Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41301363 |
| 基于主动微波遥感的土壤盐分定量反演研究 | |
| 吴月茹 | |
| 主持机构 | 中国科学院寒区旱区环境与工程研究所 |
| 开始日期 | 2014 |
| 结束日期 | 2016 |
| 资助经费 | 250000(CNY) |
| 项目类别 | 青年科学基金项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | As one main type of land degradation, soil salinization has being to be a critical scientific issue which plays an important impact on socio-economic, ecological environment and modern agriculture development. The strong correlation between radar backscattering coefficient and soil dielectric constant makes the active microwave remote sensing, especially the multi-dimensional synthetic aperture radar (SAR), to be a promising tool to quantitatively monitor soil salinity amount. However, till now, due to the lack of the knowledge of the dielectric properties of saline soil and the effect of salt on the soil backscattering coefficient, a universal algorithm and model for soil salinity retrieval had still not yet been developed. This project aims to revise the imaginary part of the dielectric constant in Dobson's model based on the understanding of the dielectric property of saline soil, via the measurement and analysis of dielectric properties of the soil samples with different moisture and salt content under the controlled experiment in laboratory. Then, with the help of the soil moisture inversion method and the AIEM model, by reducing the effect of soil roughness on SAR image and using multi-phase SAR images, we will finally develop a soil salt inversion algorithm for active microwave remote sensing data (SAR). And the accuracy of the proposed inversion algorithm will be evaluated by the synchronized experimental measurement results. |
| 中文关键词 | 主动微波遥感 ; 土壤盐分 ; 土壤含水量 ; 土壤粗糙度 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/346615 |
| 推荐引用方式 GB/T 7714 | 吴月茹.基于主动微波遥感的土壤盐分定量反演研究.2014. |
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