江西省水稻优势产区重金属污染及累积规律  

Study on Heavy Metal Speciation and Accumulation in Paddy Soil of Jiangxi Province

作　　者：余进祥[1] 刘娅菲 尧娟 

机构地区：[1]江西农业大学,江西南昌330045 [2]江西省农业环境监测站,江西南昌330046 [3]江西省黎川县农业局,江西黎川344600

出　　处：《江西农业学报》2008年第12期57-60,65,共5页Acta Agriculturae Jiangxi

摘　　要：对江西省7个水稻优势主产区的农田土壤环境质量进行监测和评价,发现该省农田土壤环境质量除部分因污水灌溉出现不同程度的重金属污染外,整体上属于清洁型,土壤环境质量适合水稻生产。分析该省50年代以来水稻田土壤中各种重金属的变异,农田土壤中铜、铅、镉和汞的含量呈现富集趋势,铬的含量变化不大,锌、镍和砷的含量出现下降趋势。运用SPSS 14.0对监测结果进行聚类分析研究,农田土壤中的镉、汞和砷等重金属主要来源于农业生产中化学投入品的大量使用,锌、铅和铬等重金属主要来源于大气中的沉降物,铜和镍的土壤含量与成土母质和矿业开采有一定关联。Monitoring on soil environmental quality in 7 main flee production areas in Jiangxi province was conducted, the results showed that paddy soil environment quality was generally clean except for some sites in which paddy soil was polluted by irrigation with waste water. By analyzing the changes of heavy metal elements in paddy soil from 1950s to 2007, it was found that the content of Cu, Pb, Cd and Hg in paddy soil accumulated, that of Cr was invariant, and that of Zn, Ni, As decreased. A multivariate statistical treat- ment with SPSS 14.0 was used to identify geo - chemicals association within paddy soil. The results showed that： （ 1 ） Cd; Hg and As elements were derived from agrochemicals used in agricultural production; （2） Cu and Ni elements were correlative with soil and rock mineralization; （3） Zn, Pb and Cr elements were derived from atmospheric depositions.

关 键 词：水稻优势产区 农田土壤 重金属污染 变异 累积 聚类分析 

分 类 号：X825[环境科学与工程—环境工程]