摘要
The landscape index is a quantitative index which reflects characteristics of structure composition and spatial pattern in landscape studies,it is,therefore,expected to describe the spatial pattern of scientific research in bibliometric analysis.In this study,a novel attempt to regard scientific research as a kind of‘landscape’was made,and landscape indices were improved for bibliometric analysis to measure the spatial pattern of scientific research.For illustrating the feasibility of our method,global geoscience research from 1994 to 2018 was presented as a case.Moreover,spatiotemporal migration of landscape centroids was visualized.The results indicated that global geoscience publications increased steadily and articles were highly concentrated at the country level.The top 10 countries published 69.93%of total articles and 84.68%of geoscience articles were from top 20 productive countries.The spatial migration of centroids was mainly reflected in the longitude because of significant increasing of articles in eastern countries,especially in China with the growth rate of 747.14%.At the patch scale,the change trend of improved landscape indices verified the spatiotemporal changes of global distribution of geoscience articles.At the landscape scale,the strengthening of global international collaboration is the main driving forces of spatial heterogeneity of global geoscience research.This study is expected to help readers to understand global trends of geoscience research in the past 25 years,and to promote the development of bibliometric analysis towards the directions of spatialization and visualization.
基金
This work was jointly supported by the project of National Social Science Fund of China(17ZDA188)
the National Natural Science Foundation of China(Grant Nos.41830648,41771453).
