Soil salinity content(SC), electrical conductivity(EC), pH, SAR were studied and analyzed by using statistics and geo-statistics in saline-sodic soil land in the West of Songnen Plain.The result indicated SC, EC, SAR, pH were strongly spatial autocorrelation resulting from compound impact of structural factors.The spatial distribution maps of interpolated by Kriging interpolation showed apparently that the spatial distribution of SC, EC, SAR and pH were similar.Through Peason correlation,the result showed four indexs of salinity and alkalization were significant correlation with relative height.With increasing of relative height, four indexs were increased based curve of quadratic objective function.So salinity and alkalization was mostly controlled by microtopography in saline-alkali land.The research results can serve as a theoretical and technical basis for vegetation restoration and utilization of saline soils in the saline-alkali land.
YANG Fan, ZHANG Guang-xin, YIN Xiong-rui, LI Xiu-jun
. Spatial Variability of Soil Salinity and Alkalization and Its Correlation with Mic-topography in the West of Songnen Plain[J]. SCIENTIA GEOGRAPHICA SINICA, 2009
, 29(6)
: 869
-873
.
DOI: 10.13249/j.cnki.sgs.2009.06.869
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