山东省黄河下游流域生态地球化学调查主要成果

Major Achievements Gained in Ecological and Geochemical Survey in the Lower Reach of the Yellow River in Shandong Province

农业地质环境调查成果表明,山东省黄河下游流域5.4万km2的土地质量总体状况良好,绝大多数土地是清洁的。调查区内有99.9%的土壤为绿色土壤,可生产无公害小麦、玉米等农产品;一类土壤占92.7%,适宜于发展绿色食品生产;二类土壤占7.2%;三类土壤占0.1%。本次调查发现的重金属严重污染土地集中分布在城市的周边地区。浅层地下水地球化学调查结果表明,区内浅层地下水环境污染状况严重,水质优良的地段主要分布在济宁市区北、平阴周边、长清南、济南市区南部等靠近山前地段,其他平原地区的水环境质量多为较差或极差级(不能饮用)。

As showed by agricultural and geological environment survey results, the overall quality of the land with the square of 54000km^2 in the lower reach of the Yellow River in Shandong province is in good condition, and majority of the land is clean. 99.9% soil in survey region is green soil, which can produce wheat, corn and other agricultural products; first class soil accounts for 92.7% which is suitable for producing green food production; second class soil accounts for 7.2%; and third class soil accounts for 0.1%. In this survey, it is found that land which has been polluted seriously by heavy metal are mainly distributed in surrounding areas of cities. As showed by geochemical survey results of shallow groundwater, the state of environmental pollution in shallow groundwater in this region is serious. Regions with good water quality mainly distribute in the piedmont lot in north of Jining district, surrounding areas of Pingyin county, south part of Changqing county and south part of Jinan city, while water quality in other areas is poor or very poor （not suitable for drinking）.