关键词: 农业工程, 煤矿废弃地, 土壤养分, 遥感, 光谱分析

Abstract: To study the influence of the wasteland of opencast coalmineon on the development of eco-environment, soil samples were collected from 36 positions with typical surface features within the wasteland in Haizhou Opencast Coalmine in Fuxin City. The contents of total nitrogen (TN), available nitrogen, available phosphorous, available potassium, pH value, organic matter (SOM), and EC of the samples were measured; the correlation between the hyperspectral data and soil nutrient parameters was analyzed. Results show that the reflectance has positive correlation with pH, while it has negative correlation with TN, SOM and available phosphorous. High correlations were not observed between other soil nutrient parameters and hyperspectral reflectance. Within the band of 600 nm to 1000 nm, the absolute values of correlation coefficients between the spectral reflectance and pH value, SOM, TN are higher than that between spectral reflectance and phosphorous. Based on above results, estimation equations were established between soil parameters and gray information of SPOT5 satellite image, the equations' precision was satisfactory. The hyperspectral data and remote sensing images can be used for quantitative estimation of soil nutrients in mine wasteland. It can also provide fast, effective and surface information of large area for revegetation decision-making.