基于LUCC的甘肃省农牧交错带生态系统服务价值评估及时空演变特征研究

This study aimed to clarify the impact of land-use changes on ecosystem service values，based on land use/ cover change（LUCC） for the agro-pastoral ecotone of Gansu Province in 2000，2010，and 2020. We used an equivalence factor to quantitatively assess the ecosystem service value of the agro-pastoral ecotone of Gansu Province，then used a spatial autocorrelation analysis method to study the temporal-spatial changes in ecological service values in each township unit. It was found that：1）From 2000 to 2020，the main land-use types in the agro-pastoral ecotone of Gansu Province were grassland，cultivated land，and woodland. During the period from 2000 to 2020，the areas of grassland，woodland，and construction land increased，while the areas of cultivated land and wetlands decreased. 2）From 2000 to 2020，the total value of ecosystem services in the agro-pastoral ecotone of Gansu Province increased by 11. 2358×108 yuan，and regulatory services dominated in all periods. Regulation of water flows and climate had large ecological service values. Grassland and woodland played significant roles in maintaining the value of hydrological and climatic regulation services，and were the key land-use types to maintain the total ecosystem service value（ESV）in the agro-pastoral ecotone of Gansu Province. 3）The ESV showed a strong positive spatial correlation，with an overall significant spatial pattern of agglomeration，and the spatial evolution of high- and low-value agglomerations remained stable. These results provide a scientific basis for formulating appropriate ecological protection policies，and for establishing a long-term strategy for ecological protection and restoration in the agro-pastoral ecotone of Gansu Province. © 2023 Editorial Office of Acta Prataculturae Sinica. All rights reserved.

Ecosystem service value evaluation and temporal-spatial evolution characteristics in an agro-pastoral ecotone of Gansu Province based on LUCC