to each kind of natural ecosystem, the wild biology, the domesticated species, the wild blood relationship to plant and the idioplasm resources conservation present situation, including has constructed the nature protection area for protection biodiversity various components quantity, the area, the distribution and the management; Has appraised the nature protection area to the biodiversity various components protection effect; Has analyzed the existence question and proposed that strengthens measure whichthe biodiversity protects.

本文在总结我国自然保护区建设成就的基础上，概述了自然保护区对各类自然生态系统、野生生物、驯化物种、野生亲缘种及种质资源保护的现状，包括为保护生物多样性各组分已建自然保护区的数量、面积、分布及管理；评价了自然保护区对生物多样性各组分保护的效果；分析了存在问题并提出加强生物多样性就地保护的措施。

This article in summarizes in our country nature protection area construction achievement foundation, outlined the nature protection area to each kind of natural ecosystem, the wild biology, the domesticated spec ie s, the wild blood relationship to plant and the idioplasm resources conservation present situation, including has constructed the nature protection area for protection biodiversity various components quantity, the area, the distribution and the management; Has appraised the nature protection area to the biodiversity various components protection effect; Has analyzed the existence question and proposed that strengthens measure which the biodiversity protects.

自然保护区建设是保护生物多样性的最有效途径。至1993年底，我国共建立各类型自然保护区763个，总面积6618万hm2，约占国土面积的6.8%。本文在总结我国自然保护区建设成就的基础上，概述了自然保护区对各类自然生态系统、野生生物、驯化物种、野生亲缘种及种质资源保护的现状，包括为保护生物多样性各组分已建自然保护区的数量、面积、分布及管理；评价了自然保护区对生物多样性各组分保护的效果；分析了存在问题并提出加强生物多样性就地保护的措施。

Using the DG index to measure the diversity of soil invertebrate assemblages was more reasonable than Shannon-Wiener Diversity Index in this case because the Acarina predominated in the samples which covered up the information of other soil invertebrate taxa, while the DG index is proposed on base of the hypothesis that every species has equal independence and importance in the community and could be compared with inter-community.

在本研究中，应用密度类群指数分析土壤无脊椎动物多样性的结果比应用Shannon-Wiener多样性指数的结果更为理想，这是因为土壤无脊椎动物由于组成结构复杂，不同类群的个体数量往往存在着巨大的差异，例如蜱螨目的较大数量常掩盖了其它类群的重要信息，多样性指数不能体现这一情况，而密度类群指数是基于各物种在群落中都有同等独立性，宜在不同群落间进行同种类比较的假设，对于复杂的土壤节肢动物群落多样性的测定可获得比较贴切的结果。

Genetic diversity of Croomia The results of inter-simple sequence repeat indicated that the genetic diversity of Croomia was very low. At the population level, the genetic diversity of C. japonica PPB = 21.20%, H_(pop= 0.0644, I = 0.0981, N_e=1.1077 was lower than that of C. heterosepala PPB = 29.81%, H_(pop= 0.0944, I = 0.1424, N_e=1.1613. But at the species level, the genetic diversity of C.

Croomia的遗传多样性分布格局 ISSR分子标记的研究结果显示，Croomia居群水平的遗传多样性很低，其中C.japonica的遗传多样性PPB=21.20％，H_(pop=0.0644，I=0.0981，N_e=1.1077稍低于C.heterosepala的PPB=29.81％，H_(pop=0.0944，I=0.1424，N_e=1.1613；而在物种水平上相反。C.japonica和C.heterosepala居群间的分化都明显大于居群内的分化，其居群间分化值F_分别为73.60％和54.99％。

The average percentage of polymorphic bands are 72.06% for ISSR and 66.67% for RAPD respectively. The genetic diversity of ginkgo revealed by ISSR (the average effective number of alleles is 1.8780, the average Nei"s gene diversity is 0.4652, and the average Shannon"s information index is 0.6574) are all higher than those by RAPD (the average effective number of alleles is 1.7842, the average Nei"s gene diversity is 0.4317, and the average Shannon"s information index is 0.6211), while the standard errors of the parameters estimated by ISSR were lower. Therefore, ISSR molecular markers are more suited than RAPD molecular markers when testing the genetic diversity of ginkgo populations and determining the genetic relationship of among populations or among individuals which are much similar hereditarily.

本文应用RAPD和ISSR两种分子标记技术，选取中国5个可能的野生银杏居群共计75个样品，对其遗传多样性进行了研究，得出以下结论：(1)用筛选出的12个RAPD引物和10个ISSR引物进行PCR扩增，分别扩增出65条和68条重复性高、清晰的条带，多态性位点百分率分别66.67%和72.06%，ISSR揭示的银杏遗传多样性(平均有效等位基因数目为1.8780，平均基因多样度为0.4652，平均信息指数为0.6574)高于RAPD所得到的结果(平均有效等位基因数目为1.7842，平均基因多样度为0.4317，平均信息指数为0.6211)，其所估算参数的标准差要低于RAPD所估算出的值，因此，在研究亲缘关系非常近的银杏物种的遗传多样性并试图确定居群间或个体间的遗传关系时，ISSR分子标记技术比RAPD分子标记技术更为合适。

This article in summarizes in our country nature protection area construction achievement foundation, outlined the nature protection area to each kind of natural ecosystem, the wild biology, the domesticated species, the wild blood relationship to plant and the idioplasm resources conservation present situation, including has constructed the nature protection area for protection biodiversity various components quantity, the area, the distribution and the management; has appraised the nature protection area to the biodiversity various components protection effect; has analyzed the existence question and proposed that strengthens measure which the biodiversity protects.

本文在总结我国自然保护区建设成就的基础上，概述了自然保护区对各类自然生态系统、野生生物、驯化物种、野生亲缘种及种质资源保护的现状，包括为保护生物多样性各组分已建自然保护区的数量、面积、分布及管理；评价了自然保护区对生物多样性各组分保护的效果；分析了存在问题并提出加强生物多样性就地保护的措施。gu'x5N0关键词：自然保护区；生物多样性；就地保护；贡献

This article in summarizes in our country nature protection area construction achievement foundation, outlined the nature protection area to each kind of natural ecosystem, the wild biology, the domesticated species, the wild blood relationship to plant and the idioplasm resources conservation present situation, including has constructed the nature protection area for protection biodiversity various components quantity, the area, the distribution and the management; Has appraised the nature protection area to the biodiversity various components protection effect; Has analyzed the existence question and proposed that strengthens measure whichthe biodiversity protects.

自然保护区建设是保护生物多样性的最有效途径。至1993年底，我国共建立各类型自然保护区763个，总面积6618万hm2，约占国土面积的6.8％。本文在总结我国自然保护区建设成就的基础上，概述了自然保护区对各类自然生态系统、野生生物、驯化物种、野生亲缘种及种质资源保护的现状，包括为保护生物多样性各组分已建自然保护区的数量、面积、分布及管理；评价了自然保护区对生物多样性各组分保护的效果；分析了存在问题并提出加强生物多样性就地保护的措施。

This article in summarizes in our country nature protection area construction achievement foundation, outlined the nature protection area to each kind of natural ecosystem, the wild biology, the domesticated species, the wild blood relationship to plant and the idioplasm resources conservation present situation, including has constructed the nature protection area for protection biodiversity various components quantity, the area, the distribution and the management; Has appraised the nature protection area to the biodiversity various components protection effect; Has analyzed the existence question and proposed that strengthens measure which the biodiversity protects.

择要：自然掩护区培植是掩护生物多样性的最有效路子。至1993岁尾，我国共成立种种型自然掩护区763个，总面积6618万hm2，约占疆域面积的6.8％。本文在总结我国自然掩护区培植成绩的基本上，概述了自然掩护区对种种自然生态体系、野生生物、驯化物种、野生亲缘种及种质资本掩护的现状，包孕为掩护生物多样性各组分已建自然掩护区的数量、面积、散布及打点；评价了自然掩护区对生物多样性各组分掩护的下场；剖析了存在题目并提出加强生物多样性就地掩护的法子。