The mode of elements in the area includes detrital and mobile forms.The results show that the element form is a key factor for selecting the sample materials and grain size as well as sampling method.

• 实际资料表明,元素存在形式对采样介质、采样粒度、采样方法的确定有重要影响,对研究区景观地球化学特征、元素迁移富集机制研究和化探异常评价具有重要意义。