流域水热耦合过程及其对气候与下垫面变化响应的文献计量分析

生态水文学在水文过程与生态过程的交叉地带开展研究，现已成为水文学与生态学最为活跃的前沿领域之一，而流域水热耦合过程及其对气候与下垫面变化的响应则是其中的一个重要热点研究方向。以SCIE数据库为数据源，借助Thomson Data Analyzer （TDA）、Ucinet和Netdraw等工具，对1992-2015年间关于流域水热耦合过程及其对气候与下垫面变化的响应的研究论文进行数据挖掘，分析表明：（1）近24年来，该领域的论文数量总体呈显著增长态势，依据文章数量、研究主题、机构合作特点等划分为3个阶段：低产出探索期、拓展推进期和高产出活跃期。（2）气候变化、径流、水量平衡、水文模拟、土地利用与覆盖变化等是研究的核心主题，遥感与GIS技术的应用在不断得到加强，人类活动的水文效应及其时程变化等的研究逐渐受到更多的关注。（3）澳大利亚和美国在该研究方向表现突出。中国发文量高，论文质量不断提升。（4）国际合作范围不断扩大。近十年来，中国科学院、清华大学等国内多家科教机构逐渐加强了与国外同行的合作关系，研究工作取得长足进展。

A bibliometric analysis of the literature on coupled water-energy balance at catchment scale and its responses to changes in climate and land surface conditions

Ecohydrology, studying the interactions between hydrological and ecological processes, has become one of most active frontiers in both fields of hydrology and ecology. Coupled water-energy balance (CWEB) at the catchment scale and its responses to changes in climate and land surface conditions are important research area in the interdisciplinary field of eco-hydrology. In this study a bibliometric analysis was conduct to assess current status and future developments in the research area of CWEB. All research papers on the CWEB at the catchment scale published over the period of 1992-2015 were retrieved from the Science Citation Index Expanded (SCIE) database and analyzed by means of TDA (Thomson Data Analyzer), Ucinet and Netdraw. Results of the bibliometric analysis shown that:(1) the number of publications has increased greatly in the past 24 years. Research on the CWEB can be classified into three stages in terms of the number of papers published every year, research subjects and cooperation features, i.e. groping & low yield stage, expansion stage and active & high yield stage. (2) Core themes of the research are climate change, runoff, water balance, hydrological modelling, land use and land cover change, etc. The application of remote sensing and GIS technology has been continuously strengthened. More and more attentions have been paid to the study of hydrological effects of human activities and their temporal variability. (3) High impact publications were largely from Australia and American. There was a significant increase in publications from China in term of both quantity and quality. (4) The extent of international cooperation was expanding. In the past 10 years, Chinese Academy of Sciences, Tsinghua University and many other institutions in China have gradually strengthened the cooperation with a number of international scientific and educational institutions and have made great progresses in the research area of CWEB.