柴达木盆地东缘山地祁连圆柏林上限树木径向生长与气候要素的关系  

Relationships between Sabina przewalskii radial growth and climatic factors at upper timberlines in eastern mountainous region of Qaidam Basin

作　　者：郑永宏[1,2,3] 朱海峰[1] 张永香[2,4] 邵雪梅[1] 

机构地区：[1]中国科学院地理科学与资源研究所,北京100101 [2]中国科学院研究生院,北京100039 [3]武汉大学资源与环境科学学院,武汉430079 [4]中国科学院青藏高原研究所,北京100085

出　　处：《应用生态学报》2009年第3期507-512,共6页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(40671194);国家重点基础研究发展规划项目(2005CB422002);中国科学院地理科学与资源研究所知识创新工程项目(CXIOG-A05-12)资助

摘　　要：利用柴达木盆地东缘山地祁连圆柏林上限6个样点树轮宽度资料建立了标准年表,通过聚类分析发现,样点间树木径向生长具有不同的亲疏关系.其中,北部两个样点之间有较高的一致性,而中、南部4个样点之间有较高的一致性.气候要素对两类样点树木径向生长的影响不同.其中,北部两个样点树木径向生长与当年6月降水变化呈正相关,中、南部4个样点树木径向生长与前一年11月及当年7月温度变化呈正相关.Based on the investigation data of Sabina przewalskii tree-ring width at six sites at upper timberlines in eastern mountainous region of Qaidam Basin, the standard tree-ring chronologies of S. przewalskii were established. Cluster analysis indicated that there existed geographical differences in the radial growth of S. przewalskii among the sites. Higher similarity was observed between two northern sites, and among four central and southern sites. Climatic factors had different effects on the radial growth of S. przewalskii of the two clusters. The radial growth of S. przewalskii was positively correlated with the precipitation in current year＇ s June at northern sites, and with the air temperature in previous year＇ s November and current year＇ s July at central and southern sites.

关 键 词：柴达木盆地东缘山地 森林上限 祁连圆柏 树轮宽度 气候要素 

分 类 号：Q948[生物学—植物学]