豫西熊耳山领春木分布规律调查研究

Study on Distribution of Euptelea pleiosperma Hook. f. et Thoms. in Xiong'er Mountain in the West of Henan Proince

领春木(Eupteleapleiosperma Hook.f.et Thoms.)为国家重点保护野生植物.为了了解领春木在豫西熊耳山的种群数量、分布规律及生长发育状况,对熊耳山的领春木进行了初步调查研究.结果表明:领春木在熊耳山的分布北坡多于南坡,在北坡主要分布于海拔700～1800m范围内,在1200～1500m之间,领春木常成为群落中的亚优势种、优势种或建群种;在南坡,领春木分布于1200～1400m范围内,且呈零星散生状态.领春木为天然次生林群落中的过渡性树种,有被其它沟谷优势植物取代的趋势.熊耳山是领春木的集中分布区和适生区,应加强定向抚育管理和重点保护.

Euptelea amount, distribution, Henan province. The pleiosperma Hook. f. et Thorns is a state level rare plant species. To know well its species growth ruler, preliminarily results show that： there is investigated the resources in Xiong＇er mountain in the west of more Euptelea pleiosperma Hook. f. et Thoms on the north slope than it on the south slope. On north slops, it is distributed mainly an elevation of 700-1 800 m, it is sub-dominant species, dominant species or constructive species; On south slops, it is sporadically distributed an elevation 1 200- 1 400 m elevation. Euptelea pleiosperma Hook. f. et Thoms is a transitional species of natural secondary forest community, and has the trend of being replaced by other dominant species of the valley. Xiong＇er mountain area is a concentrated distribution area and suitable area for Euptelea pleiosperma Hook. f. et Thoms,it should be directed cared and protected in this area.