YU Hai-long,GU Wei.The Basic Properties and Heavy Metal Pollution Assessment of Road Area Soils in Taiyuan City Belt Expressway[J].Research of Soil and Water Conservation,2010,17(03):49-52,58.
太原市绕城高速公路路域土壤特性与重金属污染评价研究
- Title:
- The Basic Properties and Heavy Metal Pollution Assessment of Road Area Soils in Taiyuan City Belt Expressway
- Keywords:
- road area soil; soil property; heavy metal pollution
- 分类号:
- S153;X53
- 摘要:
- 为了揭示高速公路路域内部不同功能区强烈人为活动对土壤环境质量的影响，以太原市绕城高速路域内不同功能区为研究对象，于各功能区内随机布点，采集表层土壤样品72个，并对其土壤剖面结构、土壤pH值、土壤质地、土壤有机质、土壤重金属元素含量等理化性质和分布规律进行了测定和分析。结果表明，路域内土壤母质来源复杂，剖面层次混乱，土壤反应偏碱性、粗粒化、有机质含量升高和表聚现象较明显。路域土壤重金属污染较为严重，不同功能区的污染元素和污染程度有显著差异。综合污染程度以绿化带含量最高，依次为中央隔离带、互通、路堤边坡、路堑边坡、自然坡。路域土壤的随机空间变异十分突出，无论是土壤性质还是重金属污染积累都如此。路域中存在一些高度污染的区域，必须予以密切关注。
- Abstract:
- To investigate influence of intensive human activities on soil environment quality in different functional zones in expressway road area, the study was conducted in different functional zones from Taiyuan city belt expressway. Toally 72 samples were collected from different functional zones. Analysis of physical-chemical properties including structure of profile, pH, soil texture, soil organic matter, the concentration of heavy metals of the soils were conducted. The results indicated that the source of the parent material of the road area soils was complicated and the soil profiles were disordered. Compared with soils from natural zone, the road area soils showed a trend of increasing soil pH, coarse particle contents, soil organic matter. The pollution by heavy metals in the road area soils was dramatic with the greening belt being the worst. The comprehensive pollution degree, as indicated by the pollution index calculated from the different heavy metal accumulation, is higher for the greening belt and central isolated belt and transaction and upslope and down slope and natural slope. Both the soil properties and the content of heavy metals exhibited a very remarkable spatial variability among the functional zones. Some ‘zones’ with extremely polluted soil with heavy metals might exist in some locations. This should be taken into account of the environmental concerns.
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备注/Memo
收稿日期:2010-1-3。
基金项目:国家自然科学基金面上项目“我国北方地区岩质工程创面生态恢复机理与方法的实验研究”（30870467）
作者简介:余海龙（1979- ），男，甘肃酒泉人，博士，讲师，研究方向为路域生态恢复与重建技术。E-mail：yhl@nxu.edu.cn
通讯作者:顾卫（1956- ），男，吉林长春人，教授，博士，博导，研究方向为生态恢复工程与技术。E-mail：weigu@bnu.edu.cn