Assessment of devastated land in Northeast Asia by remote sensing environmental isotopes, measurement and infiltration capacity

我们在实地观测和遥感的基础上对东北亚地区的破坏土地进行了研究。森林砍伐、凋落物取样、人工种植和过度放牧等方式改变了土地，导致地表覆盖减少，土壤入渗能力下降。这反过来又造成了严重的土壤侵蚀，被认为是土地破坏的直接原因。相比之下，在中国，通过促进植树造林增加了入渗能力，减少了土壤侵蚀。通过详细的野外观测和遥感研究，明确了随着地表覆盖度的恢复，入渗能力增加，土壤流失量减少。此外，通过遥感分析NDVI，我们绘制了东亚地区灾情变化的地图。

We have conducted research on devastated land in Northeast Asia based on field observations and remote sensing. Land has been changed in various ways including deforestation, litter sampling, plantation, and overgrazing, which caused decrease in infiltration capacity of soil due to reduced land surface coverage. This, in turn, caused severe soil erosion and is considered to be the direct cause of land devastation. In contrast, in China, an increase in infiltration capacity and a decrease in soil erosion by promoting afforestation have been reported. This research based on detailed field observations and remote sensing clarified that the infiltration capacity increased and the amount of soil erosion decreased with the recovery of the land surface coverage. Moreover, we were able to draw a MAP on changes in devastation in the East Asia by analyzing NDVI with remote sensing.