水是限制和维系生物活动的主要因子，水文连通性与诸多生态过程联系紧密。作为表征水循环过程中物质、能量和生物体在景观单元之间传输的过程，水文连通性建立了地表水循环过程中景观单元物质与能量流之间的相互联系。运用文献计量方法，以Web of Science数据库及CNKI数据库为数据源，检索国内外水文连通性相关研究文献，运用Bibexcel、Ucient和Citespace等软件分别得到高频词、关键词共现网络可视图，在此基础上梳理国内外水文连通性研究进展。研究结果表明：围绕水文连通性，国内外发文量均呈现上升趋势，自1990年以来，国外水文连通度方面的研究与国内相比起步较早，且增长幅度较大；从关键词频上看，国外多偏重于不同类型生态系统结构功能变化对水文连通性的研究，国内则多偏重于河湖生态系统水系连通演变的研究；爆发词词频分析显示水文连通性与气候变化、生物多样性以及生态系统服务一度成为该领域研究热点；根据共现网络可视图，梳理国内外研究方向，水文连通性与生态过程、不同类型生态系统水文连通性对物质传输的影响，生态系统结构和功能的变化对水文连通性的影响等方面是当前的研究热点。开展不同尺度水文连通性制图，地下水依赖型生态系统水文连通性表征，基于地理信息技术与长期野外监测资料开展多尺度水文连通性定量评估和模型模拟是未来水文连通性研究的趋势。
英文摘要:
Water is the main element that restricts yet maintains most of the biological activities, and hydrological connectivity is closely involved in many ecological processes. Hyrological conectivity can characterize the transport of materials, energy and organisms among landscape units and establish a tie between the materials and energy flow of a certain landscape unit in the process of surface water cycle. Here we adopted bibliometric methods to search hydrological connectivity related researches via Web of Science and CNKI database, combining with Bibexcel, Ucient and Citespace procedures to obtain high frequency words and keyword co occurrence network views, based on which we reviewed the research progress of hydrological connectivity at home and abroad. The results showed that the volume of publications related to hydrological connectivity both at home and abroad showed an upward trend. The research on this topic in foreign countries has started since 1990, which is earlier than domestic research and its increment in the number of the publications is also larger. In terms of keyword frequency, the research in foreign countries tended to focus on the effects of different types of ecosystems structure and function changes on the hydrological connectivity, whereas domestic research focused on the evolution of hydrological connectivity of the river and lake ecosystems. The analysis of the frequency of outbreak words showed that the relationship between hydrological connectivity and climate change, biodiversity and ecosystem services had become research hotspots in this field. According to the co occurrence network view, we found that the current research hotspots are hydrological connectivity and ecological processes, the impact of different types of ecosystem hydrological connectivity on material transport, and the impact of changes in ecosystem structure and function on the hydrological connectivity. Furthermore, multi scale hydrological connectivity mapping, the characterization of groundwater dependent ecosystem hydrological connectivity, and multi scale hydrological connectivity quantitative assessment and model simulation based on geographic information technology and long term field monitoring are the trends of future hydrological connectivity research directions.