滇中圭山地区种子植物区系研究
赵厚涛
学位类型硕士
导师税玉民
2010-01
学位授予单位中国科学院研究生院
学位专业植物学
摘要在前人工作的基础上,通过广泛的文献资料搜集、野外调查、标本采集、室内鉴定及种类统计分析等一系列工作,对滇中石林圭山地区种子植物区系的组成、性质、地位、起源与演化等方面进行了研究与探讨,主要结果如下:1、圭山地区种子植物资源丰富。目前记载有野生种子植物129科488属1069种,裸子植物3科5属6种,被子植物中双子叶植物100科381属842种,单子叶植物26科102属421种,在调查中发现新种2个。2、区系性质:在区系组成上热带性质的科有49科,占总科数(不包括世界广布科)的62.02%;温带性质的科有30科,占总科数的37.98%。热带成分的属(分布区类型2-7及其变型)有189属,占总属数(不包括世界广布属)的44.68%,温带成分的属(分布区类型8-14及其变型)有224属,占总属数的52.96%。除掉世界广布种与中国特有种之外,该地区热带性质的种有302种(分布型2-7型及其变型),占全部种数(不包括世界广布种与中国特有种)的53.83%;温带性质的种有259种(分布型8-14型及其变型),占全部种数的46.17%;热带性质的种稍占优。中国特有种有433种,占全部种数(不包括世界广布种)的43.96%。其中分布到达北方的种类很少(44种,占中国特有种的10.16%),而且多数仅分布到陕西、河南、甘肃一带,显示出本地区植物区系温带性质不强。统计分析结果显示,圭山地区种子植物区系具有古热带植物区系的渊源,而与泛北极植物区系联系也很密切,植物区系表现从热带植物区系向温带植物区系的过渡性质。3、通过区系比较确定了圭山地区的区系地位。通过与五个典型的周边地区区系进行植物区系的科、属相似性比较以及区系组成成分比较分析,发现本区与滇武定狮山的关系最为亲密,和滇中其他地区的的小百草岭地区、景东无量山种子植物区系的关系也很近,与西双版纳、河口南溪河流域的区系关系较为疏远。因此我们认为,圭山地区种子植物区应当隶属东亚植物区-中国-喜马拉雅森林植物亚区-云南高原地区的滇中高原亚地区。圭山地区种子植物区系与周围地区植物区系具有广泛的联系,是滇中高原亚地区植物区系的一个缩影。4、圭山地区种子植物区系特有现象显著,并呈现明显的石灰岩特色。圭山地区具有10个中国特有属,433个中国特有种。圭山地区特有类群有1属7种,即圭山特有属弥勒苣苔属Paraisomertrum和圭山特有种圭山秋海棠Begonia guishansis、弥勒千里光Senecio scandens、弥勒苣苔Parasiometrum mileens等。其中圭山特有属弥勒苣苔属Paraisomertrum和3个圭山特有种包括圭山秋海棠Begonia guishansis、圭山石蝴蝶Petrocosmea guishanensis等都是石灰岩专性的。
资助项目The floritistic composition, characteristics, endemism, origin and evolution were studied on the base of literature checked, field investigation, specimens checked and previous research work. The main result are as follows: 1. Guishan Region is rich in seed-plants. The Guishan Region flora consists of 129 families and 488 genera and 1069 species of which 6 species in 5 genera and 3 families belong to Gymnosperm, 842 species in 381 genera and 100 families belong to dicotyledon, 421 species in 102 genera and 26 families belong to monocotyledon.2. Flora Composition: The floristic elements of 62.02% tropical families and 37.98% temperate one indicates that the flora of this region has a close relationship with tropical flora historically and geographically. The floristic elements of 44.68% tropical genera and 52.96% temperate one reveals dominant temperate property, which one of the typical floristic characters in subtropical mountain region; the floristic elements of 53.83% tropical species(excluding species which are endemic to china and distribute world-wide ), 46.17% temperate ones indicates that the flora is subtropical in nature. 433 species are endemic to China ,43.96% of all the species (excluding the species world-wide).Very few species (44 species endemic to China accounted for 10.16%) distribute to the North, most of which distribute only to Shanxi, Henan, Gansu Province., indicating weak feature of temperate flora of Guishan region in nature. Statistical analysis showed that indicates that the flora of this region has a close relationship with tropical flora historically and geographically, shows transitional features in flora between tropical to temperate flora.. 3. By the comparison with five adjacent limestone and non-limestone flora on the level of family and genus, we found that the flora of Guishan Region is most closely related to the flora of Shishan Mountain and Xiaobaicaoling and Wuliang Mountain all of which situate in Central Yunnan. So the flora position of Guishan Region is: Central Yunnan Plaetau Subregion, the Yunnan Plaetau Region, the Sino-Himalayan forest Subkingdom, the east Asiatic Kingdom.4. The endemic plants in Guishan Region are rich, and the flora of Guishan Region shows limestone features. 10 genera are endemic to China, 433 species are endemic to China. Among the Chineses endemic plants, 1 genes and 7 species are endemic to Guishan Region in which 1 genes(Parasiometrum) and 3 species (Begonia guishanensis, Petrocosmea guishanensis, Parasiometrum mileens) are limestone exclusive.
语种中文
文献类型学位论文
条目标识符http://ir.kib.ac.cn/handle/151853/16108
专题昆明植物所硕博研究生毕业学位论文
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赵厚涛. 滇中圭山地区种子植物区系研究[D]. 中国科学院研究生院,2010.
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