宿迁市农业用地土壤中重金属含量的时空异质性分布

Temporal and Space Heterogeneity Distribution of Heavy Metal Content in Agricultural Land Soil in Suqian City

以江苏省宿迁市为研究区域,选取包括宿城区、宿豫区、沭阳县、泗阳县、泗洪县在内的五个地区的农业用地,分析农业用地土壤中As、Hg、Cd等3种元素的含量。研究结果显示:泗阳县农业用地土壤中Hg含量显著大于其他四个地区,泗洪县农业用地土壤中Cd含量显著大于其他四个地区,沭阳县和泗洪县农业用地土壤中As含量显著大于宿城区、宿豫区和泗阳县。结果表明:宿迁市农业用地土壤中重金属As、Hg、Cd含量呈现明显的时空异质性分布。

Five regions’agricultural lands of Suqian city,Jiangsu province as the research area including Sucheng district,Suyu district,Shuyang county,Siyang county,Sihong county were selected to analyze the content of As,Hg,Cd in agricultural land soil.The research results showed that the Hg content in the soil of agricultural land in Siyang county was significantly higher than the other four regions.Cd content in the soil of agricultural land in Sihong county was significantly greater than the other four regions,and As content in the soil of agricultural land in Shuyang county and Sihong county was obviously higher than Sucheng district,Suyu district and Siyang county.The results showed that the content of heavy metal like As,Hg,and Cd in the soil of agricultural land of Suqian city showed a significant spatiotemporal heterogeneity distribution.