中文摘要：

文化变革（包括知识革新、思想解放、口号宣传等）是水资源管理政策变迁的重要原因。目前针对水文化的相关研究多数采用定性分析方法，难以客观准确地揭示水文化变迁的阶段性特点。作为一种新兴的知识发现方法，科学知识图谱能够全方位揭示知识的来源和发展规律，具有用作一种水文变迁定量研究方法的潜力。通过提取《人民日报》中与水相关的文章关键词，绘制出1946—2012年我国水文化变迁的知识图谱并对图谱解读，分析出我国水文化变迁的轨迹；将水文化变迁与当时的水政策、水利开发阶段和水文极端事件进行关联，发现具有较好的协同性，显示出科学知识图谱是定量研究水文化变迁的有效分析方法。进一步深化报纸普适性、关键词提取准确性以及可视化分析精确性等方面工作是提升基于科学知识图谱的水文化变迁定量研究水平的可靠途径。

英文摘要：

Cultural transformation （including knowledge innovation, ideological emancipation and slogan pub- licity, etc. ） is one of the most important drivers of changes in water management policies. Earlier studies into water culture were mainly based on qualitative methods. However, using only qualitative methods, it is difficult to reveal the stage characteristics of water culture evolution objectively and accurately. Mapping knowledge domains, a rising knowledge discovery method, can holistically reveal the sources of knowledge and the laws of its development. This paper is devoted to exploiting its potential as a quantitative method for researches targeting at water culture evolu- tion. By extracting the key words related to water from People＇ s Daily, knowledge domains on water culture evolu- tion in China during 1946-2012 are mapped and interpreted, based on which the water culture evolution is un- veiled. By comparing the water culture evolution with changes in water policies, stages of water resource develop- ment and extreme hydrological events, it is found that there exist clear relationships. This convinces us that map- ping knowledge domains could play an effective role in quantitative research on water culture evolution. Further steps towards better quantitative researches on water culture evolution using this method include the enhancement of the universality of newspapers, improvement on the accuracy of key words extraction, and increase in the precision of visualization analysis.