Journal of Geo-information Science >
Spatial Distribution Characteristics of OSDS Registered Users and Its Influencing Factors
Received date: 2015-11-03
Request revised date: 2016-01-28
Online published: 2016-10-25
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The research object of this paper is based on the remote sensing data sharing website (OSDS) founded by the Chinese Academy of Sciences in 2005. Using the nearest neighbor hierarchical spatial clustering method and the model of geographic detector, the spatial distribution characteristics of the registered users and the relevant influencing factors were analyzed. Analysis results show that the overall user space distribution is not balanced, which mainly aggregates in the eastern developed regions and in several areas that have outstanding achievements in the field of surveying, mapping and geographic information science. Information, scientific research and education are the main influencing factors. The influence of economic, network and mapping are low when they are considered separately as a single factor, but their interactions with the main influencing factors would improved the influence. Therefore, there are multiple factors restricting the spatial distribution pattern and regional imbalance of the user group. In this paper, the spatial distribution characteristics and the influencing factors of the user group that is consisted by the remote sensing scholars can be grasped using the geographic detector. The analysis results are helpful to the data providers to deliver services to the targeted users more efficiently, and also provide the references to the adjustment of remote sensing industry and the optimization of spatial layout.
XIE Shuai , LIU Shibin , DUAN Jianbo , DAI Qin . Spatial Distribution Characteristics of OSDS Registered Users and Its Influencing Factors[J]. Journal of Geo-information Science, 2016 , 18(10) : 1332 -1340 . DOI: 10.3724/SP.J.1047.2016.01332
Fig. 1 Spatial distribution of OSDS user registrations图1 OSDS用户注册量空间分布 |
Tab. 1 Detection indices of the influence factors表1 影响因素探测指标 |
影响因素 | 代理变量 |
---|---|
经济 | 人均GDP |
教育 | 普通高等学校数量 |
网络 | 互联网上网人数 |
测绘 | 地形图合计 |
信息 | 每百人使用计算机数 |
人口 | 人口密度 |
科研 | R&D经费 |
Fig. 2 Flowchart of the optimal discretization图2 最优离散化流程图 |
Fig. 3 Line chart of the optimal discretization图3 最优离散化折线统计图 |
Fig. 4 Categorized spatial distribution map of the geographical detecting factors图4 地理探测因子类别化空间分布图 |
Fig. 5 Result of the nearest neighborhierarchical spatial clustering图5 最近邻层次空间聚类结果图 |
Fig. 6 Power of determinant for each influence factor图6 影响因素的因子解释力 |
Tab. 2 PD values of all the influence factors表2 各影响因子PD值 |
影响因子 | PD值/(%) |
---|---|
人均GDP | 31.26 |
普通高等学校数量 | 38.88 |
互联网上网人数 | 24.16 |
地形图合计 | 31.67 |
每百人使用计算机数 | 73.68 |
人口密度 | 38.21 |
R&D经费 | 47.67 |
Tab. 3 Result of the interaction detection表3 交互探测结果 |
C=A∩B | 判断 | A+B | 结果 | 解释 |
---|---|---|---|---|
人均GDP∩高校=0.9347 | > | 人均GDP+高校=0.7014 | P(A∩B)> P(A)+ P(B) | 非线性加强 |
人均GDP∩R&D经费=0.9472 | > | 人均GDP+R&D经费=0.7893 | P(A∩B)> P(A)+ P(B) | 非线性加强 |
人均GDP∩计算机=0.8276 | < | 人均GDP+计算机=1.0494 | P(A∩B)> max(P(A),P(B)) | 双线性加强 |
人均GDP∩地形图=0.8786 | > | 人均GDP +地形图=0.6293 | P(A∩B)> P(A)+ P(B) | 非线性加强 |
网络∩R&D经费=0.9237 | > | 网络+R&D经费=0.7183 | P(A∩B)> P(A)+ P(B) | 非线性加强 |
网络∩高校=0.4820 | < | 网络+高校=0.6304 | P(A∩B)> max(P(A),P(B)) | 双线性加强 |
The authors have declared that no competing interests exist.
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