| 滇西北地区裸子植物多样性的地理分布格局及其与区系分化之间的关系 |
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| 引用本文： | 冯建孟,朱有勇.滇西北地区裸子植物多样性的地理分布格局及其与区系分化之间的关系[J].生态环境,2010,19(4):830-835. |
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| 作者姓名： | 冯建孟 朱有勇 |
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| 作者单位： | 1. 大理学院生命科学与化学学院,云南,大理,671000
2. 云南农业大学农业生物多样性应用技术国家工程研究中心,云南,昆明,650201;农业生物多样性和病虫害控制教育部重点实验室,云南,昆明650201 |
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| 基金项目： | 国家重点基础研究发展规划(973计划) |
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| 摘 要： | 研究利用大尺度的物种分布信息,探讨了长江上游滇西北地区裸子植物多样性的地理分布格局及其与区系分化之间的关系。结果表明,在属和种的水平上,裸子植物的多样性从南到北呈递增趋势,但在科的水平上无明显变化趋势。在科和属的水平上,裸子植物的区系分化强度随着纬度的升高呈递增趋势。较高的裸子植物多样性和区系分化强度主要出现在北部地区。区系分化强度与表征地形复杂度的单位面积海拔高差之间存在显著的相关性。区系分化强度明显影响研究区域内裸子植物多样性的地理分布格局,这可能与地质历史上滇西北地区地层的差异性抬升和地形格局有关。
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| 关 键 词： | 多样性 地理分布格局 区系分化 裸子植物 滇西北地区 |
Geographical patterns of diversity of Gymnosperms in northwest Yunnan and their correlation with flora differentiation |
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| FENG Jianmeng,ZHU Youyong.Geographical patterns of diversity of Gymnosperms in northwest Yunnan and their correlation with flora differentiation[J].Ecology and Environmnet,2010,19(4):830-835. |
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| Authors: | FENG Jianmeng ZHU Youyong |
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| Institution: | FENG Jianmeng 1,ZHU Youyong 2,3 1.Department of Life Science , Chemistry,Dali University,Dali 671000,China,2.The National Center for Agricultural Biodiversity in Yunnan Agricultural University,Kunming 650201,3.Ministry of Education Key Laboratory of Agricultural Biodiversity for Plant Disease Management |
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| Abstract: | In this paper,geographical patterns of diversity of Gymnosperms in Northwest Yunnan and their correlation with flora differentiation were investigated based on flora data-sets in large scale.The results showed that richness at the levels of species and genera increased with the increase of latitude,but no obvious trend was observed at the level of families.Increasing trends of flora differentiation of genera and families were observed on the latitude gradient.The higher richness and stronger flora different... |
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| Keywords: | Diversity geographical patterns flora differentiation Gymnosperms Northwest Yunnan |
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