Spatiotemporal variations of eco-environment in the Guangxi Beibu Gulf Economic Zone based on remote sensing ecological index and granular computing

Accurate and rapid evaluation of the regional eco-environment is critical to policy formulation. The remote sensing ecological index (RSEI) model Guangxi Beibu Gulf Economic Zone (GBGEZ) during 2001–2020 was established evaluated using four indices: dryness, wetness, greenness, heat. This paper proposes an information granulation method for based on RSEI value that uses granular computing. We found that: (1) From 2001 2020, eco-environmental quality (EEQ) GBGEZ tended improve, spatial difference expand. distribution primarily in second-level third-level areas, EEQ east west better than middle. contribution dryness improvement study region increased year by year. (2) order (3) social economic activities had a certain inhibitory effect EEQ.