Macro-monitoring and evaluation of mining ecosystem based on HJ satellite — Taking Shenfudongsheng mining as an example
With Shenfudongsheng Mining as the study area, calculating the net primary productivity of vegetation based on HJ data, combined with the landscape indices, the author constructed the macro-structure model of mining ecosystem, and dynamically evaluated the mining ecological structure. The results showed that: Shenfudongsheng mining vegetation productivity is very poor, by calculating the average NPP in 12 months. In August, the max NPP were about 44.785 gCm−2a−1. The spatial distribution of NPP was gradually descending from the northeast to southeast. The entire mining area index of the macro-structure was 35.1518, which is slant small, the overall evaluation was poor, and the ecological structure extremely fragile, consistent with the actual investigation, which should be paid more attention.