Objective/Meaning  The dynamic changes of landscape pattern and its driving force factors in Pingtan comprehensive experimental area in the past 20 years were analyzed in order to provide strategic basis for the reasonable utilization and protection of landscape environmental resources in the experimental area in the future from the perspective of landscape pattern.

  Methods/Procedures  By using the GlobeLand30, a global land cover product with 30 m resolution in 2000, 2010 and 2020, as the data sources, the land cover types were divided into seven categories, and the landscape pattern index was calculated to analyze the dynamic changes of landscape pattern. Then, combined with the principal component analysis, the driving force factors were discussed.

  Results/Conclusions  The results showed that: (1) the difference values of various landscape type indexes in Pingtan comprehensive experimental area were relatively small from 2000 to 2010, which was mainly reflected in the increase of construction land and the decrease of ecological land such as woodland and grassland. (2) From 2010 to 2020, on the level of landscape, the fractal dimension and the degree of spread continued to decline, the Shannon diversity index increased significantly, the trend of landscape fragmentation was serious, and the interference of human activities had a greater impact on the local landscape pattern. (3) The area of forest landscape types increased significantly from 2010 to 2020, the number of patches decreased significantly, the aggregation degree of patches increased, and the fragmentation degree of forest landscape types decreased. (4) The area of patch landscape type of of wetlands and waters showed the trend of downward from 2010 to 2020, the perimeter-area fractal dimension and the aggregation degree of patches decreased, the boundary shape of patches tended to be simple, and the degree of internal natural linkage decreased. The analysis of driving factors showed that both the socio-economic factors and policy factors directly affected the dynamic changes of landscape pattern in Pingtan comprehensive experimental area to a large extent.