南疆干旱区土壤盐渍化的高光谱响应与定量反演模型构建研究

项目名称： 南疆干旱区土壤盐渍化的高光谱响应与定量反演模型构建研究

项目编号： No.41261083

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 向红英

作者单位： 塔里木大学

项目金额： 48万元

中文摘要： 土壤盐渍化是南疆农业开发和可持续发展的主要障碍因素，也是生态环境恶化的根本原因之一。快速、准确的掌握该区土壤盐渍化信息而进行相应治理和规划势在必行。高光谱遥感技术是监测土壤盐渍化的一种新型手段，而进行相应的地面遥感试验是保证其监测精度的重要依据。因此，本项目以盐渍化面积广、盐渍化程度重的南疆土壤为研究对象，利用ASDFieldSpec-FRTM光谱仪野外实地、室内标准化处理后采集不同程度盐渍化土壤的光谱信息，室内采集人工配置的不同湿度与不同盐分含量土壤的光谱信息，结合土壤理化性质数据，采用神经网络分析、主成分分析、偏最小二乘法等统计分析方法，探讨土壤盐渍化的光谱特征表征；揭示土壤水分对盐渍化土壤光谱特征的影响规律；建立适宜于该区土壤盐渍化光谱评价的指标与标准；构建土壤盐分含量的高光谱定量反演模型。从而为高光谱遥感技术在此地区土壤盐渍化监测的应用提供高精度的地面数据与理论依据。

中文关键词： 土壤盐渍化；南疆；定量反演模型；电导率；高光谱

英文摘要： Soil salinization is the main obstacle factors of agricultural development and sustainable development, is the one of the root cause of the ecological environment deterioration in the southern of xinjiang too. It is imperative that Rapid and accurate grasp the soil salinization information and do corresponding management plan. Hyperspectral remote sensing is a new type of method for monitoring soil salinization, and carries on the corresponding ground remote sensing test is the important basis for guaranteeing its monitoring accuracy. Therefore, the research object of the project is the southern of Xinjiang, which salinization area is wide and salinization degree is heavy,use ASDFieldSpec-FRTM spectrometer to collect different degree of soil salinization spectrum information after field and indoor standardized treatment, indoor spectrum information of the different artificial configuration humidity and different soil salt content is collected, combined with the soil physical and chemical properties data, using neural network analysis and principal component analysis, the partial least squares method etc. statistical analysis method, to discusses the soil salinization spectral features representation; Reveals the law of soil moisture effecting soil salinization spectrum characteristics; Establish the soil saliniz

英文关键词： Soil salinization；Southern Xinjiang；Quantitative inversion model；Electrical conductivity；hyperspectral