南极地区苔藓剖面中地球化学元素的营养运移特征

Transfering feature of geochemical elements on the vertical section of moss in Antarctic

对采自南极的苔藓剖面上各层苔藓的地球化学元素含量进行分析 ,得到以下的初步结论 :地球化学元素在苔藓剖面上的分布具有很强的继承性 ;不同地球化学元素在苔藓剖面上的分布特征不同 ,这与元素在苔藓中的营养特征有关 ,研究发现元素 Ca在苔藓体内 ,异常活跃 ,它极易被累积在新鲜苔藓体内 ,Zn也是苔藓易吸收的元素 ;地球化学元素在老新苔藓中的转移能力不同 :底层苔藓的元素转移能力很低 ,中层苔藓中元素维持在基本平衡的状态 。

Based on the geochemical element analysis on the different layer of mosses in Antarctic the results are as follows:Along with the reproduction of new generation mosses.The nutrient elements in the old plants are migrated into the fresh ones. Geochemical elements distribute particularly in different depth of the vertical section of moss,for they have special functions in nourishing the plant.The study demonstrates that calium is very active and is easily accumulated in the young moss. Similarly, zinc is easily absorbed by moss. Geochemical elements have diffferent capacity in transfering from the old mosses to the young ones.Elements keep steadily in the middle depth of the vertical section,while they transport easily into the young ones.