CAJ | 학술논문

长鞭红景天是国家第二批确定的二级保护植物,处于近危状态.在西藏色季拉山区不同海拔带设置样地,观测长鞭红景天花茎环的形成过程,用游标卡尺(IP54型)测量长鞭红景天植株不同年的轴向生长量和径生长量;分析其主轴生长特性,进行年龄判定,结果表明:长鞭红景天每年在主轴上形成一个花茎环结构,并且轴向生长量和径生长量在年际间均无显著差异,但随海拔升高,轴向生长量和径生长量均呈下降趋势.根据长鞭红景天主轴的生长特性,结合主轴的长度则可以判定其年龄,为进一步研究长鞭红景天种群结构及动态奠定基础.
장편홍경천시국가제이비학정적이급보호식물,처우근위상태.재서장색계랍산구불동해발대설치양지,관측장편홍경천화경배적형성과정,용유표잡척(IP54형)측량장편홍경천식주불동년적축향생장량화경생장량;분석기주축생장특성,진행년령판정,결과표명:장편홍경천매년재주축상형성일개화경배결구,병차축향생장량화경생장량재년제간균무현저차이,단수해발승고,축향생장량화경생장량균정하강추세.근거장편홍경천주축적생장특성,결합주축적장도칙가이판정기년령,위진일보연구장편홍경천충군결구급동태전정기출.
Rhodiola fastigiata is national second-class protected species and in approximately endangered states in China. Increment in length and diameter of rhizome per year were measured using vernier caliper(IP54 type)through observing the scape rings formation of R.fastigiata in different altitude areas of Tibet Sejila Mountain,and then the growth characteristics of rhizome were analyzed to determine the age. The results showed that:R.fastigiata form one scape rings in the rhizome yearly,furthermore,there was no significant difference in length and diameter of rhizome increment at different years,whereas with the altitude increase,increment in length and diameter of rhizome per year was declining. The R.fastigiata's age could be determined according to the rhizome growth characteristics,combining with the length of the rhizome. So this result could lay the of foundation for further population structure and dynamics study of R.fastigiata.