黑龙江省松嫩平原南部黑土的元素含量特征

Characteristics of Element Contents in the Black Soil in the Song-Nen Plain of Heilongjiang Province

通过对黑龙江省松嫩平原南部开展多目标地球化学调查工作,全面查清了测区8.15万km2内元素分布特征及不同土壤类型中元素含量特征。通过对不同土壤类型中元素含量特征进行分析研究,发现松嫩平原南部的黑土类土壤中主要营养元素含量较丰富,而有毒有害元素含量较低,土壤呈中性,适宜多种农作物生长。按照土壤环境质量标准对测区土壤环境质量进行等级划分,结果显示:重金属元素均未超标的一级土地质量占调查区总面积的96.08%;农业用地的黑土区域均属于没有重金属污染的净土,有利于农业种植。

Through the muhiobjective geochemistry exploration in the southern area of the Song-Nen plain, the distribution characteristics of different elements and their contents in different kinds of soils in the 8. 15 square kilometers area are ascertained. On the basis of analysis on contents of elements in different kinds of soils, the paper reveals that black soils are rich in nutritious elements, and the contents of toxic elements are low. The black soil shows neutral and fits for planting. According to the classification of soils in the measurement area in term of environmental quality standard for soils, the first-grade region, in which none of the elements exceed the standard in the area, totally account for 96.08 percent. The black soil of agricultural land is pure land with- out heavy metal element pollutions and is suitable for planting.