JOINT EOEC-GIT4NDM 2019 CONFERENCEThe 6th International Conference on Earth Observation for Environmental Changes (EOEC 2019) and the 8th International Conference on Geo-information Technologies for Natural Disaster Management (GiT4NDM 2019) aim to advance research and development, as well as encourage innovative applications of Geomatics technologies in environmental change studies, geospatial information management toward implementation of sustainable development goals and 2030 smart environment and cities using artificial intelligence and deep learning; and to address the international co-operation in environmental change studies using advanced geospatial tools, spatiotemporal models and earth observation systems. The conference offers an interdisciplinary forum in the fields of remote sensing, surveying and mapping, geodesy and geosciences, geography, marine science, forestry, renewable energy, environment, transportation, natural hazards, disaster management and climate change science