Evaluating the impacts of large-scale opencast copper mining on vegetation productivity change in recent thirty years: a case study of Dexing Copper Mine DOI Creative Commons
Duan Huang, Zhiping Chen, Hengkai Li

et al.

Geocarto International, Journal Year: 2025, Volume and Issue: 40(1)

Published: Jan. 27, 2025

Understanding the impact of mining on surrounding vegetation gross primary productivity (GPP) is crucial for ecological management areas. Using simple non-iterative clustering (SNIC) and random forest (RF) methods, we mapped Dexing Copper Mine (DCM) at a 30 m spatial resolution with Landsat data from 1991 to 2022. The photosynthesis model (VPM) was selected simulate GPP. Sens slope test Hurst exponent method jointly used reveal spatial-temporal evolution Results showed: (1) SNIC+RF more effective than RF alone. mine area expanded 5.23 km2 24.97 due deforestation; (2) GPP in 53.17% areas has significantly increased. reduction are primarily around open pit tailings; (3) Vegetation loss land cover change −2×1010 gC, −2.7×1010 −2.79×1010 gC 1991-2000, 2000-2012, 2012-2022.

Language: Английский

Evaluating the impacts of large-scale opencast copper mining on vegetation productivity change in recent thirty years: a case study of Dexing Copper Mine DOI Creative Commons
Duan Huang, Zhiping Chen, Hengkai Li

et al.

Geocarto International, Journal Year: 2025, Volume and Issue: 40(1)

Published: Jan. 27, 2025

Understanding the impact of mining on surrounding vegetation gross primary productivity (GPP) is crucial for ecological management areas. Using simple non-iterative clustering (SNIC) and random forest (RF) methods, we mapped Dexing Copper Mine (DCM) at a 30 m spatial resolution with Landsat data from 1991 to 2022. The photosynthesis model (VPM) was selected simulate GPP. Sens slope test Hurst exponent method jointly used reveal spatial-temporal evolution Results showed: (1) SNIC+RF more effective than RF alone. mine area expanded 5.23 km2 24.97 due deforestation; (2) GPP in 53.17% areas has significantly increased. reduction are primarily around open pit tailings; (3) Vegetation loss land cover change −2×1010 gC, −2.7×1010 −2.79×1010 gC 1991-2000, 2000-2012, 2012-2022.

Language: Английский

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