张宣地区壳幔演化与生态效应  

Evolution of crust-mantle and its eco-environmental effects in Zhangjiakou-Xuanhua region

作　　者：牛树银[1] 孙爱群[1] 李红阳[1] 侯泉林[2] 宋立军 王宝德[1] 许传诗[1] 

机构地区：[1]石家庄经济学院资源学院,河北石家庄050031 [2]中国科学院地质与地球物理研究所,北京100029 [3]河北省地质调查院,河北石家庄050081

出　　处：《地学前缘》2005年第4期597-606,共10页Earth Science Frontiers

基　　金：国家自然科学基金资助项目(40272088);中国科学院知识创新项目(KZCX1-07);中国地质大调查项目(200110200038)

摘　　要：人类的生存状况与地质环境密切相关。文章以张宣地区为例,阐述了由于该区强烈的幔壳隆升,导致区域性岩(矿)石、土壤的元素背景值异常,使得某些农作物、林果“优质高产”或“劣质低产”。异常的元素分布还会通过粮食、水果、蔬菜、水等饮食进入人体循环,直接影响人类的身体健康,甚至导致某些地方性疾病蔓延。研究表明,张宣地区的地貌景观是中生代以来地质构造演化的结果。幔壳运动是区域地质环境演变的主导因素。The living circumstances of human beings are closely related to the geological environment. As exemplified by the Zhangjiakou-West Beijing region, this paper describes the intensive mantle-crust uplift, which led to anomalous element background values for regional rocks （ores） and soils. As a result, some agricultural crops, forests and fruits are of “super-quality and high-yield” or of “poor-quality and low-yield”. The anomalous elements can find their way into grains, fruits, vegetables and drinking water; where they will then be taken in by human beings. This can directly affect human health and lead to the spread of some endemic diseases. Studies have shown that the geomorphological features in the Zhangjiakou-West Beijing region are the outcome of geotectonic evolution since the Mesozoic. Mantle-crust movement is the key factor leading to the evolution and change of the regional geological environment.

关 键 词：地质环境 元素背景 生态效应 幔枝构造 幔壳运动 张宣地区 

分 类 号：P595[天文地球—地球化学] P541[天文地球—地质学]