摘要
基于新疆于田县653组农田表层(0~20cm)土壤样品的六种微量营养元素(Fe、B、Mn、Cu、Zn、Mo)的实测含量,运用地统计学和数理统计等方法对研究区农田土壤主要微量营养元素的含量和空间分布特征进行分析。结果表明:Fe、B、Cu、Zn、Mo的变异系数介于12.12%~86.81%之间,均属于中等变异;Mn的变异系数为9.73%,属于弱变异性。Fe、B、Mn、Cu、Zn、Mo元素的块金效应介于27.9%~60.0%之间,具有中等程度的空间自相关性,空间变异同时受到成土母质和人类活动等因素的影响。研究区农田土壤主要微量营养元素含量总体呈现出从四周向中心含量逐渐增大的趋势。土壤有机质和pH对土壤微量营养元素含量均有不同程度的影响。
Based on the six trace elements(Fe,B,Mn,Cu,Zn and Mo)testing data of 653 farmland surface soil samples(0~20 cm)in Yutian county of Xinjiang,the content and spatial distribution characteristics of trace elements in farmland soil were analyzed by geostatistics and mathematical statistics.The results showed that:the variation coefficient of Fe,B,Cu,Zn and Mo varied from 12.12%to 86.81%.The variation coefficient of Mn element was 9.73%,which was weak variability.The nugget-to-sill ratio of Fe,B,Mn,Cu,Zn and Mo ranged from 27.9%to 60.0%with medium spatial correlation,indicating the influence by the combined effects of parent material factors and human activity factors.The spatial distribution pattern of main trace elements in farmland soil in study area showed an increasing trend from the surrounding to the center.Soil organic matter and pH value had different effects on soil trace elements content.
作者
顾思博
周金龙
曾妍妍
陈云飞
王松涛
杜江岩
GU Sibo;ZHOU Jinlong;ZENG Yanyan;CHEN Yunfei;WANG Songtao;DU Jiangyan(College of Water Conservancy and Civil Engineering,Xinjiang Agricultural University,Urumqi 830052,China;Xinjiang Hydrology and Water Resources Engineering Research Center,Urumqi 830052,China;No.2 Hydrogeology and Engineering Geology Party of Xinjiang Bureau of Geology and Mineral Resources Exploration and Development,Changji 831100,China)
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2020年第3期118-123,共6页
Journal of Arid Land Resources and Environment
基金
新疆自治区地质勘查基金项目(S15-1-LQ)资助.
关键词
农田土壤
微量营养元素
空间分布
于田县
farmland soil
trace element
spatial distribution
Yutian County
