重心转移曲线在时空演化模式表达中的应用  

Employing a Centroid Transferring Curve to Spatio-temporal Evolution Patterns

作　　者：李光强[1] 曾绍琴[1] 邓敏[1] 肖邱勇[1] 

机构地区：[1]中南大学地球科学与信息物理学院,长沙市麓山南路932号410083

出　　处：《武汉大学学报（信息科学版）》2013年第8期940-944,共5页Geomatics and Information Science of Wuhan University

基　　金：湖南省自然科学基金资助项目(09JJ6061);国家高等学校博士学科点专项科研基金资助项目(20110162110056)

摘　　要：探讨了一种利用重心模型进行时空演化模式定量化表达的方法,并以湖南省1983～1992年疟疾发病空间分布数据为例,通过计算每年度疟疾重心坐标,生成疟疾重心转移曲线,定量地表达湖南省疟疾的时空演化过程。将此方法结果与空间自相关分析结果进行比较,发现两者基本一致。多尺度的重心转移曲线实验结果表明,此方法的尺度效应不明显。To express the geographical phenomenon spatio-temporal evolution patterns, many methods via graphs as the result of spatial autocorrelation analysis have been proposed. However, these methods do not effectively express spatio-temporal evolution. Thus, a cen- troid-based method was employed to express quantitatively the spatio-temporal evolution pat- terns. Malaria spatial distributions data, for Hunan Province eentroid coordinates are com- puted of every year from 1983 to 1992, as an example. Next, the spatio-temporal malaria e- volution process in Hunan Province is expressed via the malaria baryeenter curve, composed of these eentroid coordinates. In order to verify the results, we compared the eentroid-based results and the results from a common spatial autoeorrelation analysis technique. The com- parison showed two results are in agreement. Finally, two-scale malaria barycenter curve are computed. This experiments showed that the multi-scale effect is not so obvious.

关 键 词：时空演化模式 重心转移曲线 空间自相关 多尺度 

分 类 号：P208[天文地球—地图制图学与地理信息工程]