当今世界面临的一个全球性重大课题,就是怎样认识和解决水资源匮乏水环境恶化的问题,如何建立水资源保护系统工程,以促进社会、经济、资源的协调发展。在中国,有二千多个市县,人口占80%以上,所以研究县域水资源保护问题具有深远的现实意义。 A major global issue facing the world today is how to understand and solve the problem of deteriorating water environment and how to establish a water conservation system project so as to promote the coordinated development of society, economy and resources. In China, there are more than 2,000 cities and counties with a population of over 80%, so studying the protection of county water resources is of far-reaching practical significance.