地球环境变化和资源短缺的现象,令人类社会面临巨大挑战,因而备受社会各界关注。我们需要知道地球具有物理和化学属性:地球的物理属性包括大小、空间、形状、密度、电性、磁性、引力、运动等,研究地球这些物理属性的学科叫地球物理;地球的化学属性包括化学元素及其化合物的组成、含量、分布、变化等,研究地球化学属性的学科叫地球化学。“化学地球”不是一个学科概念,而是特指将组成地球的岩石圈、土壤圈、水圈、大气圈和生物圈的化学元素及其 The changes in the Earth’s environment and the shortage of resources have caused enormous challenges to human society and have drawn the attention of all sectors of society. We need to know that the Earth has both physical and chemical properties: the physical properties of the Earth include size, space, shape, density, electricity, magnetism, gravitation, movement, etc. The discipline that studies these physical properties of the earth is called geophysics; the chemical properties of the earth include chemistry Elements and their composition, content, distribution, changes, etc., the discipline of geochemical properties is called geochemistry. “Chemical Earth” is not a subject concept but refers to the chemical elements that make up the Earth’s lithosphere, soil ring, hydrosphere, atmosphere and biosphere and their