| 摘要: |
| 油杉属是东亚特有属,全世界油杉属共有12种2变种,中国有10种2变种,中国是油杉属的特有中心和分布中心。在地史时期,油杉属植物曾广泛分布于北半球的欧洲、北美和东亚。油杉属的现代分布有残余的特征,种类大多产于中国西南部和中部,种类数量由西向东逐渐递减。根据生态习性与分布区气候特征,中国主要油杉属植物的生态地理分布可分为:内陆型(东部温凉型、东部温暖型、西南季风型)、沿海型和岛屿型。湘黔桂地区是油杉属的现代分布中心和分化、发展中心。从染色体资料来看,其演化趋势为:江南油杉→矩鳞油杉→黄枝油杉→台湾油杉。结合地理分布,油杉属植物可能起源于中国西南,而后向东发展。从分布区南北向看,核型不对称性为:台湾油杉>青岩油杉>铁坚油杉,南部类型比北部类型要进化。 |
| 关键词: 油杉属 生态地理分布 系统演化 |
| DOI：10.3969/j.issn.1000-3142.2012.05.010 |
| 分类号:Q948 |
| Fund project: |
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| Ecological and geographical distribution of Keteleeria and its systematic evolution in China |
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WANG Chong-Yun1*, MA Shao-Bin2, LÜ Jun2, DANG Cheng-Lin1
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1.Institute of Ecology and Geobotany, Yunnan University, Kunming 650091, China;2.School of Life Sciences, Yunnan University, Kunming 650091, China
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| Abstract: |
| Keteleeria is endemic in Eastern Asia,including 12 species and 2 variants in the world. There are 10 species and 2 variants in China,which is the endemic and diverse center. In China,most of the Keteleeria species concentrate in adjacent area among Hunan,Guizhou and Guangxi,indicating as the center for distribution and differentiation. According to their ecological adaptation and geographical distribution,the Keteleeria species in China could be divided into inland type(Cool-temperate Type,Warm-temperate Type and Southwest Monsoon Type),Sea-closed Type and Islands Type. Karyotype literatures showed that eastern species developed from western ones,as well as northern species from southern ones. Southwest China was the possible origin center of Keteleeria. Then it developed towards east and north. |
| Key words: Keteleeria ecological and geographical distribution systematic evolution |
