Geographical Distribution of Species in Genera Abies, Picea and Larix in China
Geographical Distribution of Species in Genera Abies, Picea and Larix in China
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发表时间：
2002
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通讯作者：
Piao Shi-long
中科院分区：
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作者：
Piao Shi-long
冷杉属、云杉属和落叶松属是我国寒温性针叶林的优势种。本文通过文献查阅，收集了这三个属的地植物学资料，探讨了它们的分布及其相互关系。利用地理信息系统技术，以所收集的数据为基础，建立了中国各属1°纬度× 1°经度分辨率的空间分布数据库。结果表明：（2）物种的分布高度随纬度的增加而降低，但在沿着纵向上，分布高度在95° ~ 105 *°之间出现最大值，这主要是由于青藏高原的存在，尽管这种趋势经常受到异质环境的影响。
Species in genera Abies, Picea and Larix constitute dominant components of cold-temperate coniferous forests in China. In the present study, a number of geobotanical data on these three genera were collected by literature review to explore the distribution of these genera and their interrelations. Using GIS technique and based on the data collected, we established a spatial-explicitly species distribution database for each mesh with a resolution of 1° latitude by 1° longitude for each genus in entire China. The results suggested that: (1) west Sichuan and north Yunnan were modern distribution center common to these three genera; and (2) distribution altitudes of species decreased with an increase of latitude while along a longitudinal direction the distribution elevation appeared a maximum at a longitudinal range of 95°-105*° mainly due to existence of the Qinghai-Tibet Plateau although such a trend was frequently impacted by a heterogeneous environment.