Acta Geographica Sinica ›› 2004, Vol. 59 ›› Issue (6): 989-997.doi: 10.11821/xb200406023

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Spatial Variability and Pattern Analysis of Soil Properties in Dehui City of Jilin Province

LI Xiaoyan1,2, ZHANG Shuwen1, WANG Zongming1, ZHANG Huilin3   

  1. 1. The Institute of Northeast Geography and Agricultural Ecology, Changchun 130012, China;
    2. The Station of Soil Fertilizer of Jilin Province, Changchun 130054, China
  • Received:2004-04-21 Revised:2004-07-10 Online:2004-11-25 Published:2004-11-25
  • Supported by:

    The Key Item of Knowledge Innovation Project of CAS, No.KZCX2-SW-320-1


Based on regionalized variable theory, semivariograms of geo-statistics were used to research the spatial variability of soil properties quantificationally. The results showed that the semivariograms of soil organic matter were best described by spherical model, the best model for semivariograms of soil N and available K were exponential model and that of available P belongs to linear with sill model. Those soil properties have different spatial correlations respectively, the range of organic matter is the highest and that of available P is the lowest, and the spatial correlation of N and available K belongs to moderate class. Their spatial heterogeneity degrees were different too. The degrees of organic matter and total N were the highest, the degree of available K was in the next place and that of available P was the lowest. Influenced by the shape, topography and soil of the study area, all isotropics of available P were obvious in all directions while anisotropics of others were manifested. According to the analytical results, supported by GIS, Kriging and IDW were applied to describe and analyze the spatial distribution of soil properties. The results indicated that soil organic matter, total N and available K were distributed regularly from northeast to southwest, while available P was distributed randomly and its structural characteristics were not so distinctive as those of others.

Key words: geo-statistics, GIS, soil property, spatial variability, spatial interpolation, Dehui city, Jilin Province