The 30 m annual maps for planted forests and natural forests in China

The annual maps for planted forests (PF) and natural forests (NF) with 30 m spatial resolution across China between 1990 and 2020 were produced. The resulting PF map in 2020 achieved an overall accuracy of 81% when validated against 3,574 visually interpreted reference data. PF maps for the years 1998, 2003, 2008, 2013, and 2018 were evaluated using data from the 5th, 6th, 7th, 8th, and 9th National Forest Inventory (NFI) data across 34 provinces and autonomous regions of China. The results demonstrated that all Pearson’s product-moment correlations were greater than 0.79.