浙江建德市永久基本农田示范区硒元素分布规律及其来源

The distribution rule and source of selenium in a permanent basic farmland demonstration area in Jiande city, Zhejiang province

本文通过分析土壤地球化学调查数据,对建德市永久基本农田示范区硒元素进行了分析评价,总结了硒元素的分布特征和分布规律,并初步探讨了区内硒元素的来源。研究区硒元素含量从丘陵向平原区有逐渐升高的趋势,大部分富硒土壤都分布在寒武系及奥陶系的灰岩、炭质页岩、钙质泥岩等地层出露区,表明硒元素的分布与成土母岩关系密切,硒元素主要来源于区内的成土母岩。

This study evaluated selenium in the permanent basic farmland demonstration area of Jiande city by analyzing the survey data of soil geochemistry and summarizing the distribution characteristics and regularity of the selenium. The source of selenium in the area was preliminarily discussed. The selenium content in the study area gradually increased from hilly to plain areas. Most of the selenium-rich soil was distributed in Cambrian and Ordovician limestone, carbonaceous shale and calcareous mudstone, which indicated that the distribution of selenium was closely related to the soil parent rock. In the study area, selenium was mainly derived from the soil parent rock.