Huang, Shuqi, and Yujing Wen. “Research on Temporal and Spatial Evolution of Habitat Quality and Terrain Gradient Effect in Hilly Areas: A Case Study of Changsha-Zhuzhou-Xiangtan Urban Cluster”. International Journal of Natural Resources and Environmental Studies, vol. 4, no. 1, Nov. 2024, pp. 6-19, https://doi.org/10.62051/ijnres.v4n1.02.