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1.
选择我国亚热带区域76个地区(不包括行政单元)的植物区系调查和研究资料,采用主成分分析
(PCA)、TWINSPAN聚类和样带梯度分析方法,研究了我国亚热带区域植物区系地理成分的构成特征和
各成分之间的关系;各研究区域间植物区系地理成分构成的相关性和空间分异特征;并分析了贯穿我国亚热带区域的东经108.5°～111.5°和北纬29°～31°两条样带的几种区系地理成分的分布梯度。结果表明：①15种区系地理成分可以归为热带成分、温带成分、干旱区成分和东亚中心成分4组;我国亚热带各地区区系地理成分中泛热带和北温带分布的比例最高;干旱区分布诸类比例极小;东亚中心成分的比例突出,特有性强;②样点的PCA排序明显反映了北、中、南亚热带在区系地理成分构成上的差异,但亚热带东西部的差异不明显;③样带分析清晰地反映了热带、温带成分之比的梯度格局;川东鄂西地区特有分布中心的地位和世界分布与特有成分相反的分布格局。 相似文献
2.
太白山位居秦岭的中段，为秦岭山脉第一高峰。该山区是我国温带植物区系最丰富的地区之一，
约有种子植物1782种，隶属于125科，657属，包括热带属130属，温带属436属和特有属24属。该地
区20个较大科的种数，约占其全部植物区系的66.6％，其中特有种653种。本文对这些大科的性质及
其在植物区系和植被中的作用进行了分析讨论。在分析了全部属和植物群落优势种的地理分布的基础
上，着重讨论了该地区与其他九个山区的植物区系关系。
本文对植被垂直带划分；主要植物群落的基本特点和区系相似性；物种多样性与海拔高度变化的关
系以及生活型谱与不同坡向和海拔变化的关系等作了具体分析。对该地区主要植物群落的形成时期以
及对秦岭地区植物区系的过渡性质提出了自己的看法。从植物学角度出发，秦岭地区作为亚热带和温带
植物的分界线的提法与该地区的植物区系和植物群落性质以及水热条件情况不相符合 相似文献
3.
应俊生 《中国科学院研究生院学报》1994,32(5):389-410
秦岭是中国长江和黄河两大水系的分水岭，位于北纬32°5′至34°45′；东经104°30′至115°52′，最高峰达3767m。该山区是我国温带植物区系最丰实的地区之一，约有种子植物3124种，隶属于158科，892属。包括热带属220属，温带属563属，和中国特有属39属。根据该山区植物区系中各大科、主要植物群落优势种和组成种类的温带性质以及温带属在整个植物区系中的主导地位。该山区的植物区系和植被具有明显的温带性特点。特有种和非特有种的分析结果表明，该山区植物区系的特点还表现在高度特有性和以中国-日本森林植物区系为主体方面。 根据古植物学资料分析，秦岭地区植物区系的起源时间不会晚于晚白垩纪；植物群落的主要成份可能以原地生长的种类为主；秦岭及其邻近古老山区，不仅对自身的植物区系和植被具有较大的发生意义，而且对东亚植物区系具有始生性质。 相似文献
4.
《内蒙古科技与经济》2017,(8)
对陈巴尔虎草甸草原自然保护区维管植物的组成特征、区系地理成分进行了分析,结果表明:该区植物种数较丰富,有维管植物61科240属466种,被子植物占优势。科的组成分析表明,优势科现象十分显著。种的地理成分分析表明,温带成分的种占优势,热带成分的属种所占比例很小,温带属性是该地区植物区系的基本属性。 相似文献
5.
郝日明 《中国科学院研究生院学报》1997,35(6):500-510
中国种子植物特有属是局限分布于中国行政区域范围内的植物成分，就其分布特点看，集中分布于中国南部亚热带广阔区域。由于中国地域广袤，虽然大多数特有属分布在东亚自然地域范围内，但南部特有属的分布范围已进入古热带植物区的马来亚森林植物亚区的北部，而西部的特有属的分布范围已进入青藏高原地区。局限于不同地域分布的特有属，各自的起源发生、所经历的地质历史过程存在一定差别。本文以自然地理区划作为研究中国种子植物特有属分布区类型的依据，将中国特有属分布区类型划分为中国东部和中部特有分布变型、中国南部特有分布变型、中国西部特有分布变型和中国北部特有分布变型4类。其中中国南部特有分布变型所含特有属为热带区系成分，其它3个特有分布变型所含特有属为温带区系成分。这样能较客观地反映中国特有属的自然地理特征，有利于研究局部地区植物区系的地质历史演变过程。 相似文献
6.
张晓东 《内蒙古科技与经济》2018,(14)
本文对内蒙古赫尔洪德沙地樟子松自然保护区维管植物的组成特征、区系地理成分进行了分析。结果表明:该区植物种数较丰富,有维管植物65科226属448种,被子植物占优势,共444种。科的组成分析表明,优势科现象十分显著。种的地理成分分析表明,温带成分的种占优势,热带成分的种所占比例很小,主要以温带亚洲成分、北温带成分和旧大陆温带成分为主,表明温带属性是该地区植物区系的基本属性。区系地理成分复杂多样、联系广泛。 相似文献
7.
8.
通过半个世纪以来对金佛山近2000号藓类植物标本的鉴定，现确定金佛山藓类植物有40科，133
属和245种(包括4亚种、9变种和1变型)。其区系成分以东亚成分为主(33．77％)，其次为温带成分
(28．57％)及热带、亚热带成分(24．68％)。文内还全面分析了金佛山藓类植物区系及我国南北8个山区藓
类植物区系之间的关系，用排序方法统计它们之间的相似性与非相似性系数，并着重就金佛山藓类植物区 系的过渡性特点作了探讨，提出在该山区与其邻近地区，存在一个苔藓植物东亚特有属的分布中心。 相似文献
9.
湘西北壶瓶山自然保护区植物区系 总被引：1，自引：0，他引：1
壶瓶山自然保护区具有丰富的植物区系成分，现知维管束植物有205科(蕨类和拟蕨类 植物40科，裸子植物7科，被子植物158科)，839属，约1961种(包括154变种)。其中，古 和原始的科、属不乏其代表。从种子植物属的分布区类型的比较分析，该区具有我国15个种子植物属的分布区类型中的14个，表明了与世界各地区植物区系的联系程度。另一方面，该 地区的植物区系虽含有丰富的热带成分，但根据各类温带属占该区总属数的百分比以及分布于该地区的中国特有属中的木本属几乎所有都是落叶的乔木或灌木，该区的植物区系性质明显偏重于温带性质。而且，这种温带性质可能与该区的山体海拔高度有着重要的联系。 相似文献
10.
11.
郎楷永 《中国科学院研究生院学报》1983,21(3):254-265
Situated in western part of Sichuan Province, 29°30'N, 103°20'E, the sacred Mt.
Emei is one of the well-known large mountains in China. Its summit is about 3100 m ab-
ove sea level with a relative height of 2550 m.
The orchid flora in Mt. Emei so far known comprises 47 genera and 109 species,
among which 21 are epiphytes, 83 terrestrials and 5 saprophytes (Table 1.)
1. The vertical distribution of the orchid flora in the mountain.
The epiphytic orchids are concentrated in the lower region below Hongchunping
and Wanniansi (1100 m alt.), where there are 20 species, which make over 95% of epiphytic
species; the upper limit for the epiphytic orchids is Jiulaodong and Chudian ( 1800 m alt.).
The terrestrial orchids also mainly occur at the lower region below Jiulaodong and Chudian (1800 m alt.), where there are 54 species, most of which are found at even lower part of the mountain, below Hongchunping and Wanniansi (1100 m alt.). The tropicas orchids in the mountain, such as Cleisostoma, Vanda, Holcoglossum, Tropiclia, Thunia, Mischobulbum, Ludisia, Anoectochilus, Odontochilus, etc. all grow only at the lower part of the mountain below Hongchunping and Wanniansi (1100 m alt.).
2. The floristic features of the orchid flora in the Mt. Emei.
(1) The orchid flora in the mountain so far known comprises 47 genera (over 2/3
of the total orchid genera in Sichuan) and 109 species (over 1/3 of the total orchid species in Sichuan). The Mt. Emei is very rich in orchid species, as compared with neighbouring
mountains of same magnitude, such as Mt. Shennonjia in western Hubei, Qin Ling in sou-
thern Shaanxi, Jinfo Shan in south-eastern Sichuan, and Erlang Shan in western Sichuan.
(2) The orchids in the mountain are complex in floristic components as indicated
below:
1) Twenty seven species, belonging to 18 genera, are widespread, covering the whole East-Asian region.
2) Twenty three species, belonging to 15 genera, are the elements of the Sino-Japanese Subregion. Among them 13 species occur only in Japan and eastern China with the mountain ar the westernmost limit, but the other species extend westwards as far as Kangding and ErLang Shan or Baoxing in Sichuan Province.
3) Forty two species, belonging to 22 genera, are the elements of the Sino-Himala-yan Subregion, with 5 species having their range extending from the Himalayan region
eastwards to Mt. Emei.
4) Some tropical genera (8 species), belonging to Indo-Malaysian floristic elements, have the mountain as their northern limit of distribution.
The orchid flora of the Mt. Emei contains not only the East-Asian elements, but also some Indo-Malaysian elements, though its composition is mainly of the temperate and subtropical Eastern Asian (Sino-Japanese) ones.
(3) The orchid flora in the mountain is characterized by geographical vicariation and differentiation.
There are nine species-pairs (belong to genera Calanthe, Platanthera, Dendrobium etc.) of the vertical vicarism and six species-pairs (belonging to genera Tropidia, Aneoctochilus, Mischobulbum, Gymnadenia Orchis, etc.) of the horizontal vicarism in the Mt.
Emei.
Remarkable differentiation of orchid flora in the Mt. Emei is shown in the abundance of endemic elements and as clear geographical vicariation.
(4) There are 8 endemic species and one variety of orchids in the Mt. Emei, more
abundant than in Xizang. The floristic features of the orchid flora of the Mt. Emei are rich in species, compara tively complex in components, rather prolific in endemic species, and characterized by geographical vicariation and differentiation. The orchid flora in the Mt. Emei mainly consists of the subtropical and temperate East-Asian elements, with a considerable proportion of tropical elements though. 相似文献
12.
鄂西神农架地区的植被和植物区系 总被引：1，自引：0，他引：1
Shennungia is generally known as “The highest mountain in Central China”. It is
situated at latitude 31°342'N., longitude 110°35'E. in western Hupeh.
The area explored is deeply cut in all sides by five V-shaped valleys, giving the
landscape a steep topography. Its summit is about 3105 meters above the sea level, and
the relative altitude is from 1000-2000 meters.
The climate of the region is warm temperate. The differences of humidity-warmth
condition between the eastern and the western flanks are quite marked.
In western Hupeh and the adjacent area of Szechuan the rugged topography still
preserves some tracts of natural forests at higher elevations. Our vegetational survey
is confined to localities above 1500 meters. The collection of plant samples of the flora
is extended to the whole mountain from the foothill to the peak. The present article
deals with only a part of the results of our survey.
1. The vertical vegetation belts of Mt. Shennungia and relationships with other
regions: The vegetation belts on the eastern and the western flanks of the mountain
are shown in diagram 2 and 3. The comparison of the vertical vegetation zones of the
Mt. Shennungia with those of the Yülungshan in N. W. Yunnan and the eastern
Himalaya to the west and with those of Hwangshan and Central Japan to the east
is shown in table 4, It shows that the plant communities of the Mt. Shennungia are of
temperate nature, and they are more closely related to those of Hwangshan in S.
Anhwei and of Central Japan than to the eastern Himalaya.
2. Floristic composition: The generic ranges of flowering plant are relatively
distinct and stable. Various distributional patterns of genera are analysized.
1) Statistics of the genera in various distributional patterns: The total number
of genera of flowering plants in this region are 762, belonging to the following four
categories. A) tropical genera 239 (31.3%), B) temperate genera 416 (54.7%), C)
endemic genera 47 (6%), and D) comsmopolitan genera 61 (8%).
2) Endemic genera: An examination of the composition of the flora in western
Hupeh reveals that 47 endemic Chinese genera occur in this mountain of which 24 are
monotypic genera, 20 oligotypic and 2 multitypic as shown in Table 4. The arborescent
genera are nearly all deciduous. They are of temperate nature.
3) Temperate genera: There are 416 genera in wastern Hupeh. They are
subdivides into the following three groups according to their distributional patterns:
A) The north temperate genera: There are 159 genera belonging to 62 families in
western Hupeh. B) Eastern Asian genera: There are 117 genera belonging to 69
families in western Hupeh. Among them 22 are common to the western Szechuan,
adjacent regions of Yunnan and the Eastern Himalaya. The remaining 95 genera are
commom to both eastern China and Japan. C) The Eastern Asian-eastern North-
American genera: Of the total 762 genera known in western Hupeh, 64 are disjunc-
tively distributed in both eastern Asia and eastern North-America.
4) The tropical genera: Of the 762 genera of the flowering plant of western
Hupeh, 239 (31%) are of tropical nature.
Finally, our survey shows: 1. Many of the primitive temperate genera and ende-
mic relicts concentrate in western Hupeh and the adjacent region of Szechuan indica-
ting that it might be one of refuges of tertiary flora. Moreover, it might also be one
of the most important regions of differentiation, development and distribution of tem-
perature flora. 2. The vegetation of this region is not only of temperate nature, but
also of a transitional nature. 3. According to an analysis of the flora and a compari-
son of the vertical distribution of the vegetation of Yülungshan and Eastern Himalaya
to the west with Hwangshan and Central Japan to the east, the floristic affinity of
western Hupeh is more closely related to eastern China and Central Japan rather than
to the Eastern Himalaya, and phytogeographically this region is intermediate between
the Sino-Himalayan and the Sino-Japanese patterns. However, the problem of phyto-
geography of western Hupeh and the adjacent region of Szechuan is a complicated
one requiring further study.
相似文献
13.
朗楷永 《中国科学院研究生院学报》1990,28(5):356-371
兰科在横断山地区是维管束植物中的大科之一，共有91属，363种及9变种。 4属为我国特有属，其中1属为本地区所特有；155种及9变种为我国特有种。 其中69种及5变种为本地区所 特有。本文对属、种进行了分析，并对全部种的分布格局作了详细的介绍，概述了本地区兰科植物的区系组成及特点。本文从兰科植物属、种的分布提出了四川峨眉山是东亚植物区中划分中国-喜马拉雅植物亚区和中国-日本植物亚区的分界线上的一个重要的点的看法。 相似文献
14.
郎楷永 《中国科学院研究生院学报》1985,23(6):418-428
The Gongga Mountain Region, located on the eastern fringe of Qinghai-
Xizang Plateau and at the north-eastern end of Hengduan Mountains, is one of the
well-known large mountain areas in Sichuan Province. There are forty five high peaks
with the elavation of 6000 m or over in the area, among which the Gongga Mountain
is the highest one, with its summit being at the altitude of 7556 m, whereas the Dadu
River Valley in the eastern part of the area is only 1150 m above sea level; The rela-
tive height in the region is thus about 6400 m.
As we know so far the orchids in Gongga Mountain Region comprise 34 genera and
75 species with 1 variety, of which 12 species are epiphytes, 59 species with 1 variety
terrestrials and 4 species saprophytes (Table 1.).
I. The geographical distribution in the Gongga Mountain Region.
The vertical distribution of the orchids in the area.
Eastern flank: There are 39 species with I variety of orchids at 1150-2300
(-2400) m alt. in the subtropical evergreen broadleaf forest zone, of which 12 species,
such as Bulbophyllum andersonii, Dendrobium hancockii, Otochilus porrecta, etc., are
epiphytic (including a semiepiphyte, Pleione bulbocodioides), 25 species with 1 variety,
such as Bletilla formosana, Calanthe davidii, Cypripedium henryi, etc., are terrestrial,
and 2 species are saprophytic (i.e. Gastrodia elata and Neottia listeroides), the upper
limit of the real epiphytic orchids is 1800 m alt. At the altitude 2300(-2400)-3600
(-3800) m, in the coniferous forest zone, found are 23 species, including 20 terrestrial
species with 1 variety, such as Amitostigma gonggashanicum, Calanthe fimbriata, Coe-
loglossum viride, etc., 2 saprophytic species (Neottia acuminata and Risleya atropurpu-
rea) and one semiepiphytic species. There are only 2 terrestrial species (i.e. Cypripe-
dium tibeticum and Orchis chusua) at 3600(-3800)-4000m alt., in alpine shrub zone,
the upper limit of the terrestrial orchids being 4000 m alt. At 4000-4400 m alt., in
alpine meadow zone no orchids have so far been found.
Western flank: There are 14 species of orchids, such as Habenaria limprichtii,
Hemipilia flabellata, Satyrium ciliatum, etc., at 2300-2800 m alt., in the river valley
shrub zone, and they all belong to the terrestrial orchids. At the altitude of 2800-
3800m, in the coniferous forest zone found are 19 species of orchids, among which 18
species are terrestrial (such as Amitostigma monanthum, Cephalanthera longifolia, Pe-
ristylus coeloceras, etc.) and one is saprophytic. There are only 4 species of terrestrial
orchids (i.e. Cypripedium tibeticum, Gymnadenia orchidis, Orchis chusua and O. dian-
tha) at 3800-4800 m alt., in the alpine shrub-meadow zone, the upper limit of vertical
distribution of terrestrial orchids being 4400 m alt. Twelve species here are common
to the eastern flank.
II. The floristic composition of orchids in Gongga Mountain Region.
1. Twenty three species, belonging to 13 genera, are widespread in Whole East-
Asian Region.
2. Eight species, belonging to 8 genera, are the elements of the Sino-Japanese
Subregion.
3. Forty one species with 1 variety, belonging to 24 genera, are the elements of
the Sino-Himalayan Subregion, more than five times the elements of the Sino-Japanese
Subregion.
4. The floristic features of the orchids in the area.
(1) The floristic elements are mainly temperate and subtropical ones.
(2) The life form is mostly terrestrial.
(3) The species endemic to China are prolific (35 species with 1 variety, belong-
ing to 18 genera, are endemic to China, and 26 species with 1 variety are distributed
in south-western China and its adjacent region; Amitostigma gonggashanicum is endemic
to the area).
The floristic composition of orchids in the area is characterized by the dominance
of terrestrial species and temperate and subtropical East-Asian elements, though with
a few Indo-African tropical elements (such as genus Satyrium (1 species) ).
In conclusion, it may be considered that the species of orchids are abundant and
floristic elements are comparatively complex in the Gongga Mountain Region. 相似文献
15.
The Rosaceae is one of the five largest families of Xizang flora, consisting of
30 genera with 242 species, the total number of species is slightly less than those of
Compositae, Graminae, Leguminosae and Ericaceae in Xizang, amounting to 62.5% of
the total number of genera and 28% of the total number of species of the rosaceous flora
in China.
The four subfamilies of Rosaceae including primitive, intermediate and advanced
groups have been found in Xizang. These groups consist of 11 types of floristic ele-
ments, i.e. 4 genera belong to cosmopolitan, 9 genera belong to North Temperate, 3, E.
Asian-N. American, 3 Sino-Himalayan, 3 Sino-Japanesa, 2 Old World Temperate, 1
Temperate Asian, 2 Mediterranean-W. and O. Asian, 1 C. Asian, I Tropical Asian and 1
endemic to China. It is obvious that Rosaceae in Xizang comprises holarctic, Ancient Me-
diterranean and paleotropical elements, among which the temperate components are the
most dominant. The characteristics of the floristic composition of Rosaceae in Xizang
may be summarized as follows:
(1) Xizang abounds in both genera and species of the family which are diverse in
forms, including the primitive, intermediate and advanced groups, (2) The geographi-
cal elements are rather complex, mostly belonging to the temperate, among which the
Sino- Himalayan components and the elements endemic to China are dominant, (3) The
proportion of plants endemic to China and distributed in Xizang is much higher than
those endemic to Xizang itself, but there exist newly arisen species and infraspecific
forms or varieties which show that the speciation is apparently still active in Xizang.
The rosaceous flora of Xizang is a combination of old and new floristic elements, based
on the old floristic components, affected by the upheaval of the Himalayas, the differen-
tiation and speciation have been taking place in the long history.
The geographical distribution of Rosaceae in Xizang may be divided into 5 regions,
i.e. the northeastern, southeastern, southern, northwestern and northern. The rosaceous
plants are most abundant in the southeastern area, next in southern area, fewer in the
northeastern and very rare in the northwestern and northern regions. The general ten-
dency of the distribution of Rosaceae in Xizang is that the number of species gradually
decreases from the southeast to the northwest and the habit gradually changes from
trees, shrubs and herbaceous plants in the southeast to cushion-like scrubs and dwarf
perennial herbs in the northwest. These facts clearly show that the uplift of the Hi-
malayas has deeply affected the phytogeographical distribution of Xizang Rosaceae.
The rosaceous flora of Xizang has close relationships with those of the adjoring
regions, i.e. Yunnan and Sichuan. Besides, it is connected with floras of Nepal, Sikkim,
Bhutan nothern Buram and nothern India, but silghtly influenced by the Ancient Medi-
terranean flora. 相似文献
16.
中国柳属植物地理分布的研究 总被引：2，自引：0，他引：2
赵士洞 《中国科学院研究生院学报》1987,25(2):114-124
本文研究了中国产柳属植物的分布，并探讨了该属的起源与演化问题。 我国产柳
属植物255种，约占全世界总数的46％，隶属于37个组，几乎包括了该属所有的进化类型。
因此，中国是世界柳属植物种数最多、类型最丰富的地区。青藏高原的出现，是形成这一分布
特点的重要原因。我国柳属植物主要分布在西北、东北和西南地区。西北地区是中亚分布区
的一部分; 东北地区是东北亚分布区的一部分; 它们又都有一些中欧-西伯利亚和北极-高山成
分。青藏高原与其他分布区间的联系很少，是柳属又一个重要的分布中心。作为泛北极植物
区系的典型属之一的柳属，可能起源于东南亚热带山区。 相似文献