西藏是核桃原产地之一

摘要

Judglans L.has been recorded in Tibetan historical literature, and there is a Judglans tree with 2 200 years old Tibetan Autonomous Region.Around 1.2 ×10 5 ancient Judglans trees with an area of 1.0 ×10 4 hm2 are dis-tributed in this region.The study from paleontological archaeology shows that pollen of Judglans has been existed from the Cretaceous period (1.37×108-6.5 ×107 years ago) to the Quaternary Pleistocene period (1×104-1.8× 104 years ago) .All relevant study shows that Tibetan Autonomous Region is one of Judglans L.origin.%西藏历史文献中有关于核桃的记述, 西藏有树龄2 200 年的古核桃树, 有1.2 ×10 5株核桃古树, 有面积1.0×104 hm2的核桃林. 古生物考古发现, 从白垩纪 (距今1.37×108-6.5×107年) 到第四纪更新世 (距今1×104-1.80 ×10 4年) 西藏地质剖面中一直有核桃孢粉存在. 相关研究表明, 西藏是核桃的原产地之一.