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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。
This paper presents the concept of biogeochemical differentiation for the first time. And from the geochemical period of paleontology and modern biology (plants, animals, microbes and human geochemical differences between the fact that the role of biological selective absorption and biological selective enrichment and differentiation of two types. At the same time, we elucidated their formation mechanism: the requirement of the specificity and specificity of structural and physiological functions of target cells, target tissues and target organs in organism, that is, the intrinsic cause; while the earth’s eco-environment geochemical field, there are electronic More than 100 kinds of chemical elements (ions, molecules or compounds) with different geochemical characteristics under different ecological conditions, configuration, geochemical parameters, physical and chemical properties, can meet the specificity and specialization of various kinds of organisms The material requirements, namely external conditions (external factors). The combination of internal and external causes is the formation mechanism. Biogeochemical differentiation can provide a scientific basis for the sustainable development of agriculture, health care, nutrition and health and environmental science, which is of theoretical and practical significance.