[1] Angelopoulou T, Balafoutis A, Zalidis G, et al. Sustainability, 2020, 12(2): 443.

[3] Wang C, Qiao X, Liang Z, et al. Fresenius Environmental Bulletin, 2021， 30(7): 7979.

[4] Angelopoulou T, Balafoutis A, Zalidis G, et al. Sustainability, 2020, 12 (2): 443.

[6] Odebiri O, Odindi J, Mutanga O. International Journal of Applied Earth Observation and Geoinformation, 2021， 102: 102389.

[7] Liu H Z, Shi T Z, Chen Y Y, et al. Remote Sensing, 2017， 9(1): 29.

[8] Zhao M S, Gao Y F, Lu Y Y, et al. Sustainability， 2022， 14(14): 8455.

[9] Guindo M L, Kabir M H, Chen R, et al. Sensors, 2021, 21(14): 4882.

[12] Liu J, Xie J, Meng T, et al. Agronomy Journal, 2022, 114(4): 1944.

[15] Liu J B, Dong Z Y, Xia J S, et al. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2021, 258: 119823.