Spatial Variability of Nutrient Properties in Black Soil of Northeast China

doi:10.1016/S1002-0160(07)60003-4

Pedosphere

Volume 17, Issue 1, February 2007, Pages 19-29

https://doi.org/10.1016/S1002-0160(07)60003-4 Get rights and content

Abstract

A total of 1400 soil samples from the plow layer (0–20 cm) at an approximate interval of 5 km were collected in the autumn of 2002 over the entire black soil arable crops region to determine the spatial variability of seven variables, such as total organic matter content (OMC), total N, total P, total K, alkali-dissolvable N (AN), available P (AP) and available K (AK), with classical statistics and geostatistical analysis across the entire black soil area in Northeast China. In nonsampled areas ordinary kriging was utilized for interpolation of estimated nutrient determinations. Classical statistics revealed highly significant (P ≤ 0.01) correlations with all seven of the soil properties, except for OMC with AP and total K with AK. In addition, using coefficients of variation, all soil properties, except for total K, were moderately variable. A geostatistical analysis indicated that structural factors, such as parent material, terrain, and water table, were the main causes of the spatial correlations. Strong spatial correlations were noted with OMC, total N, total P, AN, and AP, while they were moderate for total K and AK. The effective spatial autocorrelation of OMC, total N, total P, and AN ranged from 1037 to 1353 km, whereas the ranges of total K, AP, and AK were only from 6 to 138 km. The fit of the experimental semi-variograms to the theoretical models indicated that except for AN, kriging could successfully interpolate other six variables. Thus, the geostatistical method used on a large scale could accurately evaluate the spatial variability of most black soil nutrient properties in Northeast China

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Citation Excerpt :
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¹: Project supported by the National Basic Research Program (973 Program) of China (No. 2005CB121108) and the Heilongjiang Provincial Natural Science Foundation of China (No. C2004-25).

View full text

Spatial Variability of Nutrient Properties in Black Soil of Northeast China1

Abstract

Geoderma

Geoderma

Geoderma

Geoderma

Optimal interpolation and isarithmic mapping of soil properties. I. The semi-variogram and punctual kriging

Journal of Soil Science

Optimal interpolation and isarithmic mapping of soil properties. II. Block kriging

Journal of Soil Science

Optimal interpolation and isarithmic mapping of soil properties. IV. Sampling strategy

Journal of Soil Science

Field-scale variability of soil properties in Central Iowa soils

Soil Sci. Soc. Am. J.

Geostatistical analysis of soil properties of mid-west Taiwan soils

Soil Science

Land quality assessment and monitoring: The next challenge for soil science

Pedosphere

Assessment of distribution of erosion material and soil organic carbon using fly ash as a time marker at a sloping field in black soil region

Acta Pedologica Sinica

Exploring the spatial relations between cereal yield and soil chemical properties and the implications for sampling

Soil Use Manage

Impact of long-term fertilization on phosphorus status in black soil

Pedosphere

Spatial heterogeneity of exchangeable iron content in cultivated soils of Shenyang suburbs

Journal of Soil and Water Conservation

Spatial Variability of Nutrient Properties in Black Soil of Northeast China¹