区域生态地球化学评价核心与对策  

THE CORE AND COUNTERMEASURES OF REGIONAL ECOLOGICAL GEOCHEMICAL ASSESSMENT

作　　者：杨忠芳[1] 奚小环[2] 成杭新[3] 周国华[3] 陈德友[4] 张建新 袁晓军[6] 冯海艳[1] 陈家玮[1] 刘爱华[1] 汤奇峰[1] 余涛[1] 

机构地区：[1]中国地质大学地球科学与资源学院,北京100083 [2]中国地质调查局,北京100011 [3]中国地质科学院地球物理地球化学勘查研究所,廊坊065000 [4]四川省地质调查院,成都610081 [5]湖南省地质研究所,长沙410008 [6]江苏省地质调查院,南京210018

出　　处：《第四纪研究》2005年第3期275-284,共10页Quaternary Sciences

基　　金：四川省成都经济区农业生态地球化学评价项目(批准号:基[2003]012-03);湖南省洞庭湖农业生态地球化学评价项目(批准号:基[2004]012-03);中国农业生态地球化学评价体系研究与成果集成项目(批准号:基[2004]012-16);中国地质调查局地质调查技术标准研制;修订与升级项目(批准号:[2004]015-01)

摘　　要：生态地球化学是地学与土壤学、农业、环境学和生态学等多学科交叉融合产生的新学科,是地球化学领域新的发展方向。区域生态地球化学评价是在区域地球化学调查基础上,针对影响流域/区带生态系统安全性的元素异常而开展的一项评价和研究工作。多目标区域地球化学调查获得的海量高精度地球化学数据,可为环境质量评价提供背景值、为土地的质量和生态管护提供地球化学依据;调查还发现了一系列影响流域生态安全性的元素异常,针对异常元素分布特征,区域生态地球化学评价将开展异常元素追踪和成因甄别、生态效应评价和生态系统安全性的预警预测等项评价和研究工作。文章论述了区域地球化学调查成果,介绍了区域地球化学评价的思路,阐述了区域生态地球化学评价的主要问题与对策。Ecological geochemical assessment is not only a new academic subject, but also one of the interdisciplinary approach involving geology, agrology, agriculture, environment science and ecology etc. It is a new developing direction in the area of geochemistry. Based on regional geochemical survey, ecological geochemical assessment was carried out to assess the elementary abnormity which influences the valley/region ecosystem safety. Vast and precise geochemical data obtained by multi-purposes regional geochemical survey can supply the background value for environmental quality assessment, and provide geochemical base for soil quality and ecological management and protection. A series of elementary abnormity influencing ecological safety of drainage basin was also found in this survey. Furthermore, tracing elementary abnormity, discriminating the cause of formation, assessing the ecological efficiency, and forecasting and early warning on ecosystem safety and so on are going to be carried on for regional eco-geochemical assessment aimed at the trait of elementary abnormity distribution. In this paper, the results and conclusions of regional geochemical survey were summarized, and the sketch of regional geochemical assessment was introduced. The main problems and their countermeasures for regional eco-geochemical assessment were also discussed.

关 键 词：区域生态地球化学评价 异常元素追踪 生态效应评价 生态系统安全性的预警预测 

分 类 号：S154[农业科学—土壤学]