煤矿InSAR沉陷区NDVI变化的对比研究

Comparative Study of NDVI Changes of Coal Mine In SAR Subsidence

以神东矿区为例,采用2012年1-2月高分辨率雷达数据（RADARSAT-2精细波束模式,5 m）干涉测量获得开采沉陷区,采用2013年5月高分辨多光谱数据（SPOT 6,6 m）计算NDVI,通过多点采样,对比分析沉陷区内外植被指数的变化趋势。结果表明：开采沉陷1 a后,NDVI平均下降率为11.07%,地表植被仍受采动损害影响。

Shendong Mining as an example, using 1 to 2, 2012 high resolution radar data（RADARSAT- 2 fine beam pattern, 5 meters） interferometry to obtain mining subsidence area, using May 2013 high resolution multi-spectral data（SPOT 6,6 meters） to calculate NDVI, through multi-point sampling,analyze the change of the vegetation index of the inside and outside subsidence area. The results show that after a year trendency of mining subsidence, NDVI average decline rate was 11.07%, the surface vegetation is still affected by the mining damage.