论文部分内容阅读
前言河流综合开发常是根据流域的自然条件,历史灾情,发电、灌溉、航运、水产等工农、交通国民经济部门发展的需要,在经济上合理、技术上可能的基础上拟定开发方案。随着人类经济活动的发展和人口的增加,就相应地增加了废物量,河流作为人类活动废物的自然接受者,有一定的自净能力,在没有超越其自净能力以前,还能够处理这些废物,不致危害动、植物群正常发展的生态平衡,还能正常地供给人类生产、生活的用水需要,如果废物量一旦超过了河流的自净能力,于是就发生了各种类型的公害。
Preface Comprehensive river development is often based on the natural conditions of the basin, historical disasters, power generation, irrigation, shipping, fisheries and other workers, peasants and transport sectors of national economy need to develop economically reasonable and technically possible development plans based on the program. With the development of human economic activities and the increase of population, the amount of wastes has been correspondingly increased. Rivers, as natural recipients of human activity wastes, have a certain self-purification capability and can handle such wastes without exceeding their self-purification capacity. Will not endanger the ecological balance of normal development of flora and fauna, and will also provide the water needed for human production and life normally. If the amount of wastes exceeds the self-purification capacity of rivers, various types of pollution will occur.