Study on Application of Remote Sensing for Worldwide Landfills Monitoring

对垃圾填埋场进行大面积监测的必要性很高，因为它可用于环境监测，如温室气体排放估计和废物稳定化评价。虽然填埋场的表层含有具有高温和/或高水分含量的点，但在稳定过程中产生的填埋气体通过浓度扩散和热对流以通量形式覆盖表面。在这项研究中，在日本，中国和印度尼西亚等几个国家的垃圾填埋场进行了现场调查，测量水分含量，表面温度，甲烷通量。观测是通过地面测量和低空遥感进行的，如可见光图像分析和热图像分析。低空遥感平台使用了一个气球。研究结果表明，垃圾填埋场的含水量和甲烷通量分布可以利用遥感技术进行估算。

The need for wide-area monitoring of landfill site is high since it can be used for environmental monitoring such as GHG emission estimation and the evaluation of waste stabilization. Whilst the surface layer of landfill site contain spots that have high temperature and/or high moisture content, landfill gas is generated during stabilization emit as a flux to cover surface by concentration diffusion and thermal convection. In this study, field survey for the measurement of moisture content, surface temperature, methane flux was conducted at landfill sites in several countries such as Japan, China and Indonesia. The observation was carried out with ground level measurement and low-altitude remote sensing such as visible image analysis, and thermal image analysis. A balloon was used for the low-altitude remote sensing platform. The result of this study showed that moisture content and methane flux distribution in a landfill can be estimated using remote sensing technique.