摘要
了解污灌土壤微量元素含量空间分布特征是进行土壤环境评价的重要前提．应用地统计学技术对北京东郊污灌区典型地块８种微量元素含量和土壤理化参数进行了空间结构分析．结果显示，元素在迁移过程中趋向于在排污口附近就近富集，各微量元素含量分布的空间差异性较一般非灌溉农业土壤有所增大，且空间结构特征极为相似．同时，由于采样密度和范围的限制，更细微和更大尺度的空间结构特征尚不能得以表述．
The spatial distribution of 8 trace elements in agricultural soils with sewage irrigation at the eastern suburb of Beijing were studied by variogram analysis. The spatial variations of these elements are much more significant in comparison with those from clean water irrigated soils. This is because of the accumulation of trace elements near the irrigation inlets. The contents of all elements show similar spatial structures.
出处
《环境科学学报》
CAS
CSSCI
CSCD
北大核心
1997年第4期412-416,共5页
Acta Scientiae Circumstantiae
基金
国家自然科学基金
关键词
污灌
土壤
微量元素
空间结构
Sewage irrigation, soil, trace element, variogram, spatial structure.
