不同林分、坡位阳春砂生长表现分析

Analysis on Growth of Amomum villosum from Different Stands and Slope Positions

该研究对比分析了不同林分、坡位对阳春砂生长量、生物量分配及干湿比的影响。结果表明:不同林分对阳春砂地径和株高生长具有显著影响,其中香樟林下坡和中坡分别最有利于阳春砂的地径和株高生长;不同林分对不同生长期阳春砂生物量生长的影响不同,杉木林分最有利于幼龄和壮龄阳春砂湿生物量和干生物量的生长,而香樟最有利于老龄阳春砂生物量的生长。林分环境对幼龄根干湿比和茎干湿比具有一定影响,而对壮龄阳春砂干湿比的影响不大。

Comparative analysis on increment,biomass and ratio of wet and dry biomass of Amomum villosum inter⁃planted in different stands and slope positions was conducted.The results showed that different stands had signifi⁃cant effect on the growth of ground diameter and plant height of A.villosum under different types of stands,among which the lower slope and middle slope of Cinnamomum camphora stand were the best for the growth of ground diam⁃eter and plant height of A.villosum,respectively.Different stands had different effects on biomass growth of A.villo⁃sum,and Cunninghamia lanceolata stand was most conducive to the growth of wet biomass and dry biomass of A.vil⁃losum in juvenile and vigorous ages,while C.camphora stand was most conducive to the biomass growth of A.villo⁃sum in old age.Stand environment had a certain impact on ratio of wet and dry biomass of young root and stem and had little impact on ratio of wet and dry biomass of strong-age Amomum villosum.