Soil sealing index

<p>The indicator estimates the increase in sealed soil surfaces with impervious materials due to urban development and construction (e.g. buildings, constructions and laying of completely or partially impermeable artificial material, such as asphalt, metal, glass, plastic or concrete). This provides an indication of the rate of soil sealing, when areas change land use towards artificial and urban land use. The indicator builds on data from the imperviousness High Resolution Layer (a product of the Copernicus Land Monitoring Service).&nbsp;The indicator is presented in the following units: Index 2006=100 % of total surface total sealed surface in km2.</p>本指标用于估算因城市开发建设（如建筑、构筑物铺设完全或部分不透水人工材料，例如沥青、金属、玻璃、塑料或混凝土）所导致的密封土壤表面（sealed soil surfaces）增幅。当区域土地利用向人工化城市用地转型时，该指标可反映土壤密封速率。本指标的数据基础为高分辨率不透水层（Imperviousness High Resolution Layer），其系哥白尼陆地监测服务（Copernicus Land Monitoring Service）的产品。该指标的呈现单位为：以2006年为基准年，指数值设为100，总密封地表面积以平方千米为计量单位。