The effect of geographical proximity on scientific cooperation among Chinese cities from 1990 to 2010.
The effect of geographical proximity on scientific cooperation among Chinese cities from 1990 to 2010.
复制标题
1990-2010年地理邻近对中国城市科技合作的影响
DOI：
10.1371/journal.pone.0111705
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Li G
中科院分区：
文献类型：
--
作者：
Ma H;Fang C;Pang B;Li G
地理邻近与空间距离之间的关系是一个备受关注的话题。因此，地理上的接近如何影响科学合作，以及地理上接近的科学合作活动是否实际上表现出地理尺度的特征，应该进行调查。选取ISI数据库中1990、1995、2000、2005和2010年发表的中国60个典型城市合作论文，建立城市间地理距离和合作水平矩阵。通过构建距离-合作模型，计算了基于空间距离的科学合作度。利用拟合函数探讨了地理邻近与科学合作之间的关系以及这种关系的变化。(1)随着电信技术的普及，地理邻近性在城市间科技合作中的作用不但没有下降，反而逐渐显著增强：（2）地理邻近性与科技合作之间的关系并不遵循完美的下降曲线，在一定的空间尺度上，距离衰减规律不成立;（3）中国科技合作网络以不同区域中心城市为中心，呈现出区域网络化趋势，在此合作网络中，近距离的城市间合作数量大幅增加。城市间的地理距离与科学合作之间的关系随着时间的推移而得到加强。
The relations between geographical proximity and spatial distance constitute a popular topic of concern. Thus, how geographical proximity affects scientific cooperation, and whether geographically proximate scientific cooperation activities in fact exhibit geographic scale features should be investigated. Selected statistics from the ISI database on cooperatively authored papers, the authors of which resided in 60 typical cites in China, and which were published in the years 1990, 1995, 2000, 2005, and 2010, were used to establish matrices of geographic distance and cooperation levels between cities. By constructing a distance-cooperation model, the degree of scientific cooperation based on spatial distance was calculated. The relationship between geographical proximity and scientific cooperation, as well as changes in that relationship, was explored using the fitting function. (1) Instead of declining, the role of geographical proximity in inter-city scientific cooperation has increased gradually but significantly with the popularization of telecommunication technologies; (2) the relationship between geographical proximity and scientific cooperation has not followed a perfect declining curve, and at certain spatial scales, the distance-decay regularity does not work; (3) the Chinese scientific cooperation network gathers around different regional center cities, showing a trend towards a regional network; within this cooperation network the amount of inter-city cooperation occurring at close range increased greatly. The relationship between inter-city geographical distance and scientific cooperation has been enhanced and strengthened over time.
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