瓦屋山国家森林公园蕨类植物区系分析

在野外调查和分类的基础上,对瓦屋山国家森林公园蕨类植物进行了初步的区系分析。现已知该地区共有蕨类植物36科,71属,156种,以热带成分为主,温带成分次之。蕨类植物的区系分析表明：(1)物种多样性丰富。科、属、种分别占四川的69．2％、55．5％和21．4％;(2)物种具有古老性和特有性。残遗植物以及中国,四川特有种多;(3)物种具有过渡性。     

福建清源山药用蕨类植物资源与分布

福建清源山药用蕨类植物有15科21属26种;对其分布及利用价值作了阐述,并进一步对开发利用药用蕨类植物资源提出建议。     

帽儿山蕨类植物种群生态的研究

在深入调查研究的基础上, 首次报道了帽儿山地区的蕨类植物资源, 共计13 个科、23 个属和40 多个种, 根据各种群在生态上的不同要求, 以表格的形式说明了主要蕨类种群对"湿度"和"光照"因子的适应关系。本文还着重指出了各种群的生物学特性和生态环境的一致性, 并详细讨论了蕨类种群在山体中的适生生境。     

Scaling of Frond Form in Hawaiian Tree Fern Cibotium glaucum: Compliance with Global Trends and Application for Field Estimation

Large‐fronded tree ferns are critical components of many tropical forests. We investigated frond and whole‐plant allometries for Hawaiian keystone species Cibotium glaucum, for prediction and to compare with global scaling relationships. We found that C. glaucum fronds maintain geometric proportionality across a wide range of plant and frond sizes. These relationships result in strong allometries that permit rapid field estimation of frond size from simple linear dimensions. C. glaucum frond allometries complied with intra‐ and interspecific global trends for leaf area versus mass established for much smaller‐leafed species, indicating ‘diminishing returns’ in photosynthetic area per investment in mass for larger fronds. The intraspecific trend was related to declining water content in larger fronds, but not to a significantly larger investment in stipe or rachis relative to lamina. However, C. glaucum complied with the global interspecific trends for greater allocation to support structures in larger leaves. Allometries for frond number and size versus plant height showed that as plants increase in height, frond production and/or retention progressively declines, and the increases of leaf size tend to level off. These frond and whole plant‐level relationships indicate the potential for estimating frond area and mass at landscape scale to enrich studies of forest dynamics.     

Airborne pollen of entomophilous plants and spores of pteridophytes in Rzeszów and its environs (SE Poland)

Airborne pollen of entomophilous plants occurred in low or very low concentrations, and constituted 4 of the total pollen sum. In 1997–2002, between 18 and 26 taxa were identified. Out of this large group the following taxa were represented in larger concentrations every year– Salix, Acer, Morus, Cichorioideae, Asterioideae, Plantago major/media, Sambucus nigra and Tilia. Microscopic examination revealed that pollen grains of the above mentioned species were often glued together, which is a typical adaptation to this kind of pollination. Club moss (Lycopodium spp.) and horsetail (Equisetum spp.) spores were recorded sporadically. Fern spores were found frequently but in very low numbers. In 2002 the occurrence of the airborne pollen of entomophilous plants in the city and in the countryside was compared. A higher percentage value of pollen was found in the atmosphere of the city rather than in the countryside, due to the high concentration of Acer pollen, which is a partly entomophilous species and common in municipal plantings. In the countryside air there was a higher concentration of pollen from purely entomophilous species, such as Viburnum and Asteroideae.     

重庆地区蕨类植物区系的初步研究

对重庆地区蕨类植物从科、属分布区类型进行了统计分析,同时将该区区系特征与其它几个地区进行了对比分析。结果表明:(1)该区共有蕨类植物389种(含变种和变型),隶属于109属, 43科。(2)该区蕨类植物中优势科、属十分明显,其中优势科为:鳞毛蕨科、金星蕨科、水龙骨科、蹄盖蕨科、凤尾蕨科;优势属为鳞毛蕨属、耳蕨属、凤尾蕨属、铁角蕨属、卷柏属、凤丫蕨属。(3)从蕨类植物科、属分布区类型的所占比例来看,该地区区系性质以热带成分占优势,其中热带分布科22科,占总科数的75.00%;热带分布属有60属,占总属数的64.52%(剔除世界分布)。(4)本区区系成分古老,古老孑遗的科属较为丰富,但特有现象不明显。(5)该区地形、气候条件对于蕨类植物的散布和充分发育比较适宜,为其在该区的充分发育创造了极为有力的条件。(6)经对比分析和聚类分析表明:该区与临近的几个地区属的相似性系数很高,特别是与西南地区的西藏、横断山区的属相似性系数较大,表明区系上与这些地区有着广泛的联系;而与华北的内蒙古,东北的辽宁等相距较远的地区属的相似性系数较低,表明区系上联系较为疏远。     

广西十万大山蕨类植物区系特征及垂直分布的数量研究

十万大山植物区系位于北回归线以南,蕨类植物非常丰富,现已发现５２仲、１１３属、２６４种。区系地理成分复杂多样,属可以划分１１种类型（变型）,可种可以划分为１４种类型（变型）。本区系具有明显的热带亲缘,热带分布属占８１．４２％,热带分布种占６６．７７％。亚洲热带分布及其变型占有较大的比例,表明本区系与亚洲热带植物区系特别是中南半岛区系有密切的亲缘关系。区系地理成分有明显的垂直分布规律,聚类分析的结果     

大巴山(狭义)蕨类植物区系研究

于1990~2005年对大巴山进行了野外考察,并对所采集的蕨类植物标本进行鉴定及资料统计分析.结果表明,大巴山具有蕨类植物34科76属247种(包含变种和变型).鳞毛蕨科、水龙骨科和蹄盖蕨科为大巴山蕨类植物区系中占优势的3大科,共有113种,占总种数的45.75%.属的地理成分以热带、亚热带类型为主,约占总属数的65.62%,温带类型占34.38%.在种的水平上,热带、亚热带成分仅占总种数的10.29%,温带成分处于优势地位,为89.71%.在温带成分中,东亚成分与中国特有成分显著,共占总种数的84.36%,表明大巴山应属于中国-日本蕨类植物亚区.     

金佛山自然保护区蕨类植物资源与区系初步研究

金佛山自然保护区共计有野生蕨类植物46科107属458种(含亚种和变种)。在科的区系成分中单种科14个,少型科(2~5种)16个,多种科(包含6~19种)12个,大科(20~49种)1个,特大科(50种以上)3个,分别占金佛山蕨类植物总科数的30.43%、34.78%、26.09%、2.17%和6.53%;其中热带分布占总科数的54.35%;在属的区系成分中,具12个分布区类型,单种属和少种属数量多;热带成分丰富,包含55属,占总属数的51.40%;特有现象明显,地方特有种十分丰富;属的区系与武陵山和大巴山关系最为密切,与九华山、化龙山、齐云山和云山关系疏远;东亚分布、世界广布、热带亚洲至热带非洲间断分布及北温带分布型对该区系性质的影响最大,热带亚洲分布型和东亚北美间断分布型的影响最小;该区系具有古老、孑遗和原始性等特点,验证了金佛山地区处于我国三大特有现象中心之一的鄂西—川东特有现象中心的观点。     

陕西蕨类植物新记录

报道了陕西分布新记录的11种蕨类植物,即峨眉盾蕨（Neolepisorus emeiensis）、边缘鳞盖蕨（Microlepia marginata）、肾羽铁角蕨（Asplenium humistratum）、城口铁角蕨（A. chengkouense）、蚀盖耳蕨（Polystichum erosum）、伴藓耳蕨（P. muscicola）、尾叶耳蕨（P. thomsonii）、尖齿耳蕨（P. acutidens）、康定耳蕨（P. kangdingense）、石韦（Pyrrosia lingua）和绒紫萁（Osmunda claytoniana）,凭证标本均保存于西北农林科技大学植物标本馆（原西北植物研究所标本馆）（WUK）。至此,陕西现有蕨类植物已有258种（不包括变种和变型）。