| 摘要: |
| 以自相关和半方差函数对 40m×45m面积内的90个点进行了土壤容重、田间持水量的空间变异性研究。结果表明,土壤特性表现出空间变异结构 ,但不是完全的随机变异,在一定范围内存在着空间相关现象,且空间结构无明显的方向,并对以空间变异结构为基础的 Kriging估值法作了探讨,其较普通平均法估值精度高。 |
| 关键词: 土壤特性,空间变异性,Kriging法,容重,田间持水量 |
| DOI： |
| 分类号:S152.9 |
| 基金项目:中国科学院“引进国外杰出人才基金”项目 |
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| Spatial variability of field soil properties and Kriging Method |
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| Abstract: |
| Spatial variability of soil bulk density and field moisture capacity is studied with autocorrelogram and semi-variogram at a 40m×45m plotwith ninety test points.The results show that the soil property is imbued with spatial variation- structure,but it's not perfect for random variation,and there exists spatial correlation phenomenon in a limited range and has no obvious direction.Based on the spatia variation-structure of soil properties,the Kringing method is much better than traditional statistical method in precision. |
| Key words: soil property spatial variability Kringing method bulk density field moisture capacity |
