基于地统计分析的城镇土地定级级别验证研究——以榆树市城区为例

样点地价数据具有随机性、空间分布性和空间相关性等特点,适于采用地统计分析方法进行土地级别的验证。以榆树市城区为例,对地价样点进行处理,采用等值线及三维曲面分析、空间变化趋势分析、样点地价协变分析及泛克里格插值分析等对城市商用土地级别进行验证。结果表明,榆树市商业用地地价总体变化趋势呈南西—北东方向展布;土地初步定级中的1级区域与地价趋势吻合良好,2级区域呈西—西北向展布,与趋势分析结果差异很大,其他定级区域的级别界线也有待进一步调整。

Study on the Test of Urban Land Classification Based on Geostatistics Analysis

Characterized by randomness,spatial distribution and correlation,land price data is suitable for the verification of land level with the method of geostatistics.With the urban areas of Yunlin City for example,the isoline,three-dimensional surface analysis,spatial trend analysis,covariation analysis and University Kriging analysis are adopted to verify the classification of urban commercial lands.The results indicated that,the commercial land price in Yulin changes in the trend of SW-NE;the first-level area matches with the result of land price trend analysis,the second-level area shows the W-WN trend,which differs largely from the trend analysis result,the classification of other areas needs further adjustment.