摘要
本文研究了长白山高山苔原带土壤、植物中14种微量元素的平均含量及其富集克拉克和分散克拉克。探讨了土壤、植物的微量元素地球化学谱。计算了高山苔原植物和大陆植物的生物吸收系数。
The concentration Clarke,the dispersion Clarke and average contents of 14 microelements:Mn,Cu,Cr,Co,Ni,Pb,Zn,Cd,V,La,Mo,Sr, Be and Ba in soils and plants of alpine tundra zone in Natural Cons- ervation Region of the Changbai Mountain which is China's earliest area joining in International Biosphere Conservation Network are studied.The microelement geochemical spectra of soils and plants is approached.The alpine tundra zone in the Changbai Mountain is the biological geochemistry area with high contents of Pb,La,Zn and Mo,and low content of Sr. After calculating the biological absorption coefficient of alpine tundra plants and continental plants,it is found that alpine tundra plants have a characteristic of strong absorbing most of microelements.The research on the biological absorption coefficients of 19 kinds of plants in the region shows that different plants have different absorption capacity to the same microelement,and the same plant has the different absorp- tion intensity to microelements.Each plant has an obvious geochemistry choice for the migration and enrichment of chemical elements.And this choice is carried out in the intrinsic way under the circumstance without the strong interference of human activities.It is impossible to explain completely the biological gathering of elements with physical and chemical laws.
出处
《地理科学》
CSSCI
CSCD
北大核心
1991年第3期244-252,共9页
Scientia Geographica Sinica
基金
国家自然科学基金资助
关键词
冻原
微量元素
地球化学
长白山
Microelement
Geochemical spectrum
Biological absorption coefficient
Alpine tundra plant
The Changbai Mountain
