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水是一切生命的源泉。水的长期供求计划,是以国民经济和社会发展计划与国土整治规划为依据的,它直接关系到整个国民经济的发展。保证水的稳定供给,对实现四化建设、提高人民身体素质是必不可少的条件。因此,正确认识和掌握水资源状况,开展水资源合理利用和供需平衡研究,已引起国内外的普遍重视。现就水资源供需平衡分析工作中常遇到的保证率和代表年、可供水量、回归水量、水量和水质等几个主要技术问题,简要论述于下。
Water is the source of all life. The long-term water supply and demand plan is based on the planning of national economy and social development and the plan of land consolidation and remediation. It has a direct bearing on the development of the entire national economy. Ensuring the steady supply of water is an indispensable condition for the realization of the four modernizations and for improving the people’s physical quality. Therefore, to correctly understand and master the status of water resources and carry out research on the rational utilization of water resources and the balance between supply and demand has drawn widespread attention both at home and abroad. Now on the water supply and demand balance analysis often encountered in the work of the guarantee rate and representative years, water supply, return of water, water and water quality and several other major technical issues, briefly discussed below.