• 论文 •

### 长白山自然保护区生态环境的化学结构

1. 中国科学院长春地理研究所
• 出版日期:1982-01-15 发布日期:1982-01-15

### THE CHEMICAL STRUCTURE OF ECOLOGICAL ENVIRONMENT IN THE CHANGBAI MOUNTAIN NATURE RESERVE

Huang Xichou, Zhu Yauming, Fu Deyi, Meng Xianxi, She Zhongsheng

1. Changchun Institute of Geography, Chinese Acadeng of Sciences
• Online:1982-01-15 Published:1982-01-15

Abstract: The Changbai Mountain Nature Keserve is one ot the nature reserve of the MAB Programme. The whole ecosystem appears to be vertically differentiated into zones. This study shows that in the ecological environment, not only the composition and content of chemical element have obvious areal diferentiation, but also the migration, exchange and cycling of chemical elements in each vertical zone are clearly different.In the rock soil and plant of different vertical zones of Changbai Mountain, the changes of Zn and Pb content apparently and consistently present positive abnormality, while the changes of Cr and Xi content present negative abnormality; so that this region should, be called the bio-geochemistry region with high Zn. Pb content and low Cr, Xi content.The chemical composition and content of the- rock and soil in the Alpine tundra zone is similar to those of the rock and soil in the Ermans Birch zone, both of them have higher K, Xa contents and lower Ca. Mg, Fe, Mn contents. And contrary to the contents of those chemical compositions of the rock and soil in the coniferous and broad-leaved mixed forest zone, where has lower K. Xa contents and higher Ca, Mg, Fe, Mn contents. This difference is mainly resulted from different mineral composition of base rock.The bio-concentrative characteristics of trace elements in each zone are different too. Some elements are of lower content in rock and soil, but of higher content in plants. It indicates that those elements are bioelements to plant. Of course, these bioelements assimilated from environment by plant are only in limited amount; it indicates that the element content in plant is not in a simple linear relationship to the ele-