基于光谱学与遥感技术的矿区废弃地土壤特性参数分析

Estimation of soil properties in mine wasteland based on spectroscopy and remote sensing

为了研究露天煤矿开采形成的废弃地对生态环境的影响,以阜新海州露天煤矿排土场作为研究对象,选取了36个采样点。首先测量了采样点土壤的反射光谱,然后在各点采集土壤样品并分析其特性参数。对36个采样点土壤样本的全氮、pH值、有机质和电导率等7个参数与光谱反射率进行相关性分析,得出:pH值与光谱反射率正相关,全氮、有机质、速效磷与反射率负相关;在600 nm红色波段之后pH值、有机质和全氮的相关系数较高;土样的速效氮、速效磷、速效钾及电导率与光谱反射率之间没有明显的相关性。在光谱分析基础上,利用SPOT5遥感影像相应波段灰度值建立了pH值、有机质、全氮等土壤参数的预测方程,获得了较高的精度。以上结果表明:可以用光谱反射率数据和遥感影像对废弃地土壤特征进行定量分析,为植被恢复提供决策数据。

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...