渭北旱塬连续40年苹果园土壤重金属元素分布特征研究  

The distribution characteristics of heavy metal elements in fruit orchard soil planted 40 years in Weibei Plateau of Shaanxi Province

作　　者：常美蓉[1] 庞奖励[1,2] 张彩云[1] 朱美玲[1] 张卫青[1] 

机构地区：[1]陕西师范大学旅游与环境学院,西安710062 [2]中国科学院地球环境研究所,黄土与第四纪地质国家重点实验室,西安710075

出　　处：《干旱区资源与环境》2009年第8期160-163,共4页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目(40471119;40571154);黄土与第四纪地质国家重点实验室基金(SKLLQG0604)资助

摘　　要：文中对洛川塬面40年连续果林园土壤的Cu、Cr、Pb、Ni、Zn、Mn分布特征进行了研究。结果表明:洛川塬苹果园土壤中除Cu外,Cr、Pb、Ni、Zn、Mn五种元素都表现为剖面上、下部含量基本相同或下部含量高于上部的含量。尽管Cu、Cr、Pb、Ni、Zn、Mn含量未超出土壤环境质量标准,但均高于区域背景值,元素在土壤中发生了累积。主要原因为人类活动造成土层结构的破坏,以及对果园施肥、喷药等管理环节,导致重金属元素向深部的迁移和积累。This research took Luochuan Plateau as a study case. Distribution characteristics of heavy metals in fruit orchard soil were studied, which include Cu ,Cr ,Pb ,Ni ,Zn and Mn. The results showed that except Cu, the content of other heavy metals in deeper layer are the same as upper layers or more than upper layers. The content of all heavy metals is not more than soil environmental quality standards, but is more than regional background values, so elements are cumulatived in the soil. The main causes were human factors such as the strong activities causing the damage of soil structure, unreasonable fertilization and spraying, which made heavy metals migration and accumulation from surface to bottom.

关 键 词：重金属 40年苹果园土壤 渭北旱塬 

分 类 号：S153.61[农业科学—土壤学]