漳州市近郊表土壤总汞空间分布特征及与城市化关系探讨

针对25个采自漳州市近郊自然土壤的表层样品进行了细致汞总量检测,依据市国土部门提供的空间图形数据构建环境信息系统,利用GIS的相关功能进行分析成图.结果表明,研究区内总汞含量分布不均,空间变化大.近郊表土中总汞含量在0.203-1.265mg·kg^-1范围内,平均为0.64mg·kg^-1高于福建土壤背景值.以2003与2007年二个时间断面观察,漳州市城市化主要为其东部区、西部为差异性扩张.扩张迅速区虽然不是总汞含量最高值区,但同未扩张区比较却明显偏高.全区中的总汞高值区与重工业区有一定程度的对应关系.

Spatial Distribution of Total Mercury of Suburb Soils in Zhangzhou and Its Relation to Urbanization

Detect the concentration of total mercury in 25 soil samples which were collected from suburb of ZhangZhou.Construct Environment information system with some datum about space from Land and Resource Bureau in ZhangZhou.Get some maps about this subject by Using the Spatical analyst modul of ArcGis9.2.The results showed that the total mercury distribution of suburb soils in ZhangZhou was asymmetric.The contents of Hg was 0.203-1.265 mg·kg^-1,Mean contents was 0.64mg·kg^-1.Analyzing the land-using maps of 2003 and 2007, we can get that the east suburb of ZhangZhou city was develop fast, the district in the west suburb in ZhangZhou city develop differently. The high contents zone of Hg is the same with the heavy industry zone, to a great degree. The zone develop fast was not the highest contents zone, but its concentration of total Hg was change obviously ,contrasting the concentration of some undevelopmental zone in the same district of ZhangZhou suburb.