珍稀濒危保护植物领春木(Euptelea pleiospermum)的生态调查研究

ECOLOGLACL INVESTIGATION ON EUPTELEA PLEIOSPERMUM

１．领春木为国家重点保护植物，河南省伏牛山区和太行山区有分布，其中伏牛山有小片群落，但其建群种生长发育受抑制，实际天然更新能力弱，有逐渐被其它速生阔叶树代替的趋势。２．树木解析表明，领春木生长速度缓慢，树高和材积增长前期平缓，后期渐高，胸经（Ｄ）和树龄（Ｙ）成线形关系，Ｄ＝０．３３９２Ｙ－１．６３８（ｒ＝０．９９８４）。３．严禁砍伐，规划保护和开展人工促进更新措施与繁殖栽培实验是恢复和扩大领春木种群数量的重要措施。

Euptelea pleiospermum is the China critical and protected plant distributing the hilly area including the Funiu and Taihang Mountains areas of the Henan Province, there are also small communities in the some small scopes of Funiu Mountains, but the growth of this plant is restrained, the capability of the real natural regeneration is very weak, it′s possible of replacement with other accelerating broadleaf trees. 2. It can be seen from the analysis of the full stem of Euptelea pleiospermum, its growth rate is slow in general, the annual growth of the tree-high and the increment in volume slows down in the earlier stage, and accelerates in the later stage, The important linear relation exists between diameter breast-high (abbr:D) and the year (abbr: Y), the regression equation: D=0.3392Y-1.638 (relation coefficient r=0.9984). 3. Strictly prohibiting felling, planning protection, and carrying out the natural regeneration and the reproductive cultivation is an important measure for regaining and expanding the population of Euptelea pleiospermum.