摘要
本文首次提出生物地球化学分异作用的概念。并从地史时期的古生物和现代生物（植物、动物、微生物和人类）的地球化学分异作用事实，论述生物选择吸收分异作用和生物选择富集分异作用两种类型。同时阐明了它们的形成机理：生物体内靶细胞、靶组织和靶器官结构功能和生理作用的特异性和专属性的需求，即内因；而地球的生态环境地球化学物质场内，存在着的电子构型、地球化学参数、物理和化学性质以及不同生态环境条件下，表现各异的地球化学性状的百余种化学元素（离子、分子或化合物），能够满足各类生物的特异性和专属性的物质需求，即外部条件（外因）。内因与外因相结合即是形成机理。生物地球化学分异作用，可为农业、医疗卫生和营养保健以及环境科学的可持续发展提供科学依据，具有理论和实践意义。
he concept“biogeochemical differentiation” is first advanced and studied in detail by the authors. The paper proposes that there are two types of biogeochemical differentiation:selective absorption and selective enrichment differentiation, on the basis of the geochemical differentiation of ancient and modern living beings. The forming mechanism is also expounded. The internal cause is the requirement of peculiarity and specialization of structural function and physiological action of targetcells, targettissue, targetorgans in an organism. In the mass field of the ecoenvironmental geochemistry on the earth, over 100 chemical elements (ion, molecular or compound), various in electron shell type, geochemical parameter, physical properties, chemical properties, geochemical behaviors and ecoenvironmental conditions, can satisfy the requirements of specialization and peculiarity of all organisms. This is the external condition. The internal and external causes constitute the forming mechanism.The theory of biogeochemical differentiation can provide scientific bases for the continuous development of agriculture, medical hygiene, nutritional health protection and environmental science. So, it has a great significance for studying the theory and applying the theory to practice.
出处
《辽宁地质》
1998年第2期131-145,共15页
关键词
生物地球化学
选择
吸收
富集
分异作用
Biogeochemistry Selection Absorption Enrichment Differentiation
