贵州习水国家级自然保护区穗花杉的种群资源现状特征分析

Status quo of population resources of Amentotaxus argotaenia in Guizhou Xishui National Nature Reserve

为探讨习水自然保护区穗花杉的种群资源现状特征,采用每木调查法在保护区对穗花杉分布区域进行野外实地调查,并记录其生境条件和种群特征。结果表明:保护区内发现穗花杉共计557株,幼体所占比例较大。它们大致分布于东经105.91109°~105.940304°,北纬28.240902°~28.247049°,海拔1247 m^1383 m,坡度为60°的生境条件下。习水穗花杉种群结构较为完整,处于顺向演替阶段,发展趋势良好,但其数量稀少,生长缓慢,扩散性弱,亟需得到合理保护。

In order to explore the distribution status and protection measures of the plant resources of Amentotaxus argotaenia in Xishui National Nature Reserve,we carried out field survey of the habitat conditions and population characteristics of Amentotaxus argotaenia in Xishui National Nature Reserve.A total of 557 Amentotaxus argotaenia trees were found in the reserve,and the proportion of seedlings was large.The trees roughly distribute between 105.91109°E and 105.940304°E,28.240902°N and 28.247049°N,1247 m and 1383 m above sea level,and at 60° slope.The population structure of Amentotaxus argotaenia in Xishui is relatively complete,and the development trend is good.Yet the plant is few in number,grows and spreads slowly,and needs to be properly protected.