Abstract: Since its establishment as Hainan Special Economic Zone, Hainan Island has undergone tremendous changes in both natural environment and urban development. In order to meet the demands of the Hainan International Tourism Island construction, the Maritime Silk Road construction, and the ASEAN strategy, we require long time-sequence, high-quality satellite remote sensing data sets that have great reference value for urban construction, environmental protection, agricultural planning, and eco-tourism. In order to learn the macroscopical changes of Hainan Island and understand the evolution of its natural resources since the establishment of the special economic zone, this study selected the Landsat series satellite remote sensing images with thin cloud from 1970 to 2017. Through the deep processing service system, we obtained five images which cover the entire island of Hainan in 1970, 1988, 1998, 2008 and 2018. Major steps included image registration, projection conversion, band fusion and image mosaicking. With less cloud influence, this product has a large time span and can be used for scientifically analyzing the temporal and spatial changes of Hainan Island over the past 30 years, as well as in industrial application monitoring and government macro decision.
Keywords: Landsat; Hainan Island; value-added products; band fusion; remote sensing service