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土壤侵蚀是世界范围内最重要的土地退化问题,对全世界范围内的农作物产量,土壤结构和水质产生负面影响,因此,对侵蚀进行适当评估,了解其空间分布以及侵蚀程度,对政策的制定、治理措施的实施都具有非常重要的指导作用。以遥感在土壤侵蚀中的应用为主线,介绍国内外多种土壤侵蚀评价方法,包括定性的判断和定量的计算。认为虽然遥感因其具有大面积重复观测能力,已经渗透到各种研究方法中,但无论是定性的方法还是定量的方法,遥感往往仅作为数据进行输入,而遥感的潜力并没有得到充分的发挥,遥感多源多时相的能力并没有得到充分的应用。目的是使今后的研究更加重视遥感的空间分析和动态监测能力,以及多源多时相的特性,使遥感真正在方法论上发挥其在土壤侵蚀监测中的重要作用。
Soil erosion is the most important land degradation problem in the world and has a negative impact on crop yields, soil structure and water quality all over the world. Therefore, proper evaluation of erosion, understanding of its spatial distribution and erosion, and formulation of policies , The implementation of governance measures have a very important guiding role. Based on the application of remote sensing in soil erosion, a number of domestic and international soil erosion assessment methods are introduced, including qualitative judgment and quantitative calculation. It is considered that although remote sensing has penetrated into various research methods because of its large area repeated observation capability, remote sensing is often used as input only for data, but the potential of remote sensing has not been fully exerted, either qualitatively or quantitatively , The ability to remotely sense multiple sources and multiple phases has not been fully applied. The purpose is to make the future research pay more attention to the spatial analysis and dynamic monitoring ability of remote sensing and the characteristics of multi-source and multi-temporal so that remote sensing can play an important role in methodology in soil erosion monitoring.