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以山东省莱芜市为例,考虑河道内生态需水和河道外生态需水,分析了其水资源供需平衡状况。结果表明:2005年莱芜市用水量约等于供水量,社会经济用水稳定供应,社会经济系统的发展未因水资源问题而受到影响,水资源总量供需平衡;未来莱芜市水资源需求平衡指数大于1,且有变大趋势,说明其缺水将越来越严重;若加强需水管理,则未来平水年平衡指数小于1,基本能保持水资源供需平衡。
Taking Laiwu City of Shandong Province as an example, the ecological water demand in rivers and the ecological water demand outside the rivers are considered, and the balance between supply and demand of water resources is analyzed. The results show that the water consumption of Laiwu City in 2005 is about equal to that of water supply, and the supply of social economy water is stable. The development of social economy system is not affected by the problem of water resources, and the balance of supply and demand of water resources is balanced. 1, and there is a trend of becoming larger, indicating that its water shortage will become more and more serious. If water demand management is to be strengthened, the balance index of the future horizontal water years will be less than 1 in the future and the water supply and demand balance can basically be maintained.