【作者】 许家琦； 李颜伶； 舒红； 刘艳；

【机构】 武汉大学测绘遥感信息工程国家重点实验室； 青岛勘察测绘研究院； 中国气象局乌鲁木齐沙漠气象研究所；

【摘要】 地质统计是以随机场平稳为前提条件,然而在现实中这个前提条件未必成立。因此在统计建模前,需要检验数据在空间上的平稳性。本文针对中国东北地区的气象数据(日气温,日风速和月降水),采用散点图法,趋势线法和邻域圆法探讨了空间数据平稳性检验的问题。结果日气温数据有南高北低的趋势,月降水数据有东高西低,南高北低的趋势,日风速数据在空间上平稳。这些结果与实际地理情况相吻合。更多还原

【Abstract】 Geostatistics is essentially based on the assumption that the random field is stationary,however in reality this assumption does not necessarily hold. Hence, it’s necessary to test spatialstationarity before statistical modeling. Three-dimentional scatter plot method, trend line methodand neighbor circle method are used to test spatial stationarity on meteorological data(temperature,precipitation and wind) in the Northeast district of China. Temperature datum are high in the southpart and low in the north part, precipitation datum are high in the southeast and low in thenorthwest, while wind speed datum can be assumed as spatial stationary in the Northeast districtof China. Three methodologies achieve the same results that in accordance with the actualgeography.更多还原