土地沙化信息遥感监测技术研究进展

Research Advances in Remote Sensing Monitoring Technology for Desertification

遥感技术已被广泛应用于沙化信息监测研究中。文中回顾了国内外沙化信息遥感监测技术研究进展,从沙化光谱特征分析、沙化因子信息提取以及沙化信息动态分析3个方面进行了总结归纳,认为沙化光谱研究尚未形成体系化,虽然在沙化区域植被盖度、土壤含水量模型以及沙漠地形研究方面提出的模型和方法较多,但各具局限性,对格局—过程之间关系的新探索仍存在许多难以克服之处。指出了沙化信息遥感监测尚待解决的关键问题及其解决途径,并探讨了今后的主要研究方向。

Remote sensing technology has been widely used in desertification monitoring researches. The paper reviewed the research advances in remote sensing monitoring technologies for desertification information both at home and abroad. By summarizing desertification spectral signature analysis, desertification factor information extraction, desertification information dynamic analysis, it was concluded that the systematic desertification spectral study has not yet been conducted, and many models and methods on vegetation coverage in desertified areas, soil moisture content model and desert terrain researches have some limitations even though available in great number. The exploration for the new pattern-process relationship has faced many difficulties hard to be overcome. Finally, the key issues of remote sensing monitoring of desertification and their solutions, which remain to be solved, were identified, and the main research directions in this regard were discussed.