| 摘要: |
| 通过野外调查和文献资料查阅,初步统计出江苏野生藤本植物共有35科74属153种,其中蕨类植物有1科1属1种,单子叶植物有3科4属12种,双子叶植物有31科69属140种。该区藤本植物以寡种科(属)、单种科(属)为主; 地理成分复杂,具有明显的热带亲缘性,并受温带成分的影响。生长型以木质藤本为主(56.58%),草质藤本次之,其中,共有17科全为木质藤本,如木通科(Lardizabalaceae)以及防己科(Menispermaceae); 共有13科全为草质藤本,如百部科(Stemonaceae)以及萝藦科(Asclepiadaceae)等; 共有4科含木质与草质藤本植物,如百合科(Liliaceae)以及葡萄科(Vitaceae)等。高位芽植物最多(56.58%),地面芽植物(20.39%)、一年生植物(11.19%)、地下芽植物(8.55%)及地上芽植物(3.29%)的数量依次减少。该区藤本植物攀援类型可以分为4大类,以缠绕类居多(40.13%),其他依次是卷曲类(30.26%)、搭靠类(22.37%)以及吸固类(7.24%)。有性繁育系统以两性花最多(76.97%),单性花次之(19.74%),杂性花最少(3.29%); 花序组成丰富,以无限花序占有绝对优势(71.05%)。 |
| 关键词: 野生藤本植物, 植物区系, 生活型, 有性繁育系统, 花序, 江苏 |
| DOI：10.11931/guihaia.gxzw201602008 |
| 分类号:Q948.2, Q949.9, S718.5 |
| 文章编号:1000-3142(2017)03-0356-10 |
| Fund project:国家自然科学基金(30972408); 江苏高校品牌专业建设工程项目(PPZY2015A063)[Supported by the National Natural Science Foundation of China(3097247); Jiangsu Brand Specialty in University Construction Program(PPZY2015A063)]。 |
|
| Preliminary investigation on biodiversity of wild lianas in Jiangsu |
|
XIN Jian-Pan, TIAN Ru-Nan*
|
|
College of Landscape Architecture, Nanjing Forestry University, Nanjing 210037, China
|
| Abstract: |
| There are 153 species of wild lianas, belonging to 74 genera and 35 families based on several field investigations and literature consulted on wild lianas. There is one species of fern belonging to one genus and one family,twenle species of monocotyledons belonging to four genera and three families and 140 species of dicotyledonous belonging to 69 genera and 31 families; wild lianas in Jiangsu are made primarily of depauperate family(genera)and single species family(genera). The geographical elements of wild lianas are complex, and the floristic element analysis reveals that wild lianas with tropical features is dominant and influenced by temperate components. The woody lianas occupy a certain proption(56.58%), where woody lianas belong to seventeen families, such as Lardizabalaceae and Menispermaceae, while the proption taken up by herb lianas are slightly lower, where herb lianas belong to thirteen families, such as Stemonaceae and Asclepiadaceae, and the rest of families are consisting of woody and herb, such as Liliaceae and Vitaceae. The climbing patterns of wild lianas in can be divided into four types, among which the twining account for 40.13%, and the following are curing(30.26%), hooking(22.37%)and adhering(7.24%). In the lianas sexual system, the hermaphrodites account for 76.97%, the dioecious for 19.74% and themonoecious for 3.29%. The inflorescence components are abundant, and the indefinite inflorescence is in absolutely dominant(71.05%). |
| Key words: wild lianas, flora, life form, sexual system, inflorescence, Jiangsu |
