基于海口城乡环境梯度带划定的土壤点位布设思路与方法

Design and Method of Soil Monitoring Site Layout based on the Delineation ofUrban and Rural Environmental Gradient Zone in Haikou City

为满足海口市新时期土壤生态质量评价和污染防治管理需求,海口市亟需布设基于海口城乡环境梯度带划定的土壤点位。通过分析海口市城乡环境梯度带、土地利用类型、成土母岩、土壤类型、污染源分布等,形成了海口市土壤点位布设思路与方法,并应用GIS技术完成点位布设。海口市土壤点位覆盖城市中心区、城乡交错区、农村区、自然区等4个城乡环境梯度带,基本覆盖海口市农用地主要土壤类型和主要成土母岩,布设的点位可以反映海口市不同城乡环境梯度带土壤环境质量整体状况。

In order to meet the needs of soil ecological quality assessment and pollution prevention and management of Haikou in the new era,Haikou urgently needs to set up soil monitoring sites based on the gradient zone of urban and rural environment.Based on the analysis of urban and rural environmental gradient zone,land use type,soil parent rock,soil type and pollution source distribution in Haikou City,the idea and method of soil monitoring sites layout in Haikou City were formed,and the point layout was completed by GIS technology.The soil monitoring sites in Haikou City covered four urban and rural environmental gradient zones,which were spotted in the urban center zone,the urban-rural ecotone zone,the rural area,and the natural area.They basically covered the main soil types and the main soil parent rocks of the agricultural land in Haikou City.The layout of the sites could reflect the overall situation of soil environmental quality in different urban and rural environmental gradient zones in Haikou City.