摘要
基于若羌县2015年143组0~20 cm土层土壤6种微量营养元素(Fe、Mn、Zn、Cu、Mo和B)的实测含量,运用多元统计分析、地统计学和Arc GIS技术相结合的方法,对研究区土壤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、Mn、Zn、Cu、Mo和B变异系数介于18.2%~47.4%,均属于中等变异。Fe、Mn、Zn、Mo和B的块金效应均小于25%,空间相关性较强,空间变异主要受到土壤母质等结构性变异主导;Cu的块金效应介于25%~75%之间,属于中等空间相关,空间变异受到人为活动等随机因素和结构性因素的共同影响。Fe、Mn、Zn和Cu的空间分布格局相似,总体呈现出从研究区四周向中心含量逐渐增大的趋势;Mo和B的空间分布格局相似,总体呈现出从南向北含量逐渐增大的趋势。土壤有机质、pH值和不同的成土母质、土壤类型、土地利用类型对土壤微量营养元素均有不同程度的影响。
Based on the analysis of seven micronutrients（ Fe,Mn,Zn,Cu,Mo and B） of 143 surface soil samples in Ruoqiang County of Xinjiang,this study used multivariate statistical analysis,geostatistics and Arc GIS to explore the and spatial distribution of these micronutrients. The results showed that：（ 1） the variation coefficient of Fe,Mn,Zn,Cu,Mo and B varied from 18.2% to 47.4%.（ 2） The nugget-to-sill ratio of Fe,Mn,Zn,Mo and B were less than 25% with high spatial correlation,indicating Fe,Mn,Zn,Mo and B were influenced by structural factors such as the parent materials. The nugget-to-sill ratio of Cu ranged from 25% to 75% with medium spatial correlation,indicating the influence by the combined effects of artificial random and structural factors.（ 3） Spatial distribution maps showed the similar spatial distribution characteristics for Fe,Mn,Zn and Cu,with an increasing trend from the surrounding to the center. The spatial distribution pattern of Mo and B was similar,showing an ascending trend from the south to the north.（ 4） Soil organic matter,p H and parent materials,soil types,land use types also influenced soil micronutrients.
作者
曾妍妍
周金龙
陈云飞
王松涛
杜江岩
范薇
ZENG Yan-yan 1,2 , ZHOU Jin-long 1,2 , CHEN Yun-fei 1,2 , WANG Song-tao 3, DU Jiang-yan 3, FAN Wei 1,2(1. College of Water Conservancy and Civil Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China;2. Xinjiang Hydrology and Water Resources Engineering Research Center, Urumqi, Xinjiang 830052, China;3. No.2 Hydrogeology and Engineering Geology Party of Xinjiang Bureau of Geology and MineralResources Exploration and Development, Changji, Xinjiang 831100, China)
出处
《干旱地区农业研究》
CSCD
北大核心
2018年第4期22-28,共7页
Agricultural Research in the Arid Areas
基金
中央返还两权款资金项目"新疆和田-若羌绿洲带1:25万土地质量地球化学调查"(S15-1-LQ)
新疆自治区高峰学科-水利工程学科基金(xjslgcgfxk20161103)
关键词
微量营养元素
空间分布
影响因素
表层土壤
若羌县
micronutrient
spatial distribution
influencing factors
surface soil
Ruoqiang County
