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tropical africa
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  热带非洲
     There are 12 genera,26 species and 1 variety of the flora Bamboo in ShuangJiang County,1 genus is pantropical distribution,2 genera are tropical Asia to tropical Africa distribution,4 genera is tropical Asia distribution. There are 3 genera in east Asia and 2 genera are endemic to China.
     双江县拥有竹类12属26种1变型,泛热带分布1属,热带亚洲至热带非洲分布2属,热带亚洲分布4属,东亚分布3属,中国特有分布2属.
短句来源
     (3) Tropical Asia with 26 genera, including 5 subtypes, (4) Tropical Africa with 13 genera, including 5 Subtypes;
     (3)热带亚洲分布型,含5个亚型和26属; (4)热带非洲分布型合5个亚型和13属;
短句来源
     Meliaceae is a pantropical family comprising about 51 genera and 550-600 species mainly distributed in tropical Old World. Tropical Asia and Tropical Africa are the two present distribution centres of the family.
     楝科为泛热带分布科,全世界有51属,约550—600种,分布于旧世界热带地区有46属,热带美洲有8属.热带亚洲和热带非洲为楝科两大现代分布中心.中国楝科共15属,61种,占世界属总数的29%,种总数的10%。
短句来源
     3.Tropical Asia and Tropical Australasia(2 genera),4.Tropical Asia to Tropical Africa(1 genus);
     3,热带亚洲至热带大洋洲分布(2属); 4.热带亚洲至热带非洲分布(1属);
短句来源
     From the geographical elements,it is grouped into:Cosmopolitan element(46.1%),Pantropical element(6.1%),Tropical Asia&Tropical Africa element(0.7%) and North Temperate element(13.0%).
     (2)泛热带成分(6.1%); (3)热带亚洲-热带非洲成分(0.7%);
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  “tropical africa”译为未确定词的双语例句
     THE MAIN CAUSE OF THE PERSISTENT DROUGHTS IN SAHEL OF TROPICAL AFRICA AND THE INCREASING EVENTS OF EL-NINO FOR RECENT YEARS
     近年来非洲热带Sahel地区持续干旱和厄尼诺现象增多的主要原因
短句来源
     Pennisetum purpureum which originated in the tropical Africa planted in Nanjing and other similar warm temperate regions do only vegetative growth and can not ear and flower because of the limited light and temperature conditions. P. purpureum cv.N_(51)is the most semsetive to short-day treatment among N_(51),N_(67)and dwarf napiergrass in this paper.
     本试验涉及的 N_(51)、N_(67)和矮生象草中,以 N_(51)对短日处理最敏感,9小时/天短日处理3~4周能有效地诱导N_(51)抽穗开花;
短句来源
     The comparison between the rain forest of Yunnan and the ones of the world revealed that the rain forest of Yunnan has a slightly lower species richness than typical lowland rain forests of southeast Asia, but higher than rain forests of tropical Africa.
     从与世界不同地区热带雨林的比较亦可见,云南热带雨林有类似的树种频度分布规律,单位面积上的物种多样性比典型的东南亚低地热带雨林稍低,但比非洲的热带雨林要高。
短句来源
     Tephrosia vogelii from tropical Africa was excellent insecticidal plant.
     非洲山毛豆原产于热带非洲,是一种优异的杀虫植物。
短句来源
  相似匹配句对
     Into Africa
     徒步非洲(二)
短句来源
     AFRICA
     非洲
短句来源
     Tephrosia vogelii from tropical Africa was excellent insecticidal plant.
     非洲山毛豆原产于热带非洲,是一种优异的杀虫植物。
短句来源
     ON HISTORICAL STATUS AND ROLE OF THE NATIONAL BOURGEOISIE IN TROPICAL AFRICA
     略论热带非洲民族资产阶级的历史地位与作用
短句来源
     Tropical Timber Market
     国际热带木材市场
短句来源
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  tropical africa
65 species of annual and perennial herbs and sub-shrubs that are native to southern and tropical Africa.
      
The present study is a step towards preparing a systematic inventory of grass phytoliths in western tropical Africa.
      
Diversity of lobate phytoliths in grass leaves from the Sahel region, West Tropical Africa: Tribe Paniceae
      
The latter section possibly originated from southern South American ancestors, diversified in tropical America after the uplift of the Andes and reached the Holarctics and tropical Africa by long range dispersal of diaspores.
      
The pollen grains ofSesamothamnus lugardiiStapf (Pedaliaceae of subdesert regions of SE tropical Africa) are associated in acalymmate tetrads (cross wall cohesion), with a tectate and perforate exine and 8-12 colpi.
      
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The family Araceac with. 105 genera and approximately 2500 species is almost world-wide in distribution, it inhabits most major ecological zones. In this paper the areas of genera are classified into 12 distribution patterns and 29 subpatterns, namely. 1. Cosmopolitan; 2. Pantropic with 8 genera, including 3 subpatterns; 3. Old World Tropics with 7 genera, including 3 subpatterns; 4. Tropical Asia with 27 genera, including 5 subpatterns; 5. Tropical Africa with 13 genera, including 5 subpatterns;...

The family Araceac with. 105 genera and approximately 2500 species is almost world-wide in distribution, it inhabits most major ecological zones. In this paper the areas of genera are classified into 12 distribution patterns and 29 subpatterns, namely. 1. Cosmopolitan; 2. Pantropic with 8 genera, including 3 subpatterns; 3. Old World Tropics with 7 genera, including 3 subpatterns; 4. Tropical Asia with 27 genera, including 5 subpatterns; 5. Tropical Africa with 13 genera, including 5 subpatterns; 6. Tropical Australia with 1 genus; 7. Neotropic with 32 genera, including 5 subpatterns; 8. North Temperate with 6 genera, including 4 subpatterns; 9. Meditteraneae with 7 genera, including 3 subpatterns; 10. Central Asia with a few species, without endemic genus; 11. Eastern Asia with one genus; 12. South Africa with 3 genera. The discussion on ecology of genera is proceeded along distribution patterns.

本文将天南星科105个属的分布区归纳为12个分布类型和29个亚型,对每一类型的属进行生态地理分析。本科计有88个热带属,占全科的83.8%,是一个热带科。全科有两大分化中心:热带亚洲为属的多样化中心,热带美洲是种的分化中心。根据天南星科各属的生态地理研究,结合到科的系统发育程序,作者得出结论说:天南星科的原始类群在晚白垩纪时起源于亚洲大陆南缘,即欧亚古陆的亚洲南缘地带的水域生态环境。

Mt. Dabie is situated in the area where the boundaries of three provinces (Anhui, Hubei, Henan)meet. Its summit of the highest peak(31~044'N, 106~022'E, Alt. 1774m)lies in Anhui. The northern part of Mr. Dabie in Anhui is the main part of the whole mountain and encompasses Jinzhai County, Huoshan County, and part of Shucheng County.Since this region is located at the transitional area between subtropic zone and warm temperate zone and at the confluence of three floristic provinces(E. China, C. China, N. China),...

Mt. Dabie is situated in the area where the boundaries of three provinces (Anhui, Hubei, Henan)meet. Its summit of the highest peak(31~044'N, 106~022'E, Alt. 1774m)lies in Anhui. The northern part of Mr. Dabie in Anhui is the main part of the whole mountain and encompasses Jinzhai County, Huoshan County, and part of Shucheng County.Since this region is located at the transitional area between subtropic zone and warm temperate zone and at the confluence of three floristic provinces(E. China, C. China, N. China), the flora of this region is comparatively rich and varied in species. According to the preliminary statistics, the vascular flora comprises 1477 spp. (incl. ssp. and var. ) in 648 genera and 173 families. Of these, there are about 1380 species of seed plants, belonging to 595 gen. and 146 fam. In the 595 genera, there are 28 world monotypic genera, 77 oligotypic genera and 16 endemic Chinese genera. Most of them are phylogenetically ancient or primitive.The basic floristic features of this region are briefly summarized as follows: 1) The floristic elements are comparatively rich; 2) There are many ancient and relic elements in this region; 3)There are less endemics in this region; 4)The flora shows more obvious transition.The geographical distribution of seed plants of this region can be divided into 15 types., as follows Cosmopolitan (62 genera); Pantropical(97); Discontinuous between tropical America and tropical Asia(8); Old-world's tropical(20); Tropical Asia to tropical Oceania(17); Tropical Asia to tropical Africa(13);Tropical Asia (22); North temperate(131); Discontinuos between E. Asia and N. America (54); Eurasia temperate(46); Temperate Asia(11); Mediterranean, W. Asia to C. Asia (2); C. Asia (1); E. Asia(95); Endemic to China (16). Based on the geographical elements of this region, the genera of temperate and subtropic distributional patterns make up 66.8%, and the genera of tropics 33.2%.

安徽大别山北坡是亚热带与暖温带的过渡地带和华东、华中、华北三大植物区系的交汇区,植物种类比较丰富。据初步统计,该区有维管植物173科648属1477种,其中种子植物有146科595属1380种。该区植物区系具有下列基本特点:1)区系成分比较丰富;2)古老和孑遗成分繁多;3)特有成分较少;4)区系成分过渡性明显。该区种子植物可区分为15种地理成分(分布区类型),其中热带分布的属占33.2%,温带和亚热带分布的属占66.8%。

Tropical forests are one of the earth's most ancient ecologicalsystems and most valuable natural resources as well. The FAO/UNEPTropical Forest Resources Assessment project concluded that in 1980,the total of 1935 million hectares of tropical forests represents 44.8 perce-nt of the global forest areas, with the total volume of standing timberbeing 181. 3 billion m~3. However, the serious destruction of tropical fore- sts has been a terrific problem and being paid close attention by internat-ional...

Tropical forests are one of the earth's most ancient ecologicalsystems and most valuable natural resources as well. The FAO/UNEPTropical Forest Resources Assessment project concluded that in 1980,the total of 1935 million hectares of tropical forests represents 44.8 perce-nt of the global forest areas, with the total volume of standing timberbeing 181. 3 billion m~3. However, the serious destruction of tropical fore- sts has been a terrific problem and being paid close attention by internat-ional societies in recent years. For the period 1981-1985, 11.3 million hec-tares of tropical forests were cleared every year, of which tropical Amer-ica deforested 5.61 million (49.6%) annually and tropical Africa andtropical Asia lost forests of 3.68 million and 2.01 million separately.The direct causes leading deforestation include mainly: (1) Shiftingcultivation. The destroyed tropical forests by shifting cultivation cove-red almost half of the total areas of deforestation in global tropics in1981-1985: (2) Over-firewood gethering. Firewood-deficient populationswill increase from 1 600 million in 1980 to 2 700 million in 2000 and defi-cient firewood will amount to 900 million m~3 annually: (3) Over-pasture. The number of livestock in many countries has exceeded the cap-acity of herding on the existing grazing-land which results in enlarginggrasslands in forests: (4) Illegal felling and robberlike cutting, that isfelling valuble species regardless of destruction of other species around, andsome developed countries seeking after timber resources from developingcountries for the purpose of preserving thier own forest resources whichalso bring about robberlike cutting: (5) Forest fire. 0. 2 million forest firesoccur in the world annually and the areas destroyed cover more than 15million hectares; (6) Unfit national policies and development projects,such as transmigration programmes, dams and reservoirs construction, roadconstructions etc, some of these projects were subsidized by internationalaid agencies. The serious destruction of tropical forests has created graveendangerment on global ecosystem resulting in critical consequences: diso-rder of nutrient cycle, loss of soil fertility, decrease in animal and pla-nt species, soil erosion, flood and drought, desertification and climatechange.

森林资源的消长与社会经济发展密切相关,而林业的兴衰又直接关系到国民经济和社会的发展。当前,世界林业面临的“四大危机”大部分又是与热带林的破坏密切相关的。因此,研究热带林发展战略是研究当前世界林业的核心问题。本文根据国际组织和各国的大量文献,着重就世界热带林的现状、毁林速度、毁林模式、原因和后果等问题进行了论述。

 
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