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以松嫩平原西部具有典型微地形变化的苏打盐渍土小区为试验区,运用经典统计学和地统计学相结合的方法研究了小区盐碱化指标土壤电导率(EC)、盐分含量(SC)、pH和SAR的空间变异特征,绘制了4种指标的空间分布图。结果表明:受结构性因素和随机性因素的共同作用,4种指标均具有强空间相关性。4种指标空间分布在一定范围内均存在空间上的相似性。四种指标与相对高程呈极显著相关,相对高程在40 cm范围内,四种指标随着相对高程的增加,呈二次函数曲线增加趋势。该研究为苏打盐渍土区植被恢复和盐碱地利用提供依据。
Taking the saline-sodic soil plot with typical micro-topography changes in the west of Songnen Plain as the experimental area, this paper studied the characteristics of soil salinity-alkalinity (EC) and salinity (SC) in the community by using the methods of classical statistics and geo-statistics. ), PH and SAR spatial variability, draw the spatial distribution of four kinds of indicators. The results show that all four kinds of indexes have a strong spatial correlation due to the combination of structural factors and random factors. There are spatial similarities among the four kinds of index spatial distribution within a certain range. The four indexes are highly significant correlated with the relative elevation, the relative elevation is within 40 cm, and the four indexes show a quadratic function curve with the increase of the relative elevation. This study provides the basis for vegetation restoration and utilization of saline-alkali soil in soda saline soil.