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本文讨论了全国39个土类中(8个高山土除外)的29个土类的稀土元素总量、可溶态稀土含量及其影响因素。结果表明,全国土壤中稀土总量平均为195.7ppm,其中南方246.75ppm,北方169.48ppm,西北137.03ppm。可溶态稀土含量,平均为8.70ppm,其中北方7.1ppm,南方11.6ppm。60%的土壤可溶态稀土含量处于低水平状况,属于缺乏区;30%的土壤处于中等水平,潜伏着缺乏稀土的可能性。土壤中稀土总量主要有成土母质和气候条件所控制。可溶态稀土元素含量则有成土母质中可溶态稀土含量决定,成土过程和土壤理化性质也有一定程度的影响。
This paper discusses the total rare earth elements, soluble rare earth contents and their influencing factors in 29 soils of 39 soil types (excluding 8 alpine soils) in China. The results show that the average amount of rare earth in soil is 195.7ppm, of which 246.75ppm in the south, 169.48ppm in the north and 137.03ppm in the northwest. The content of soluble rare earths averages 8.70ppm, with 7.1ppm in the north and 11.6ppm in the south. 60% of the soil soluble rare earth content at a low level, belonging to the lack of area; 30% of the soil at a moderate level, the potential lack of rare earth potential. The total amount of rare earth in soils is dominated by the parent material and climatic conditions. The content of soluble rare earth elements is determined by the content of soluble rare earth in the parent material, and the soil forming process and soil physical and chemical properties also have a certain degree of influence.