赣州市土地质量地球化学评估及其富硒特征研究  

Geochemical evaluation and selenium-rich characteristics of land quality in Ganzhou City

作　　者：雍太健 张明[1] 陈国光[1] 唐志敏 周墨 湛龙[1] 梁晓红[1] YONG Tai-jian;ZHANG Ming;CHEN Guo-guang;TANG Zhi-min;ZHOU Mo;ZHAN Long;LIANG Xiao-hong(Nanjing Center, China Geological Survey, Nanjing 200016, China)

机构地区：[1]中国地质调查局南京地质调查中心,南京210016

出　　处：《华东地质》2020年第4期403-409,共7页East China Geology

基　　金：中国地质调查局“海峡西岸经济区土地质量地球化学调查(编号:DD2060321)”和“全国土地质量地球化学调查成果集成与服务应用(编号:DD20190519)”项目联合资助。

摘　　要：基于赣州市多目标区域地球化学调查获得的表层土壤数据,对赣州市土壤硒的地球化学特征进行研究,并开展了土地质量地球化学评估。赣州市土壤硒的变异系数属于中等起伏型,局部存在富硒土壤或贫硒土壤,Se含量与pH值呈显著负相关。富硒土壤面积为4224 km2,占总面积的10.76%;硒含量适量的土壤面积为29248 km2,占总面积的74.49%;硒含量处于边缘的土壤面积为5280 km2,占总面积的13.45%;缺硒土壤面积为512 km2,占总面积的1.30%。评估区土地质量整体良好,以优良等级土壤为主,占评估区总面积的57.83%,中等等级土壤占评估区总面积的40.01%,差等级和劣等级土壤较少,占评估区总面积的2.16%。Based on the surface soil data obtained from the multi-target regional geochemical survey in Ganzhou City,the paper studies the geochemical characteristics of Se in soil and carries out the geochemical evalution of land quality.The results show that the variation coefficient of soil Se belongs to moderate fluctuation type,with Se-rich soil or Se-depleted soil partly,and the Se content has significant negative correlation with pH value.The Se-rich soil area is 4224 km2,accounting for 10.76%of the total area,soil with moderate Se content is 29248 km2,accounting for 74.49%of the total area,soil with marginal Se content is 5280 km2,accounting for 13.45%of the total area and Se-deficient soil is 512 km2 which accounting for 1.30%of the total area.The overall land quality in the study area is good,with fine-grade soil dominated,accounting for 57.83%,and medium-grade soil accounting for 40.01%,a few poor-grade and bad-grade soils accounting for 2.16%.

关 键 词：多目标区域地球化学调查 土地质量 富硒土壤 赣州市 

分 类 号：P642.112[天文地球—工程地质学] S159.2[天文地球—地质矿产勘探]