基于NIR-SlopeSWIR1-NIR特征散点图的盐渍化土壤水盐动态分析

Dynamic Analysis of Salinized Soil Water and Salt Based on NIR-SlopeSWIR1-NIR Characteristic Curve

研究以Landsat8 OLI数据的近红外(NIR)值表征土壤盐分含量,以该数据短波红外(SWIR1)与近红外值之间的斜率(SlopeSWIR1-NIR)表征土壤水分含量。利用分段统计绘制NIR和相应Slope SWIR1-NIR的关系散点图,获取了玛纳斯河绿洲内部盐渍化土壤完整的水、盐年内动态变化规律。研究结果对今后基于地面试验的盐渍化土壤水盐动态分析具有一定参考价值。

The near infrared(NIR)value of Landsat8 OLI data was used to characterized the soil salt content,and the slope between short-wave infrared(SWIR1)and near infrared value(SlopeSWIR1-NIR)was used to characterize the soil moisture content.The scatter plot of the relationship between NIR and the corresponding SlopeSWIR1-NIR was plotted by segmentation statistics.This paper obtained the dynamic changes of salinized soil water and salt during the year in the Manas River oasis.The results have certain reference value for dynamic analysis of salinized soil water and salt based on ground test.