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The results of a Preliminary investigation on Resources of medicinal plants in the coastal area in Eman township, Danzhou city, Hainan province, shows that there are 78 families 208 genera 236 species of medicinal vascular plants in the area, Including 4 families 4 genera 4 species of Pteridophyte, 63 families 184 genera 209 species of Dicotyledon, and 11 families 20 genera 23 species of Monocotyledon.

2农业部热带作物种质资源利用重点开放实验室,海南儋州571737;3海南大学园艺园林学院,海南儋州571737海南省儋州市峨蔓镇沿海药用植物资源初步调查结果表明,该地区有药用维管束植物78科208属236种,其中蕨类4科4属4种,双子叶植物63科184属209种,单子叶植物11科20属23种。

In relationship with vegetations of Yunnan, the genera of Tropical Asia, Old world tropics and Tropical Asia to Australia distributions occur mainly in the tropical forests in southern Yunnan; the genera of Pantropical and Tropical Asia to Tropical Africa distributions occur mainly in the vegetations on dry and hot valleys; the genera of North temperate distribution occur mainly in forests on mountains with a cold and wet climate, while the genera of East Asian, East Asian and North America disjunct, and Old world temperate distributions occur mainly in the vegetations of the area with a warm climate.

在与云南植被的关系上,热带亚洲分布属、旧世界热带分布属和热带亚洲至热带大洋洲分布属是云南热带森林的主要成分;全热带分布属和热带亚洲至热带非洲分布属是干热河谷植被的主要成分,北温带分布属主要出现在冷湿山地森林植被中,而东亚分布属、东亚和北美洲间断分布属及旧世界温带分布属与温凉气候地区的森林植被联系相对密切。

Climatic gradients were based on data sets from 841 meteorological stations throughout China. Definitions for floristic distributional patterns were based upon the work of Prof. Z. Y. Wu. Most of these floristic distributional patterns were strongly correlated with the geographic gradients in climate, except for cosmopolitan, cultivated and invasive genera. Tropical genera form a large fraction of the total genera (ranging from 0.84% to 94.38% in the regional floras) with the highest proportion in southern Yunnan and Hainan Island. Tropical genera occur predominantly in southern China of 0° N latitude and decreased with increasing latitude, as would be expected. Interestingly, the disjunct Tropical Asia and Tropical America distribution were not restricted to southern latitudes. Temperate genera account for 5.1% to 98.83% of the total genera in regional floras with the highest proportion in the province of Xinjiang. Most of these genera followed geographic gradients in climate as expected (temperate genera conspicuously dominate the landscape at higher latitudes), except the East Asian and North American disjunct distribution, Eastern Asian distribution and Chinese endemic distribution. Generally, most plant genera demonstrated some correlation with climatic and geographic gradients. The most important gradients were those of annual air temperature and precipitation. A small fraction did not demonstrate significantly particular pattern:"Cosmopolitan","East Asian and North American disjunct","Eastern Asian" and "Chinese endemic" distributions. The North Temperate distribution had the highest correlation with mean annual air temperature and precipitation.

结果如下:(1)除世界分布、栽培和入侵成分外,大部分中国种子植物属的地理成分的分布与地理相关密切;(2)热带分布属(泛热带分布、热带亚洲至热带美洲间断分布、旧世界热带分布、热带亚洲至热带大洋洲分布、热带亚洲至热带非洲分布及热带亚洲分布合计)占各地方植物区系的0.84%到94.38%,其最低值出现在中国西北部的新疆和青海地区,最高值出现在中国云南南部和海南;(3)热带分布属在<北纬30°的地区占优势,除热带亚洲至热带美洲间断分布外,其它热带成分随纬度增加迅速减少;(4)温带分布属(北温带分布、东亚和北美间断分布、旧世界温带分布、温带亚洲分布、地中海区、西亚到中亚分布、中亚分布和东亚分布合计)占各地方植物区系的5.1%至98.83%,其最高值出现在中国西北部的新疆地区,最低值出现在中国云南南部和海南;(5)除东亚和北美间断分布、东亚分布和中国特有分布外,其它温带成分随纬度增加迅速增加;(6)在温带成分中,东亚和北美间断分布及东亚分布属主要出现在中国亚热带到暖温带地区,北温带分布、旧世界温带分布和温带亚洲分布属在中国北部占优势,而地中海区、西亚到中亚分布和中亚分布属则在中国西北部占优势;(7)除世界分布、东亚和北美间断分布、东亚分布和中国特有分布外,所有其他成分都显示了与气候因素密切相关,其中,北温带分布属与年均温和年降雨量最为密切相关。

On the basis of molecular data, Gaultheria is not a member of the tribe Andromedeae in which it w as traditionally treated but is in a tribe of its own, Gaultherieae, along with other related genera Molecular analyses of samples of the genus from America and related genera have revealed that Gaultheria could be considered paraphyletic if the closely related genera of the "wintergreen group", i e., Diplycosia, Tepuia and Pernettya, are excluded These genera should be treated as part of Gaultheria; however, an infrageneric system of the genus may not be well established without sampling the Asian members of the genus.

对白珠树属产於美洲的类群和相关类群的分子系统学的初步研究则表明,该属与Diplycosia、Tepuia和Pernettya等属关系密切,可能应将这几个属并入到白珠树属中,但其属下分类系统关系还需要对产於亚洲的类群进行深入的研究后才能确定。

Based on the investigation of vegetation and plant diversity, there are 2702 species of vascular plants belonging to 221 families, 974 genera in Xiaoxi national nature reserve, among which 8 families, 17 genera, 25 species were gymnosperm, and 172 families, 860 genera, 2381 species were angiosperm, 41 families, 87 genera, 296 species were fern.

对湖南省小溪国家级自然保护区中的植物多样性进行了研究,结果表明:保护区内有维管束植物221科974属2702种,裸子植物8科17属25种,被子植物172科860属2381种,蕨类植物41科87属296种。

Among them,73 genera and 36 families,occupies 80.23% of the total number of the genera and 78.26% of that of the families, were tropically and subtropically distributed genera and families, the other 18 genera and 4 families,merely occupied 19.77% of the total number of the genera and 8.70% of that of the families,were temperately distributed genera and families,which suggested that the variation of the altitude might affect the plant composition of communities in some degree.

热带性成分科、属与温带性成分科、属各有36科、73属和4科、18属,分别占样地种子植物科、属总数的78.26%、80.23%和8.70%、19.77%,表明热带性区系成分在群落中的优势地位,同时一定数量的温带成分的入侵,反映出海拔高度变化在一定程度上对植物区系组成的影响,表明鼎湖山山地常绿阔叶林具有向中亚热带常绿阔叶林过渡的特点。

Followed successively by Bacillariophyta, with 31 species of 18 genera, taking up 19.38%; Euglenaphyta, with 15 species of 3 genera; Cyanophyta, with 7 species of 4 genera; Cryptophyta, with 3 species of 2 genera; Pyrrophyta and Chrysophyta, with 2 species 2 genera; Xanthophyta, with 1 species 1 genera.

浮游植物是水生态系统中的初级生产者,是水生生物群落结构中的重要组成部分,是水环境质量的重要指示生物,浮游植物的种类组成和数量变动都可以反映水质变化的情况。

A total of 19 algal genera were indentified, including 2 genera of Cyanophyceae、6 genera of Chlorophyceae, 9 genera of Bacillariophyceae、2 genera of Euglenophyceae. In Apirl, the dominant algal genus of the east-southern water gate and the southern new Plant 7 were Oscillatoria. In the other two months, the dominant algal genera of the three sample sites were diatoms.

在四月份东南水门与南7新厂主要优势藻属是颤藻属,其他月份与地点皆以矽藻为主,所以结果显示麦寮大排以矽藻为主要优势族群,以七月份含量最高时可占七月份总藻类数的91.6%左右。

Based on the distribution of the genera in the world,the eight distribution types of the genera were divided.In addition,the distribution characters of the Perlidae in China were also probed preliminarily.So far two subfamilies,four tribe and twenty genera have been found in China.Ten of them,of which three genera are endemic to China,are the Oriental genera;one Palaearctic genus;three Oriental-Palaearctic genera;one Oriental-Nearctic genus;four Oriental-Palaearctic-Nearctic genera and one Oriental-Palaearctic-Nearctic-Afrotropical genus.

文中还就中国郋科昆虫的地理分布及特点作了初步的探讨,结果表明:在我国已知的2亚科4族20个属中,东洋区分布的有10个属,其中有3个属仅分布于我国;古北区分布的有1个属;东洋-古北区分布的有3个属;东洋-新北区分布的有1个属;东洋-古北-新北区分布的有4个属;东洋-古北-新北-非洲区分布的有1个属。

One hundred and thirty four families, 578 genera and 1197 species are recorded in this area. According to the information of historical geology and natural conditions, the composition of seed plant flora and the areal-types of genera were analyzed. The results showed that its origin was rather ancient and its geographical compositions were complicated. There were many species of rare and endangered plants, e.g. Taxus chinensis var. mairei, Bretschneidera sinensis, Emmenopterys henryi, Fokienia hodginsii, Torreya grandis, Phoebe bournei, Ormosia henryi, and so on. Most of these plants had high value in economics and scientific research. According to statistics and analysis of genera in the present flora, 578 genera were divided into 14 areal-types. The ratio of tropical and temperate genera was respectively 48.6% and 49.2%, so its flora was characterized by transitional floristic elements, and in wide connection with the world.

该地区植物种类丰富,共有野生种子植物134科、578属、1197种;根据地史资料和自然条件,通过对种子植物种类的组成和分布区类型的分析,认为该区系起源古老,区系成分复杂;珍稀特有植物多,如南方红豆杉、钟萼木、香果树、福建柏、榧树、闽楠、花榈木等大量古老树种,并且绝大多数具有重要的经济价值和科研价值;区内578属可分为14个类型,热带和温带分布的属分别占48.6%和49.2%,具较明显的南北过渡的现象,与世界各地有广泛的联系。

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