云南罗平多依河景区苔藓植物区系研究

为了解云南罗平多依河景区的苔藓植物多样性和区系特征,对该区苔藓植物进行了调查,并对其区系地理成分进行了统计分析。结果表明,该区有苔藓植物34科59属116种(含变种和亚种),其优势科、属均反映了该苔藓区系以温带成分为主,并有部分热带亚热带成分。苔藓区系的地理成分复杂,以北温带分布型(27.03%)、热带亚洲分布型(25.23%)、东亚分布型(19.82%)和中国特有分布型(10.81%)占优势;以热带成分、北方温带成分和东亚成分为主导,分别占34.23%、35.14%和30.63%;反映了该苔藓植物区系温热并存且具有较高特有性的特征。与邻近13个地区的苔藓区系进行对比分析,多依河苔藓植物区系的物种丰富度较高(排第8位),与贵阳香纸沟的亲缘关系最近,这与两地相近的地理位置、海拔高度,以及相同的喀斯特河谷环境是分不开的。     

贵州红水河谷地区苔藓植物区系研究

对贵州红水河谷地区的500余号苔藓植物标本进行了调查、采集和分类鉴定,得到苔藓植物36科,78属,204种(包括8亚种4变种和1变型)。其中藓类植物23科60属163种,苔类植物13科18属41种。为贵州增加新记录5种。划为13种类型。其中具热带性质的区系成分最丰富,占总数的38.02%,构成该区苔藓植物区系成分的主体;具温带性质的成分占总数的33.85%;东亚成分、特有成分、东亚-北美成分占该区的1.56%。选择9个地区,通过属和种的相似性系数全面比较,表明该地区与同纬度茂兰自然保护苔藓植物的相似性最高,关系最密切;与低纬度鼎湖山的相似性较高,关系较近;与高纬度小五台山和长白山相似性最低,关系最远。还统计了各地区的植物区系谱,分析该地区与其它地区的藓类植物区系关系。并着重就该区的热带边缘性的特点进行了讨论。     

陕西天华山自然保护区苔藓植物区系研究

根据调查和参考有关文献,对陕西天华山自然保护区苔藓植物区系进行了初步分析,结果表明：种类丰富,本区共有苔藓植物46科95属180种（包括种下类群）。其中苔类植物14科18属37种。藓类植物32科77属143种;优势科为青藓科、提灯藓科、丛藓科、羽藓科、真藓科、绢藓科和灰藓科,优势属为提灯藓属、真藓属、青藓属、光萼苔属、绢藓属、灰藓属、凤尾藓属、丛本藓属、缩叶藓属、羽藓属和仙鹤藓属;地理成分复杂、多样。区系联系广泛;种的地理成分统计分析表明。温带成分占绝对优势。热带成分也占有一定比例,反映了本区苔藓植物区系的热带亲缘性;东亚成分也占有重要地位,有42种,其中中国-日本分布有15种;中国特有种有16种,中国特有分布中以西南区系成分为主。本区苔藓植物区系隶属于华中地区,但兼有多种成分。体现本区苔藓植物区系的南北过渡特征。     

滇川干热河谷种子植物区系成分研究

论及滇川干热河谷种子植物区系成分由科级到种级的研究结果。用于统计分析的植物共1707个种,分属于752个属,165个科．科级区系成分中,除广布科外,明显为主,其次为暖温带科和热带科,热带科有27个科,远比干暖河谷区系中的热带科多。属区系成分中,热带属占明显多数,有523个属,占75．03％,温带属158个,占22．67％,有个中国特有属。种级区系成分中,有中国特有种622个,占37．42％,热带种791个,占47．59％,温带种249个,占14．88％。干热河谷的植物区系标志种很丰富,有437种,分三个等级,其中一级为本河谷特有种,有45种,二级199种,三级193种。热带科、属、种偏多说明本河谷历史上以热带区系为主和近代区系源于热带。干热河谷的特有区系成分和区系的标志种均较好地反映本河谷区系成分组合特征、演化的近代趋势、区系的多样性及其独特性。     

广东裸子植物区系的特点

广东省裸子植物共有８科１８属３４种,分别占中国同类的８０．０％,５２．９％和１７．６％。其中泛热带分布２属,热带亚洲至热带大洋洲１属,热带亚洲１属,北温带５属,东亚和北美间断分布１属,东亚分布３属,中国特有分布５属,即热带成分共仅４属占２２．２％,而亚热带至温带成分１４属占７７．８％为绝对优势。分析表明：广东裸子植物区系体现了东亚裸子植物区系的特点,其原始中心和现代分布中心都在中国亚热带。同时论文还将广东裸子植物种的分布区类型划分为２０个亚型。     

湖南小溪自然保护区树附生苔藓植物研究

采用水平拉线法调查了小溪国家级自然保护区中树附生苔藓植物的种类,并对其进行了地理成分的分析.研究结果表明:该地区附生苔藓植物共18科26属共43种,其中苔类植物6科6属6种,藓类植物12科20属37种;树附生苔藓植物区系成分以东亚成分为主,其次为热带亚洲成分,再次为旧世界温带成分及温带亚洲成分.     

云南哀牢山地区种子植物区系研究

依据采集的4 000余份标本及馆藏标本的整理和鉴定,云南哀牢山地区有野生种子植物199科945属2 238种215变种(亚种).植物种类十分丰富,是云南植物多样性最为丰富的地区之一.种子植物区系总体上是亚热带性质,其热带科占70.47%,热带属占63.89%,热带成分虽多于温带成份,但相当数量温带成分的存在反映了该区系具有从热带向温带的过渡性质.该植物区系缺少典型热带成分,但具有不少东亚特征科属.因此,该植物区系在区划上仍属于东亚区中国-喜马拉雅植物亚区,云南高原地区,属于东亚植物区系的一部分.     

中条山木本植物区系地理成分分析

中条山位于山西省南部,有木本植物478种,隶属于73科164属。其中裸子植物5科10属18种;单子叶植物2科2属6种;双子叶植物66科152属454种。分析结果表明,科、属、种的区系地理成分复杂多样,科的分布区类型以热带-亚热带-温带分布占优势,其次是温带分布;属的分布区类型以温带成分占优势,其中北温带分布型所占百分数最高,反映出该区系的温带性质;种的分布区类型中国特有分布的种数最多,其次是东亚分布、温带亚洲分布。该区系木本植物的起源具有古老性,区系地理成分的渗透性、交汇性和过渡性较明显。中条山是华北木本植物区系中珍稀濒危植物较为集中的地区,有国家级重点保护植物15种。     

诸广山地区石松类和蕨类植物资源及区系研究

通过多次野外调查及资料整理,对诸广山地区石松类和蕨类植物的资源组成、地理成分、生态环境等方面进行了分析研究。结果显示:(1)诸广山地区共有石松类和蕨类植物37科、87属、249种,优势科为鳞毛蕨科、水龙骨科、金星蕨科、蹄盖蕨科、凤尾蕨科,优势属为鳞毛蕨属、凤尾蕨属、复叶耳蕨属、卷柏属,单种科有12个,单种属有39个,这些丰富度高的蕨类中既有古老孑遗种又有新生代年轻种,反映了该区蕨类植物的古老性与延续性。(2)从分布区类型来看,该区石松类和蕨类植物区系中以热带性质的科和属占绝对优势,分别占除世界分布类型外总科、属数的89. 3%和77. 6%,以泛热带分布类型为主。但种的地理成分复杂,温带成分略显优势,占50. 6%,以东亚分布类型为主,中国特有分布种占23. 3%;热带成分的种占26. 1%,以热带亚洲分布类型为主。表明该蕨类植物区系具有热带亲缘性,是明显的热带向温带过渡地段。(3)该区以土生蕨类群落类型为主,树生蕨类与石生蕨类随海拔升高而增多,物种丰富度在800-1 500 m处最高。     

云南昭通北部地区种子植物区系

基于2006年实地采集的4500余号标本,从科、属、种水平对昭通北部地区种子植物区系特征和性质进行了分析.结果表明:(1)该地区种子植物种类丰富,成分复杂,有159科640属1864种.(2)种子植物区系表现出明显的温带性质.北温带分布属127属,泛热带分布属99属,东亚分布属93属,热带亚洲分布属54属,4种类型共占总属数的60,94%,是该区种子植物区系主要来源.(3)该区植物区系较之滇中高原的小百草岭更近于华中植物区系的梵净山,应隶属于中国-日本植物亚区之华中区系,而与云南的大部分地区明显不同.(4)该区有中国特有科1科珙桐科,东亚特有科10科、中国特有属27属、中国特有种1063种,特有种的比例高达57%.丰富的特有成分,表明该区植物区系的古老性和独特性.该区植物区系具有深刻的热带亚洲的历史背景,而现代植物区系总体上已经是东亚植物区系中的华中植物区系性质.     

Bryoflora Characteristics of Shibing Karst World Natural Heritage Nominated Property in Guizhou*

Shibing karst World Natural Heritage nominated property is rich in bryophytes because of its superior geography, huge elevation difference, high heterogeneity in habitats, and little human disturbance. A total of 286 species of bryophytes (including subspecies and varieties) in 128 genera, 50 families were found. There were 43 species of Hepaticae in 23 genera, 17 families and 243 species of Musci in 105 genera, 33 families. Both the dominant families and genera suggest that the bryoflora of Shibing karst area is transitional between temperate zone and tropic. The phytogeographical elements were dominated by northern temperate elements (3712%), tropical elements (3182%) and eastern Asia elements (3030%), while area pattern of endemic to China occupied 1212%. Therefore, the bryoflora of Shibing karst area is of the nature of both the temperate and tropical elements, and possessed strong eastern Asia colour and relatively high endemism. The results of comparison with other five sites show that the species abundance of Shibing karst area was higher and its bryoflora was most similar to Xiangzhigou, Malinghe and Luoping karst areas in Yunnan Guizhou Bryological Region.     

江西九岭山国家自然保护区苔藓植物区系研究北大核心CSCD

九岭山国家级自然保护区南连罗霄山脉,东、北、西三面与武夷山脉、大别山脉、武陵山脉隔水相望。笔者于2020年9至12月间,对九岭山国家级自然保护区苔藓植物进行了野外调查及标本采集,共采集标本562号,对保护区苔藓植物标本进行鉴定及统计,分析研究区苔藓植物区系地理特征,并与江西7个地区苔藓植物的相似性和热带性质/温带性质(R/T)值进行了比较。结果表明:(1)九岭山国家级自然保护区共有苔藓植物58科100属179种(变种、亚种和变型),其中藓类植物34科64属113种,苔类植物23科34属64种,角苔类植物1科2属2种。(2)九岭山苔藓植物区系成分复杂,区系成分以东亚分布最高;温带成分略高于热带成分,该区表现出明显的过渡性。(3)九岭山苔藓植物与大部分地区科、属的相似性都较高;九岭山与阳际峰种的相似性最高,而与鄱阳湖湿地种的相似性最低。(4)九连山自然保护区苔藓植物R/T值最高为1.32,鄱阳湖湿地R/T值最低为0.50;九岭山国家级自然保护区与铜钹山自然保护区的R/T值最接近,且都是温带性质略高于热带性质,具有明显过渡性。总体来看,江西从南到北热带成分逐步减少,温带成分不断增加,中部呈现出明显的过渡性。     

Study on the Bryoflora in Yunmeng Mountain,south Hebei Province,China

Mountain Yunmeng(37°20'N,113°54'E)is 1520m above sea level and part of the Taihang Mountains.With a temperate continental monsoon climate,the mountain area belongs to the warm temperate deciduous broad-leaved forest region.This thesis was mostly based on the study of more than 2000 packages of bryophytes which were mainly collected by the authors in Mt.Yunmeng.Hebei Province.Of these specimens,there are 36 families,99 genera,and 244 species(including 17 varieties,5 formes,and 1 subspecies)which have been studied and identified.Moreover,it could be seen that Mt.Yunmeng has a diverse population of bryophytes.The bryoflora could be divided into 10 geographical elements:north temperate element make up the majority,accounting for 52.11% of the entire known bryoflora,and another belongs to the East Asian element,accounting for 19.25%.All temperate elements,not including 14 endemic to China and 31 Cosmopolitans,were added up to 188 species,which took 88.3% of all the entire known bryoflora in Mt.Yunmeng.However,there were only 11 Subtropical and Tropical elements.To all appearances,the bryoflora of Mt.Yunmeng showed obvious temperate characteristics.The authors conclude that the bryoflora in Mt.Yunmeng belongs to the middle type,between the warm and dry northern mountain area and the warm and damp southern mountain area.The microclimatic environment greatly influences the bryoflora.     

冀南云梦山苔藓植物区系

河北南部云梦山区苔藓植物种类较为丰富,有244种,隶属36科99属。区系成分以北温带成分为主(52.11%),其次是东亚成分(19.25%),具有明显的温带性质。提出该区系组成属于温暖干旱的北方山地和温暖潮湿的南方山地的中间类型,个别区域小气候环境条件对苔藓植物区系组成具有重要意义的观点。文中对成因进行了初步探讨。     

Study on the bryoflora in Yunmeng Mountain, south Hebei Province, China

Mountain Yunmeng (37°20′N, 113°54′E) is 1 520m above sea level and part of the Taihang Mountains. With a temperate continental monsoon climate, the mountain area belongs to the warm temperate deciduous broad-leaved forest region. This thesis was mostly based on the study of more than 2 000 packages of bryophytes which were mainly collected by the authors in Mt. Yunmeng, Hebei Province. Of these specimens, there are 36 families, 99 genera, and 244 species (including 17 varieties, 5 formes, and 1 subspecies) which have been studied and identified. Moreover, it could be seen that Mt. Yunmeng has a diverse population of bryophytes. The bryoflora could be divided into 10 geographical elements: north temperate element make up the majority, accounting for 52.11% of the entire known bryoflora, and another belongs to the East Asian element, accounting for 19.25%. All temperate elements, not including 14 endemic to China and 31 Cosmopolitans, were added up to 188 species, which took 88.3% of all the entire known bryoflora in Mt. Yunmeng. However, there were only 11 Subtropical and Tropical elements. To all appearances, the bryoflora of Mt. Yunmeng showed obvious temperate characteristics. The authors conclude that the bryoflora in Mt. Yunmeng belongs to the middle type, between the warm and dry northern mountain area and the warm and damp southern mountain area. The microclimatic environment greatly influences the bryoflora. __________ Translated from Guihaia, 2005, 25 (3) [译自: 广西植物, 2005,25(3)]     

Relationships Between the Bryoflora of Mt. Wuyi,SE China,and Those of Neighbouring Mountain Regions

Mt. Wuyi, located at 27°37‛-27°54‛ N, 117°27‛-117°51‛ E, is the highest mountain in South-East China. Its main peak, Huanggangshan, is 2158 m above the sea level. In 1955, P. C. Chen organized the first expedition to Mt. Wuyi, and the authors investigated the different ravines and the forests of that area in 1976 and from 1979 to 1984 respectively. Up to now 355 species of the bryophytes have been found in Mt. Wuyi. I. The influence of the factors of geological history on the bryoflora of Mt. Wuyi Fujian Province, belonging to Cathaysian, one of three Chinese ancient lands, was a part of ocean until the end of the lower Tertiary. In the early Devonian, Fujian uplifted above the sea level, but it submerged in the sea later, and then uplifted above the sea level again in the upper Triassic. By the end of the lower Triassic the Himalayan movement influenced the paleogeography of China deeply, and the eastern and central mountains of Fujian uplifted again. In the Tertiary, Fujian was influenced by the hot maritime weather, so the tropical evergreen forests existed in southern Fujian at that time. The conclusion was made by Z. B. Zhao in 1983 after his long period of study on geological history of Fujian Province since the Yanshan movement. According to the morden geographical distribution of Chinese bryophytes, it seems that the above influence might be related to the bryophytes of Mt. Wuyi and also the southern part of Zhejian Province. By the end of the Tertiary the weather became cold in most parts of China. Since then the cold weather and hot weather alternated several times. One kind of the endemic elements of the bryoflora formed in the area from the south-eastern coast of China to the southeastern Xizang (Tibet), including Japan. They are not specialized at the family level or closely related to each other, but they have similar distribution and belong to different families. In the Quaternary, Mt. Wuyi gradually uplifted following the Himalayan movement. As the weather cooled down in the upper part of the mountain, deciduous broad-leaved and needleleaved trees increased there. Meanwhile, temperate genera and species of the bryophytes spread and invaded South China and entered Mr. Wuyi. Rhytidiadelphus and Hvlocomium probably began to grow in Mt. Wuyi at that time, and their distribution is quite different from their primary one. On the other hand, a part of tropical and subtropical bryophytes might enjoy the changed weather and environment in the Quaternary and existed in a few small localities of Mt. Wuyi, and the genera Haplomitrium, Endotrichella and Floribundaria are probably their representatives. From the point of view of geological history we are now living in the interglacial period and the present natural conditions will last continuously, so they will steadily influence the bryoflora of Mt. Wuyi in a long period of time. 2. Essential characteristics of the bryoflora in Mt. Wuyi Due to the geographical position and the other factors of Mt. Wuyi the bryoflora is represented by numerous tropical and subtropical elements (34.1%), but the East-Asiatic endemic ones (79.2%) are characteristic of the bryoflora in Mt. Wuyi (Tab. 1). The tropical and subtropical families of the bryophytes, found south of Changjiang (Yangtzi) River, are Haplomitriaceae (1 genus, 3 species), Porellaceae (2 genera, 8 species), Frullaniaceae (2 genera, 10 species), Lejeun eaceae (21 genera, 35 species), Trachypodaceae (3 genera, 4 species), Meteoriaceae (10 genera, 17 species), Neckeraceae (5 genera, 8 species) and Hookeriaceae (3 genera, 3 species). The above 8 families, including 46 genera and 85 species, represent about 1/4 genera (24.3%) and less than 1/4 species (23.9%) of the bryoflora of Mt. Wuyi. Most species of East-Asiatic elements show very close relationships with Japan, and are widely distributed from the low altitude of Mt. Wuyi to the summit of Mt. Huanggangshan. However, the Holarctic species (26.8%) are also important elements of the bryoflora in Mt. Wuyi, showing its transition nature, although it is located in the subtropics. Moreover, the in fluence of the Himalayas also exists in Mt. Wuyi, and the Himalayan elements cover 14.4% in the bryoflora of Mt. Wuyi. The similarity coefficients between the bryofloras of Central and South America, Africa and Oceania and that of Mt. Wuyi are from 5.0-9.2% respectively. The endemic species are not very many and cosmopolitan species are only 7 there. In 1958, P. C. Chen designated Mt. Wuyi as “the transition region of South and North China rich in East-Asiatic genera and species”. His very important conclusion is essentially in accordance with the fact of the bryoflora on Mt. Wuyi. Recently, some of the new records fur ther show the characteristics of the bryoflora in Wuyi. Two facts are worth being mentioned. One is that East-Asiatic genera are only five in Mt. Wuyi. However, there are 9 East-Asiatic genera in Mt. Huangshan more than in Mt. Wuyi; 4 East-Asiatic genera are recorded in Mt. Shennongjia. The other is that epiphyllous liverworts in Mt. Wuyi, consisting of 7 families, 21 genera and 36 species, are less than on Hainan Island and Xishuangbannan, located in the tro pics in China. 3. Comparison between the bryoflora of Mt. Wuyi and those of the neighbouring regions As China covers a very large area, bryofloristic elements are quite different in the diffe rent regions. In this section, we are concentrated on making a comparison between the bryof loras of Mt. Wuyi and the regions belonging to the Central China of the bryoflora named by P. C. Chen. Huaping Forest Region, Guangxi Zhuang Autonomous Region in South China, with both latitute and altitude very similar to Mt. Wuyi, is included in this comparison (Fig. 1). According to the rough estimation, the similarity coefficient of moss genera between Mt. Wuyi and Huaping is 56.3%, and those between the mountain and southern Zhejian and Mt. Huangshan, Anhui, are 62.7% and 51.6% respectively, while the similarity coefficient of the genera of the mossfloras between Mt. Shennongjia and Mt. Wuyi is 46.8%. Table 2 shows the statistics of mosses in Mt. Wuyi and the others, but the bryoflora of Huaping needs further study However, it is very interesting to note that Haplomitrium and Pleurozia of liverworts are both found in Mt. Wuyi and Huaping Forest Region, and the similarity coefficient between the mossfloras of Mt. Wuyi and Zhejian Province is also higher than those mentioned above. Tropical and subtropical elements reduce towards the north in China, and temperate ones increase. Huaping is located in the south, and, as expected, some tropical and subtropical genera such as Hookeriopsis and Symphyodon have been found there, but not in Mt. Wuyi; several temperate genera, such as Schwetschkeopsis and Fauriella, have been recorded in Mt. Huangshan, but not in Mt. Wuyi. For some unknown reasons, Octoblepharum and Neckeropsis are only found in southern Zhejiang, but not in Mt. Wuyi. Mt. Shennongjia, with its main peak over 1000 m higher than that of Mt. Wuyi, is located in its northwest, and more than ten temperate genera, such as, Ceratodon, Aulacomnium Myurella, Bryonoguchia and Abietinella have been found there. Generally, Mt. Wuyi belongs to the central subtropical region of China, and East-Asiatic endemic genera are the main elements of its bryoflora, but the bryoflora also consists of tropical and subtropical elements with some temperate ones. 4. East-Asiatic endemic genera in the bryoflora of Mt. Wuyi In the bryoflora of Mt. Wuyi, one of the main elements, East-Asiatic endemic genera, should not be neglected (Tab. 4). East-Asiatic endemic genera in Mt. Wuyi (five) are less than in Mt. Huangshan and Mt. West Tianmu, although the positions of the latter two are very close to Mt. Wuyi. East-Asiatic endemic genera of liverworts are Trichocolea and Macvicaria so far found in Mt. Wuyi, and the mosses are Myuriopsis, Meteoriella, Pseudospiridentopsis (Fig. 1). Myuriopsis is only distributed in Taiwan Province and Mt. Wuyi, and the other four are distributed in Mt. Huangshan or Mt. West Tianmu, and also in Taiwan, besides in Mt. Wuyi. About thirty EastAsiatic endemic genera have so far been known in China, which means that about one sixth of East- Asiatic endemic genera of the bryophytes occur in Mt. Wuyi. We may notice that nine and seven East-Asiatic endemic genera of the bryophytes have been recorded in Mt. Huangshan and Mt. West Tianmu respectively. In Mt. Shennongjia, Central China, there are four East Asiatic endemic genera, but only two have been found in the Huaping Forest Region, South China. In Mt. Dinghua, located south of Mt. Wuyi, on East-Asiatic endemic genus of the bryophytes has so far been found. East-Asiatic endemic genera of the bryophytes are mainly limited to China, Korea and Japan, including the East Himalayas, rarely occur in South Asia, Siberia of the Soviet Union. Therefore, these genera enjoy a warm and moist environment. In Mt. Wuyi, all the East-Asiatic endemic genera are monotypic ones with a disjunct distribution. Now in Taiwan Province five of six recorded East-Asiatic endemic genera are common to Mt. Wuyi. In Japan, about eleven, i.e. one third of, East Asiatic endemic genera so far found are common to China, which shows a long history of the phytogeographical relationships between Japan and China. East Asiatic endemic genera of the bryophytes might therefore exist on islands of Taiwan Province and Japan before they were separated from the mainland of Asia. However the fossil evidence is still lacking in the bryophytes, so we are not able to discuss about the distribution area and the distribution center of the East-Asiatic bryoflora in detail. The above estimation is more or less related to geological history, and we assume that the East-Asiatic endemic genera have existed at least since the end of the Tertiary. Starting from the Quaternary, the climatic change during glacial epoch has been possibly the most important factor affecting the bryoflora in Asia, and the upheaval of the Himalayas has stimulated the diversity and the specialization of the bryophy tes. Considering these factors, East-Asiatic endemic genera might be the “Tertiary fossil plants”. Another problem is difficult to explain, because Mts. Huangshan, West Tianmu and Shen nongjia were once influenced by glaciation directly, although Chinese geologists hold different views. However, no evidence of glaciation has been found in Mt. Wuyi. It is worth to study the close relationships between Mt. Wuyi, Mt. Huangshan and Mt. West Tianmu, where is the distri bution center of the East-Asiatic endemic genera. The above three mountain regions share half of the East-Asiatic endemic genera, and about 32% genera of the others are found in two of them (Fig. 2). Myuriopsis, one of the East Asiatic types, was only recorded in Taiwan Pro vince, Japan and Korea. Neodolichomitra, occuring in Taiwan Province, is endemic to China. More or less the differentiation has taken place in Mt. Huangshan, Mt. West Tianmu and Mt. Wuyi. The number of the East-Asiatic endemic genera is smaller in Mt. Wuyi, so it is possibly located on the border of the distributional center of the East-Asiatic endemic genera. Moreo ver, three of four East-Asiatic endemic genera in Mt. Shennongjia are also found in Mt. Huang shan and Mt. West Tianmu, but the other East-Asiatic genus in Mt. Wuyi is common to the mountain areas in SW China, the Qinglin Range of NW China, and the isolated mountain areas of NE China. Considering all the characteristics of the bryoflora of Mt. Shennongjia, we assume that Mt. Shennongjia may belong to another distribution center, including SW part of Sichuan Province, and the other neighbouring mountains.     

英格兰洞穴苔藓植物区系特征及其岩溶沉积研究

根据作者1998－2000年采自英格兰7个岩溶洞穴452份苔藓植物标本研究,英格兰岩溶洞穴苔藓植物区系具有下列特征：（1）区系种类由20科41属65种（含变种亚种）组成;（2）区系地理成分含北温带分布（52．30％）、温带欧洲分布（15．38％）、欧洲－亚洲分布（1．54％）、欧洲－北美分布（12．31％）、旧世界温带分布（4．62％）、英国特有（1．54％）和世界广泛分布（12．31％）等7种成分;（3）生活型含高丛集型（9．22％）、矮丛集型（20％）、交织型（61．54％）、扇型（4．08％）和平铺型（4．08％）5种类型。14种洞穴苔藓植物参与了洞穴洞口钙华沉积,沉积形态包括钟乳石、洞壁钙华、洞底泉华和洞底滴水钙华4种类型。     

贵州乌江东风水库库区消落带苔藓植物区系分析

采用典型调查与路线调查相结合的方法,对贵州乌江东风水库库区消落带苔藓植物区系的物种组成、生活型、分布区类型和丰富性进行了调查和分析.结果表明:该区域共有苔藓植物18科58属101种,其中,藓类植物有16科56属99种,苔类植物有2科2属2种;优势科为灰藓科(Hypnaceae)、青藓科(Brachytheciaceae)和丛藓科(Pottiaceae),优势属为青藓属(Brahchythecium B.S.G.)、真藓属(Bryum Hedw.)和小曲尾藓属〔Dicranella(Müll.Hal.)Schimp.〕;单属科和单种属所占比例均较高,分别占该区域苔藓植物总科数和总属数的500%和638%.该区域分布的苔藓植物生活型可分为交织型、丛集型、垫状和平铺型4类,以丛集型种数最多(48种),占该区域苔藓植物总种数的475%.该区域分布的苔藓植物可划分为12个分布区类型,其中,温带成分种类最多,所占比例为815%;热带成分所占比例仅为185%;中国特有种所占比例也较高,为207%.该区域苔藓植物的丰富性综合系数(Si)为-03608,低于相邻的六冲河下游流域.综合分析结果表明:该区域的苔藓植物多样性较为丰富,多数种类具有较强的抗逆性,且丛集型苔藓种类最多,与库区消落带的特殊生境相适应;地理成分以东亚成分和北温带成分为主,总体属温带性质,且中国特有种较多,反映出该区域苔藓植物区系的特殊性和复杂性.