基于GIS的黑土区环境地球化学质量评价

The Geochemical Environment Quality Evaluation on the Black Soil Region Based on GIS

黑土区向来是我国重要的商品粮生产基地 ,对于我国的粮食安全和国民经济的稳定都有着举足轻重的作用。但是大范围的关于黑土区环境地球化学特征的研究却很少 ,本文主要利用黑龙江省 1∶ 5 0万区域化探资料 ,选取五种重金属元素在 GIS支持下对黑龙江省黑土区环境地球化学质量进行了评价 ,评价结果表明 ,本区的地球化学环境质量是比较好的 ,大部分地区处于无污染的水平 ,只是在西北部的克山和克东一些地区处于轻度污染的水平 ;

The black soil region is the important food base of China,It plays a great role in food security and national economy.But there are few studies of regional geochemistry spatial characteristic of the black soil region.By selecting five heavy metal elements,the geochemistry environmental quality of the black soil region in Heilongjiang province is evaluated based on GIS.The result shows that the geochemistry environment of the black soil region in Heilongjiang province is good.There is no pollution in most part of the region.In some part of northwest region there is slight pollution.Only near Bin and Bayan county shows moderate pollution.