摘要
为探讨山西省平陆县主要植烟区烟叶砷的分布情况,以2012年该地烟区的68份烤烟中部叶(C3F)样品为材料,检测了该地区烤烟的砷含量,借助地统计学和GIS结合的技术,研究了平陆烤烟砷含量的空间分布。结果表明,平陆县烤烟砷含量平均值为0.353mg/kg,其变化趋势为由西向东先升高后缓慢降低,由南向北先迅速升高后缓慢降低;平陆县烤烟砷含量与Exponential模型无阶趋势效应拟合度最好,其砷含量各向异性比大于1,具有各向异性;平陆县烤烟砷含量块斑大小、形状有明显的空间差异,空间相关性强,具有明显的趋势效应。烤烟砷含量较高的地区主要分布在曹川镇北部、坡底乡中部、圣人涧镇中部、三门镇西部、张店镇西南部、杜马乡东北部地区。
In order to explore the arsenic （As） distribution of tobacco in the major tobacco production areas in Pinglu county,Shanxi province,68 flue-cured tobacco samples （C3F）were collected from this place in 2012 as materials,the As concentration was measured,and the spatial distribution of As content was studied by geostatistics and GIS technique.The mean concentration of As was 0＆#183;353 mg/kg.The concentration of As first increased and then declined slowly from west to east and from north to south.The best theoretical model for the As content in tobacco leaf was Exponential model,and the anisotropy index was greater than 1,showing anisotropic.The spatial difference of the spot size and shape of the As content in flue-cured tobacco leaf was obvious,the spatial correlation was great,and the trend effect was obvious.The areas with higher As content were mainly distributed in northern Caochuan town,center of Podi country and Shengrenjian town,western Sanmen town,southwestern Zhangdian town,northeastern Duma country.
出处
《河南农业科学》
CSCD
北大核心
2014年第10期30-33,41,共5页
Journal of Henan Agricultural Sciences
基金
中国烟草总公司山西省公司重点科技攻关项目(SY201201)
关键词
烤烟
砷
地统计学
GIS
空间分布
flue-cured tobacco
arsenic
geostatistics
GIS
spatial distribution
