一带一路沿线区域占地面积广阔,涉及60多个国家和40多亿人口,面临众多可持续发展问题。一带一路沿线国家面临全球变化的挑战,区域自然灾害具有高发性,全球85%的重大自然灾害发生在该地区,超过85%的自然灾害为地震、洪水和干旱、风暴潮,区内一些国家面临严峻和明显的粮食安全威胁,经济和区域发展严重不平衡。空间对地观测技术具有宏观、快速、准确、客观 The area along the Belt and Road covers a vast area covering more than 60 countries and a population of more than 4 billion. It faces many problems of sustainable development. Countries along the Belt and Road are facing the challenges of global change. The number of natural disasters in the region is high. About 85% of the world’s major natural disasters occur in the region. More than 85% of the natural disasters are earthquakes, floods and droughts and storm surges. Some countries in the region are facing Serious and obvious threats to food security, serious imbalances between economic and regional development. Space-to-Earth observation technology is macroscopic, rapid, accurate and objective