中国地球科学研究的世界贡献及其时空变化

World contribution of chinese geoscience and its temporal and spatial changes

基于WoS和ESI数据库对我国地球科学在全球地球科学研究中的贡献进行了定量分析，包括论文量、引用次数、篇均被引频次、高影响论文、高被引作者、高水平期刊发文、研究热点等情况；对中国国家自然科学基金资助项目对我国地球科学研究论文产出的贡献进行了分析，并基于质心法分析了全球尺度上地球科学研究活跃中心的时空变化特征。研究结果显示：（1）随着我国地球科学研究论文数量的快速增长，论文总被引次数也快速增加，但篇均被引频次的增长并不显著；（2）从主要国家地学资助机构的贡献度来看，中国国家自然科学基金（以下简称“科学基金”）对我国地球科学的资助产生的成果最多，在科学基金的支持下中国与美欧澳日等发达国家开展了较多的国际合作研究，并产生了一定的国际影响力；（3）近10年来青藏高原、地球化学、华南地区等是我国地球科学基金资助论文的热点研究方向或研究区域，近年来关于遥感、气候变化、数值模拟、地质年代、南海等的研究论文成果增长较快；（4）根据质心公式计算出全球地球科学论文每年发文量和引用量的质心坐标，世界地球科学研究中心整体呈现出由西向东迁移，但引用量质心的迁移速度整体上滞后于发文量质心的迁移，世界地球科学研究中心的稳定持续东移将需要更长的时间。

Bibliometrics can play objective, scientific, justified and effective supplementary roles in scientific evaluation and scientific research management. The contributions of China＇s geoscience researches to global geoscience researches were quantitatively analyzed based on the WoS and ESI databases. The analysis items include paper numbers, cited times, average number of citations per paper, highly influential papers, highly cited authors, high level journals, and research hotspots. Furthermore, the contributions of the National Natural Science Foundation of China （NSFC） to China＇s geoscience researches were analyzed. The results indicate that the paper numbers and total cited numbers of the China＇s geoscience researches has been growing rapidly. But the average number of citations per paper needs to be promoted. The contribution degrees of the China＇s funding agencies of the geoscience researches were calculated and the result indicated that NSFC generated most of the achievements in geoscience researches. Supported by the NSFC, China has more cooperation researches with the developed countries such as USA, Europe, Australia, and Japan, which brings some international impacts. According to the papers Supported by the NSFC, the hotpot research directions mainly include Qinghai-Tibetan Plateau, Geochemistry, and South China In the recent 10 years. The papers about remote sensing, climatic change, numerical simulation, geological ages, and South China Sea have grown rapidly, which indicates we have made new progress in quantitative and large scale researches using modern technologies. In additional, the researches on the oceans and atmosphere have been developed. The results indicate that most of the countries or regions have the increasing tendencies with the exponential models. Both of the centroids of paper numbers and cited times mainly move from west to east as a whole. But the cited times in the East have higher increasing speed than the paper numbers. The centroids of the cited times are approximately continuously migrating eastward. It was shown that the centroid method was successfully used to monitor the spatiotemporal dynamics of the paper numbers and cited times.