基于多光谱遥感的盐渍化评价指数对宁夏银北灌区土壤盐度预测的适用性分析

吴霞, 王长军, 樊丽琴, 李磊

An applicability analysis of salinization evaluation index based on multispectral remote sensing to soil salinity prediction in Yinbei irrigation area of Ningxia

WU Xia, WANG Zhangjun, FAN Liqin, LI Lei

表3 研究区土壤EC的统计特征

Tab.3 Statistical characteristics of soil EC in the study area

统计特征 样本数 最小值/ (mS·cm-1) 最大值/ (mS·cm-1) 均值/ (mS·cm-1) 标准差/ (mS·cm-1) 变异系数 全样本 52 0.04 7.52 0.84 1.50 1.78 非盐渍化 20 0.04 0.27 0.19 0.08 0.40 轻度盐渍化 23 0.29 0.99 0.47 0.20 0.42 中重度盐渍化 9 1.08 7.52 3.24 2.51 0.77