基于OLI影像的乌裕尔河-双阳河流域土壤碱化反演研究

摘要

Soil salinization has been one of the soil degradation performances under the impact of climate change and human dis-turbance. Rapid inversion and timely monitoring for soil saliniza-tion will make a great contribution to ecological and sustainable development in WuYuer basin and ShuangYang basin, especially for changing the soil condition and preventing the soil salinization. Based on landsat-8 OLI image with PH and EC 170 measured soil samples, we made a correlation analysis between PH and EC of soil sample and spectral reflectance by choosing the best band from collecting spectra in the laboratory. At the same we made a soil salinity inversion model for WuYuer basin and ShuangYang basin by linear regression. we also provided a reference for infor-mation extraction and monitoring of regional soil salinization.%近年来受环境变化和人类活动的影响，土壤盐碱化是土地退化的表现之一。研究土壤盐碱化有利于改善现状，并且预防其加剧具有重要意义。土壤碱化的快速反演和及时监测，对乌—双河流域生态可持续发展有着重大意义。以 Landsat-8 OLI遥感影像与野外采样测定的170个样点土壤pH值和EC为数据基础，实验室内采集光谱，建立光谱反射率及其变换形式与土壤pH值和EC的相关分析，选择最佳敏感波段，利用线性回归分析建立基于OLI影像的乌裕尔河—双阳河流域土壤盐碱化反演模型，该模型的建立可为区域土壤碱化信息的提取及监测提供参考。