1. Yang, J., McBride, J., Zhou, J., & Sun, Z. (2005). The urban forest in Beijing and its role in air pollution reduction. Urban forestry & urban greening, 3(2), 65-78.

https://doi.org/10.1016/j.ufug.2004.09.001

2. Brack, C. L. (2002). Pollution mitigation and carbon sequestration by an urban forest. Environmental pollution, 116, S195-S200.

https://doi.org/10.1016/S0269-7491(01)00251-2

3. Livesley, S. J., McPherson, E. G., & Calfapietra, C. (2016). The urban forest and ecosystem services: impacts on urban water, heat, and pollution cycles at the tree, street, and city scale. Journal of environmental quality, 45(1), 119-124.

https://doi.org/10.2134/jeq2015.11.0567