青岛市生态地球化学预测与预警研究

摘要

以山东省东部地区农业生态地球化学调查取得的区域地球化学数据为依据,对青岛市生态环境进行现状预警,划分了4类11片生态地球化学预警区.以青岛北部地区(2200 km2)2003年和2007年(本次调查)两批区域调查资料为基础,采用数理统计、相关分析、图件对比等方法,研究土壤元素时空变化,结果表明,4年间土壤中P、OrgC、Ba、La、Ag、B、W、Ga、Ge、Co等元素明显积累,N、Bi、Hg、Cd、Au、OrgC、Pb等元素局部积累现象突出,土壤酸化(pH下降)显著,应引起重视.重点预测了Cd、Hg元素在未来30年内的环境质量变化,并提出建议.%Based on agro-ecological geochemical survey of eastern Shandong Province, the authors divided Qingdao City into 4 types and 11 eco-geochemical areas for ecological environment status early warning. Mathematical statistics, correlation analysis and comparison were conducted between the data obtained from regional survey of north Qingdao (2200 km2) in 2003 and those in 2007 to study the temporal and spatial variation of elements in soil. The result reveals that such elements in soil as P, OrgC, Ba, La, Ag, B, W, Ga, Ge and Co were accumulated significantly in the four years, and elements like N, Bi, Hg, Cd, Au, OrgC and Pb were accumulated remarkably in some places of the study area, and the acidification of soil (pH decrease) was observable. These data strongly suggest that much attention should be paid to the environment. According to the accumulation rate of elements in soil in the four years, the environment quality changes of soil was predicted, and some suggestions were put forward.