Focusing on the elements of water and air, the system analyzes and apprises in both discharge concentration and total amount control. 针对地面水和大气环境要素，分别从浓度排放和总量控制要求两个方面来分析和评价。
Environmental capacity is a natural science nomenclature to describe the pollution capacity that accommodated by the environmental stuffs. 环境容量是描述环境要素纳污能力的自然科学表述。
