Ke, Bai, and Dhakir Abbas Ali. “Quantifying and Assessing Ecosystem Service Values in China’s Major Grain‑Producing Regions: A Spatial‑Temporal Analysis”. Research on World Agricultural Economy 6, no. 4 (August 28, 2025): 702–717. Accessed November 26, 2025. https://journals.nasspublishing.com/index.php/rwae/article/view/2351.