吉林省榆树市黑土中砷含量调查及影响因素分析  

Study on Arsenic Content and Its Affecting Factors in Black Soil of Yushu City of Jilin Province

作　　者：曹会聪[1] 王金达[1] 张学林[1] 

机构地区：[1]中国科学院东北地理与农业生态研究所

出　　处：《吉林农业大学学报》2007年第1期83-85,101,共4页Journal of Jilin Agricultural University

基　　金：国家重点基础研究发展规划(973)项目(2004CB41850407);中国科学院知识创新工程重大项目(KZCX1-SW-19-4-01)

摘　　要：调查了吉林省榆树市黑土与玉米中的砷含量,并分析了其影响因素。结果表明:研究区内各样点的土壤砷含量基本都高于本地砷含量的平均背景值,但各采样点的土壤砷含量均未超标。土壤砷含量半方差值呈有规律持续增加趋势,可用指数方程很好地拟合。表层土壤含砷量存在一定的空间结构性,高砷区出现在城市市郊,并以其为中心呈斑块状向周围扩散。由于人为活动的影响,砷含量与土壤pH和有机质均未呈现显著的相关性。Investigation of arsenic content in black soil of Yushu city in Jilin province was carried out, and the affecting factors were analyzed. The results showed that arsenic content was higher than the background value of black soil, but it was lower than the environmental quality standard for soils. The variograms of arsenic persistently increased and could be fitted by exponential equation. Arsenic in soil layer of 20 cm had good spatial structures, and the accumulation areas of Arsenic were mainly farmland of suburb. There was no significant correlation between arsenic content and pH and the organic matter content in black soil due to the influence of anthropogenic activities.

关 键 词：砷 黑土 半方差 克里格插值 吉林省榆树市 

分 类 号：X53[环境科学与工程—环境工程]