Spatiotemporal Evolution and Simulation Prediction of Ecosystem Service Function in the Western Sichuan Plateau Based on Land Use Changes

Being closely related to ecosystem services, land use changes can affect service functions by acting on patterns and its processes, thus having impact regional sustainable development. Taking the Western Sichuan Plateau as study area based data from 1990 2020, CA-Markov model was employed predict pattern under natural change scenarios, improved InVEST equivalent method were used evaluate services in two different perspectives, analyze evolution trend. The results show that: 1) From carbon storage showed a fluctuating increase, with an average annual increase of 3.17 × 10 7 t, which total contribution rate woodland grassland exceeded 95%. In recent 30 years, has little spatial variation, decrease regions accounting for less than 5% overall sporadically dots-like distribution. 2) Ecosystem Service Value (ESV) increased 1.36 yuan past similar wave-like increase; ESV more 68%, occupying dominant position. generally stable significant accounted 9%, mainly located northeast southwest area. 3) next current ecological protection measures, will 5.3980 t 2.4087 9 compared that indicating positive development function. This provides scientific basis adjustment structure management decision environment Plateau.