成都盆地浅层土壤中Cd来源初探  

Sources of cadmium in surface soils of the Chengdu basin,Sichuan,China

作　　者：任利民[1] 陈代庚[1] 陈德友[2] 唐文春[2] 秦兵[2] 周雪梅[2] 马振东[1] 胡以铿[1] 

机构地区：[1]中国地质大学,湖北武汉430074 [2]四川省地质调查院,四川成都610081

出　　处：《地质通报》2005年第8期744-749,共6页Geological Bulletin of China

基　　金：中国地质调查局国土资源综合调查子项目(200314200017)资助。

摘　　要：利用四川成都盆地多目标地球化学调查获取的大量数据,通过先线性回归再因子分析等多元统计分析方法,重点研究了浅层土壤中Cd元素与其他元素的相关性及在空间上的分布规律,得出浅层土壤中Cd的回归方程及其由元素组合表征的2类来源:自然作用与人为作用。龙门山岩体、沉积地层和硫化物矿床是Cd的主要自然来源;农业活动和城市污染是Cd的人为源,表现为人为作用与自然作用的叠加。这为生态评价和污染防治提供了重要参考。Based on the data from multi-target geochemical survey in the Chengdu basin, Sichuan, the authors studied the correlation between Cd and other 48 elements and their spatial distribution in surface soils of the study area by using linear regression and then factor analysis. A regression equation of Cd and other 28 elements and pH values has been obtained,which may characterize the origin and spatial distribution of Cd in surface soils. There are two sources Of cadmium： natural effects and human activity. The magmatic and sedimentary rocks and sulfide deposit in the Longmen Mountains are the main natural source, and agricultural activity and urban pollution are the anthropogenic source, manifested by overlapping of human activity and natural agency. This study provides important reference for eco-environmental assessment and pollution prevention.

关 键 词：成都盆地 CD 线性回归 因子分析 

分 类 号：S151.93[农业科学—土壤学] P595[农业科学—农业基础科学]