利用黑河流域上游冰沟流域样地的实测积雪光谱和实测雪粒径数据,对不同雪粒径的光谱曲线特征进行分析,找出位于1030 nm和1250 nm附近对雪粒径较敏感的两个波长,定量地揭示了位于这两个波长附近处的光谱曲线特征与雪粒径的关系.1030 nm和1250 nm附近是雪反射光谱中两个较明显的吸收峰位置,但雪在这两处的反射率值依然较高.分别通过1030 nm和1250 nm附近吸收峰置差异、1030 nm附近处的光谱吸收深度、光谱吸收面积等4种方法与雪粒径进行关系拟合.结果表明:光谱吸收面积法对雪粒径有很好的指示作用,与雪粒径的线性和指数曲线拟合效果最好.同时,1030nm附近的波长受大气散射和衰减的影响很小,可将该方法直接运用到高光谱影像上. The characteristics of spectral curves of different snow particle diameters were analyzed by using the measured snowfall spectra and measured snow particle data of the Binggou watershed in the upper reaches of the Heihe River Basin. The spectral features of the snowfalls at 1030 nm and 1250 nm were found to be sensitive The relationship between the spectral curve characteristics and the snow particle size at two wavelengths is revealed quantitatively.The two obvious absorption peak positions in the snow reflectance spectrum near 1030 nm and 1250 nm, The reflectivity was still high.Four methods were used to fit the snow particle size through the difference of peak absorption at 1030 nm and 1250 nm, the absorption depth of the spectrum at 1030 nm, the area of ​​spectral absorption, respectively.The results showed that: Spectral absorption area method is a good indicator of snow particle size, and snow and particle diameter linear and exponential curve fitting the best effect.At the same time, the wavelength near 1030nm by the atmospheric scattering and attenuation of small, this method can be Directly applied to the hyperspectral image.